US StockDetailed Quotes

Provided by Tiger Fintech (Singapore) Pte. Ltd.

Otter Tail

80.64

-1.3300-1.62%

Post-market: 80.640.00000.00%16:10 EDT

Volume:209.33K

Turnover:17.05M

Market Cap:3.38B

PE:11.88

High:82.84

Open:81.68

Low:80.62

Close:81.97

52wk High:88.36

52wk Low:71.66

Shares:41.91M

Float Shares:40.94M

Volume Ratio:0.97

T/O Rate:0.51%

Dividend:2.04

Dividend Rate:2.53%

EPS(TTM):6.79

EPS(LYR):7.22

ROE:17.13%

ROA:6.27%

PB:1.90

PE(LYR):11.17

Loading ...

Overview Company News Filings

Major Issues Report

Current report, items 5.02, 5.07, and 9.01

Major Issues Report

Current report, items 5.03, 8.01, and 9.01

Major Issues Report

Current report, items 7.01 and 9.01

Major Issues Report

Current report, item 2.03

Beneficial Ownership Change

[Amend] General statement of acquisition of beneficial ownership

Annual Report

Annual report [Section 13 and 15(d), not S-K Item 405]

Major Issues Report

Current report, items 2.02 and 9.01

Beneficial Ownership Change

[Amend] Statement of acquisition of beneficial ownership by individuals

Beneficial Ownership Change

[Amend] Statement of acquisition of beneficial ownership by individuals

Major Issues Report

Current report, items 5.02 and 9.01

Statement Of Changes In Beneficial Ownership

Statement of changes in beneficial ownership of securities

Major Issues Report

Current report, items 1.01 and 9.01

Quarterly Report

Quarterly report [Sections 13 or 15(d)]

Major Issues Report

Current report, items 1.01, 2.02, and 9.01

Major Issues Report

Current report, item 2.03

Major Issues Report

Current report, items 1.01, 2.03, and 9.01

Quarterly Report

Quarterly report [Sections 13 or 15(d)]

Major Issues Report

Current report, items 2.02 and 9.01

Major Issues Report

Current report, items 1.01 and 9.01

Major Issues Report

Current report, item 1.01

{"basename":"","ssrTDKData":{"titleTemplate":"%s - Tiger Brokers","title":"Tiger Brokers | Global Stocks, Options & Futures Trading App","description":"Tiger Brokers, one-stop investment in US stocks, SGX stocks, HK stocks, A-shares & other global assets. One of the best stock trading platforms in Singapore.","keywords":"tiger brokers,tiger trade,tiger brokers singapore,broker online,stock trading in singapore,share trading singapore,brokerage firm singapore,trading app,stock broker singapore,stock trading platforms,trading account","social":{"ogDescription":"Tiger Brokers, one-stop investment in US stocks, SGX stocks, HK stocks, A-shares & other global assets. One of the best stock trading platforms in Singapore.","ogImage":"https://c1.itigergrowtha.com/portal5/static/media/og-logo.be62fbe1.png","ogUrl":"https://www.itiger.com/stock/OTTR/filings?page=5"},"companyName":"Tiger Brokers"},"pageData":{"isMobile":false,"isTiger":false,"isTTM":true,"region":"SGP","license":"TBSG","edition":"fundamental","symbol":"OTTR","isAnalysisPage":false},"__swrFallback__":{"@#url:\"https://hq.skytigris.cn/stock_info/detail/global\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"OTTR\",,,,,undefined,":{"symbol":"OTTR","market":"US","secType":"STK","nameCN":"Otter Tail","latestPrice":80.64,"timestamp":1759348800000,"preClose":81.97,"halted":0,"volume":209334,"hourTrading":{"tag":"盘后","latestPrice":80.64,"preClose":80.64,"latestTime":"16:10 EDT","volume":7630,"amount":615283.2,"timestamp":1759349404546},"delay":0,"floatShares":40941253,"shares":41905520,"eps":6.790249,"marketStatus":"Closed","change":-1.33,"latestTime":"10-01 16:00:00 EDT","open":81.68,"high":82.84,"low":80.62,"amount":17049900.04532,"amplitude":0.027083,"askPrice":0,"askSize":0,"bidPrice":0,"bidSize":0,"shortable":3,"etf":0,"ttmEps":6.790249,"tradingStatus":0,"nextMarketStatus":{"tag":"Pre-Mkt","tradingStatus":1,"beginTime":1759392000000},"marketStatusCode":5,"adr":0,"adrRate":0,"exchange":"NASDAQ","adjPreClose":81.97,"dividendRate":0.025329,"preHourTrading":{"tag":"盘前","latestPrice":82.07,"preClose":81.97,"latestTime":"09:28 EDT","volume":15,"amount":1230.7499249999998,"timestamp":1759325280040},"postHourTrading":{"tag":"盘后","latestPrice":80.64,"preClose":80.64,"latestTime":"16:10 EDT","volume":7630,"amount":615283.2,"timestamp":1759349404546},"volumeRatio":0.968061,"impliedVol":0.2003,"impliedVolPercentile":0.32},"@#url:\"https://hq.skytigris.cn/stock_info/fundamental/all\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"OTTR\",,,,,undefined,":{"symbol":"OTTR","floatShares":40941253,"roa":"6.27%","roe":"17.13%","lyrEps":7.220594,"volumeRatio":0.968061,"shares":41905520,"dividePrice":2.0425,"high":82.84,"amplitude":0.027083,"preClose":81.97,"low":80.62,"week52Low":71.66,"pbRate":"1.90","psRate":"2.58","week52High":88.355,"institutionHeld":0.6726,"latestPrice":80.64,"eps":6.790249,"divideRate":0.025329,"volume":209334,"delay":0,"ttmEps":6.790249,"open":81.68,"prevYearClose":73.84,"prevWeekClose":82.43,"prevMonthClose":81.97,"prevQuarterClose":81.97,"fiveDayClose":82.5,"twentyDayClose":83.74,"sixtyDayClose":78.92},"@#url:\"https://hq.skytigris.cn/fundamental/corporate_actions/details/OTTR\",params:#limit:5,,,undefined,":[{"date":"2025-08-15","symbol":"OTTR","amount":0.525,"announcedDate":null,"type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2025-08-15","defaultRemindTime":1755264600000,"name":"奥特泰尔","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2025-09-10","payableDate":"2025-08-15","currency":"USD","dateTimestamp":1755230400000,"payDate":"2025-09-10"},{"market":"US","date":"2025-08-04","symbol":"OTTR","fiscalQuarterEnding":"2025/06","expectedEps":null,"name":null,"time":"Post Market","type":"earning","dateTimestamp":1754280000000,"reportTimeType":"post","actualEps":1.85},{"date":"2025-05-15","symbol":"OTTR","amount":0.525,"announcedDate":null,"type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2025-05-15","defaultRemindTime":1747315800000,"name":"奥特泰尔","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2025-06-10","payableDate":"2025-05-15","currency":"USD","dateTimestamp":1747281600000,"payDate":"2025-06-10"},{"market":"US","date":"2025-05-05","symbol":"OTTR","fiscalQuarterEnding":"2025/03","expectedEps":null,"name":null,"time":"Post Market","type":"earning","dateTimestamp":1746417600000,"reportTimeType":"post","actualEps":1.62},{"market":"US","date":"2025-02-17","symbol":"OTTR","fiscalQuarterEnding":"2024/12","expectedEps":1.26,"name":null,"time":"Post Market","type":"earning","dateTimestamp":1739768400000,"reportTimeType":"post","actualEps":1.3}],"@#url:\"https://hq.skytigris.cn/fundamental/dividend/history\",params:#symbol:\"OTTR\",market:\"US\",,,undefined,":[{"executeDate":"2015-11-10","recordDate":"2015-11-13","paymentDate":"2015-12-10","value":0.3075,"currency":"USD"},{"executeDate":"2016-02-10","recordDate":"2016-02-12","paymentDate":"2016-03-10","value":0.3125,"currency":"USD"},{"executeDate":"2016-05-11","recordDate":"2016-05-13","paymentDate":"2016-06-10","value":0.3125,"currency":"USD"},{"executeDate":"2016-08-11","recordDate":"2016-08-15","paymentDate":"2016-09-10","value":0.3125,"currency":"USD"},{"executeDate":"2016-11-10","recordDate":"2016-11-15","paymentDate":"2016-12-10","value":0.3125,"currency":"USD"}],"@#url:\"https://hq.skytigris.cn/fundamental/estimate/recommendation\",params:#symbol:\"OTTR\",market:\"US\",delay:false,,,undefined,":{"strongBuy":0.3333,"buy":0,"hold":0.6667,"sell":0,"strongSell":0,"meanLabel":"BUY","meanPercent":0,"analysts":3,"updateTime":1746676800000},"@#url:\"https://hq.skytigris.cn/value_analysis/stock/OTTR\",params:#withQuantilePoint:true,period:\"5year\",factor:\"peRate\",delay:false,algorithm:1,,,undefined,":{"brief":{"id":"OTTR","date":"2025-09-30","current":11.875853,"percent":0.446241,"low":7.512945,"twenty":10.845655,"median":12.169413,"eighty":17.964864,"high":20.803279,"avg":13.567242,"sd":3.517722,"marketCap":3421166652},"quantilePoints":[{"date":"2020-10-02","current":17.537697,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1514309971},{"date":"2020-10-09","current":18.465467,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1594419216},{"date":"2020-10-16","current":18.380264,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1587062245},{"date":"2020-10-23","current":19.326968,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1668806373},{"date":"2020-10-30","current":18.153055,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1567443654},{"date":"2020-11-06","current":16.756541,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1634349229},{"date":"2020-11-13","current":17.228082,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1680340966},{"date":"2020-11-20","current":16.899687,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1648311007},{"date":"2020-11-27","current":17.152299,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1672949437},{"date":"2020-12-04","current":17.367018,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1693892103},{"date":"2020-12-11","current":18.263788,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1781358532},{"date":"2020-12-18","current":18.023807,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1757952023},{"date":"2020-12-24","current":17.762776,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1732492311},{"date":"2020-12-31","current":17.939603,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1749739213},{"date":"2021-01-08","current":17.964864,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1752203056},{"date":"2021-01-15","current":17.678572,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1724279501},{"date":"2021-01-22","current":17.514375,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1708264521},{"date":"2021-01-29","current":16.710229,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1629832184},{"date":"2021-02-05","current":17.623839,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1718941174},{"date":"2021-02-12","current":17.754355,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1731671030},{"date":"2021-02-19","current":18.124094,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1737212541},{"date":"2021-02-26","current":17.548107,"twenty":19.8672,"median":23.949681,"eighty":27.076324,"marketCap":1682003636},{"date":"2021-03-05","current":18.565828,"twenty":19.885738,"median":23.954884,"eighty":27.076329,"marketCap":1779553205},{"date":"2021-03-12","current":19.631187,"twenty":19.885738,"median":23.954884,"eighty":27.076329,"marketCap":1881668925},{"date":"2021-03-19","current":20.00796,"twenty":19.943603,"median":23.954884,"eighty":27.076329,"marketCap":1917783021},{"date":"2021-03-26","current":20.120559,"twenty":19.954275,"median":23.949681,"eighty":27.076324,"marketCap":1928575739},{"date":"2021-04-01","current":20.142213,"twenty":20.010342,"median":23.949681,"eighty":27.076324,"marketCap":1930651262},{"date":"2021-04-09","current":19.968984,"twenty":20.047938,"median":23.954884,"eighty":27.076329,"marketCap":1914047080},{"date":"2021-04-16","current":20.562294,"twenty":20.089646,"median":23.954884,"eighty":27.076329,"marketCap":1970916403},{"date":"2021-04-23","current":20.575286,"twenty":20.142213,"median":23.954884,"eighty":27.076329,"marketCap":1972161717},{"date":"2021-04-30","current":20.454025,"twenty":20.163867,"median":23.954884,"eighty":27.076329,"marketCap":1960538789},{"date":"2021-05-07","current":19.951421,"twenty":20.163867,"median":23.954884,"eighty":27.076329,"marketCap":2033289211},{"date":"2021-05-14","current":19.702792,"twenty":20.120559,"median":23.954884,"eighty":27.076329,"marketCap":2007950980},{"date":"2021-05-21","current":19.405253,"twenty":20.075744,"median":23.954884,"eighty":27.076329,"marketCap":1977628179},{"date":"2021-05-28","current":19.551985,"twenty":20.043702,"median":23.954884,"eighty":27.076329,"marketCap":1992581889},{"date":"2021-06-04","current":19.8536,"twenty":20.00363,"median":23.954884,"eighty":27.076329,"marketCap":2023320071},{"date":"2021-06-11","current":20.293795,"twenty":20.00363,"median":23.954884,"eighty":27.076329,"marketCap":2068181202},{"date":"2021-06-18","current":19.36857,"twenty":19.996961,"median":23.954884,"eighty":27.076329,"marketCap":1973889751},{"date":"2021-06-25","current":19.963649,"twenty":19.951421,"median":23.954884,"eighty":27.076329,"marketCap":2034535354},{"date":"2021-07-02","current":19.723172,"twenty":19.90251,"median":23.954884,"eighty":27.076329,"marketCap":2010027884},{"date":"2021-07-09","current":19.788386,"twenty":19.869377,"median":23.954884,"eighty":27.076329,"marketCap":2016673978},{"date":"2021-07-16","current":20.579106,"twenty":19.869377,"median":23.954884,"eighty":27.076329,"marketCap":2097257861},{"date":"2021-07-23","current":20.257112,"twenty":19.869377,"median":23.93822,"eighty":27.076329,"marketCap":2064442774},{"date":"2021-07-30","current":20.701382,"twenty":19.869377,"median":23.910958,"eighty":27.076329,"marketCap":2109719286},{"date":"2021-08-06","current":17.492312,"twenty":19.78337,"median":23.903763,"eighty":27.076329,"marketCap":2221523582},{"date":"2021-08-13","current":17.56427,"twenty":19.743551,"median":23.876215,"eighty":27.076329,"marketCap":2230662235},{"date":"2021-08-20","current":17.56754,"twenty":19.702792,"median":23.875249,"eighty":27.076329,"marketCap":2231077629},{"date":"2021-08-27","current":17.852101,"twenty":19.678337,"median":23.866836,"eighty":27.076329,"marketCap":2267216849},{"date":"2021-09-03","current":18.074517,"twenty":19.657259,"median":23.850681,"eighty":27.076324,"marketCap":2295463596},{"date":"2021-09-10","current":18.882407,"twenty":19.611327,"median":23.82333,"eighty":27.076324,"marketCap":2398065751},{"date":"2021-09-17","current":17.982934,"twenty":19.5528,"median":23.795978,"eighty":27.076324,"marketCap":2283832583},{"date":"2021-09-24","current":18.388515,"twenty":19.489434,"median":23.779313,"eighty":27.076324,"marketCap":2335341357},{"date":"2021-10-01","current":18.378702,"twenty":19.479937,"median":23.7456,"eighty":27.076324,"marketCap":2334095177},{"date":"2021-10-08","current":19.045948,"twenty":19.353897,"median":23.741274,"eighty":27.076319,"marketCap":2418835418},{"date":"2021-10-15","current":19.09174,"twenty":19.285652,"median":23.741274,"eighty":27.076319,"marketCap":2424650925},{"date":"2021-10-22","current":19.821131,"twenty":19.268386,"median":23.728794,"eighty":27.076319,"marketCap":2517283640},{"date":"2021-10-29","current":20.282316,"twenty":19.268386,"median":23.706911,"eighty":27.076319,"marketCap":2575854101},{"date":"2021-11-05","current":19.005221,"twenty":19.161154,"median":23.671195,"eighty":27.076319,"marketCap":2733330947},{"date":"2021-11-12","current":19.242065,"twenty":19.143175,"median":23.637827,"eighty":27.076319,"marketCap":2767393734},{"date":"2021-11-19","current":20.108564,"twenty":19.143175,"median":23.601275,"eighty":27.076319,"marketCap":2892013686},{"date":"2021-11-26","current":19.218958,"twenty":19.143175,"median":23.572558,"eighty":27.059134,"marketCap":2764070535},{"date":"2021-12-03","current":19.357598,"twenty":19.127555,"median":23.53913,"eighty":27.040655,"marketCap":2784009727},{"date":"2021-12-10","current":19.441359,"twenty":19.123702,"median":23.475472,"eighty":27.004132,"marketCap":2796056323},{"date":"2021-12-17","current":19.38937,"twenty":19.123702,"median":23.438815,"eighty":26.949956,"marketCap":2788579125},{"date":"2021-12-23","current":19.891939,"twenty":19.123702,"median":23.395195,"eighty":26.925495,"marketCap":2860858698},{"date":"2021-12-31","current":20.628464,"twenty":19.123702,"median":23.361958,"eighty":26.890436,"marketCap":2966785657},{"date":"2022-01-07","current":19.579999,"twenty":19.123722,"median":23.315105,"eighty":26.860379,"marketCap":2815995515},{"date":"2022-01-14","current":18.566195,"twenty":19.06693,"median":23.272599,"eighty":26.828498,"marketCap":2670190171},{"date":"2022-01-21","current":18.190712,"twenty":19.003488,"median":23.24699,"eighty":26.801475,"marketCap":2616188192},{"date":"2022-01-28","current":18.138722,"twenty":18.91514,"median":23.198043,"eighty":26.719646,"marketCap":2608710995},{"date":"2022-02-04","current":17.520619,"twenty":18.884809,"median":23.159239,"eighty":26.679224,"marketCap":2519815429},{"date":"2022-02-11","current":17.439746,"twenty":18.835282,"median":23.070546,"eighty":26.543172,"marketCap":2508184233},{"date":"2022-02-18","current":14.220926,"twenty":18.762285,"median":23.031172,"eighty":26.486371,"marketCap":2513818931},{"date":"2022-02-25","current":14.785809,"twenty":18.728679,"median":22.965142,"eighty":26.432751,"marketCap":2613672712},{"date":"2022-03-04","current":14.861127,"twenty":18.687446,"median":22.917471,"eighty":26.405147,"marketCap":2626986549},{"date":"2022-03-11","current":14.672833,"twenty":18.660836,"median":22.866671,"eighty":26.355772,"marketCap":2593701956},{"date":"2022-03-18","current":14.380977,"twenty":18.625817,"median":22.824522,"eighty":26.355772,"marketCap":2542110836},{"date":"2022-03-25","current":14.750504,"twenty":18.583734,"median":22.792102,"eighty":26.316858,"marketCap":2607431851},{"date":"2022-04-01","current":15.138861,"twenty":18.563192,"median":22.71221,"eighty":26.170247,"marketCap":2676081325},{"date":"2022-04-08","current":14.92703,"twenty":18.524099,"median":22.690715,"eighty":25.975683,"marketCap":2638636157},{"date":"2022-04-14","current":14.717553,"twenty":18.494273,"median":22.673901,"eighty":25.940209,"marketCap":2601607047},{"date":"2022-04-22","current":14.691662,"twenty":18.473157,"median":22.618682,"eighty":25.799493,"marketCap":2597030415},{"date":"2022-04-29","current":13.641921,"twenty":18.424,"median":22.525868,"eighty":25.726882,"marketCap":2411468806},{"date":"2022-05-06","current":11.876885,"twenty":18.386677,"median":22.448621,"eighty":25.671117,"marketCap":2594422419},{"date":"2022-05-13","current":11.922624,"twenty":18.36896,"median":22.383651,"eighty":25.561014,"marketCap":2604413776},{"date":"2022-05-20","current":12.056029,"twenty":18.318267,"median":22.302944,"eighty":25.495786,"marketCap":2633555235},{"date":"2022-05-27","current":12.458151,"twenty":18.304527,"median":22.291634,"eighty":25.464886,"marketCap":2721395917},{"date":"2022-06-03","current":12.700187,"twenty":18.263778,"median":22.209912,"eighty":25.429207,"marketCap":2774266849},{"date":"2022-06-10","current":12.789759,"twenty":18.218362,"median":22.19033,"eighty":25.332936,"marketCap":2793833257},{"date":"2022-06-17","current":11.773972,"twenty":18.194667,"median":22.173571,"eighty":25.298064,"marketCap":2571941865},{"date":"2022-06-24","current":12.387637,"twenty":18.164763,"median":22.142435,"eighty":25.262944,"marketCap":2705992575},{"date":"2022-07-01","current":13.237619,"twenty":18.14584,"median":22.081888,"eighty":25.222297,"marketCap":2891665296},{"date":"2022-07-08","current":12.669694,"twenty":18.138052,"median":22.068136,"eighty":25.188213,"marketCap":2767605944},{"date":"2022-07-15","current":12.75736,"twenty":18.115165,"median":22.0053,"eighty":25.153063,"marketCap":2786756045},{"date":"2022-07-22","current":12.547723,"twenty":18.095284,"median":21.926937,"eighty":25.080083,"marketCap":2740962325},{"date":"2022-07-29","current":13.391988,"twenty":18.072758,"median":21.881359,"eighty":24.997663,"marketCap":2925386126},{"date":"2022-08-05","current":12.020528,"twenty":18.024795,"median":21.848096,"eighty":24.931096,"marketCap":3153116716},{"date":"2022-08-12","current":12.923575,"twenty":18.007774,"median":21.806839,"eighty":24.856583,"marketCap":3389995962},{"date":"2022-08-19","current":12.853744,"twenty":17.972443,"median":21.770166,"eighty":24.761398,"marketCap":3371678411},{"date":"2022-08-26","current":12.330008,"twenty":17.937887,"median":21.716282,"eighty":24.67654,"marketCap":3234296774},{"date":"2022-09-02","current":12.004657,"twenty":17.919209,"median":21.660146,"eighty":24.628946,"marketCap":3148953636},{"date":"2022-09-09","current":11.947522,"twenty":17.885505,"median":21.419688,"eighty":24.61404,"marketCap":3133966548},{"date":"2022-09-16","current":11.077804,"twenty":17.846684,"median":21.099922,"eighty":24.575001,"marketCap":2905829770},{"date":"2022-09-23","current":10.339812,"twenty":17.811159,"median":20.758698,"eighty":24.542718,"marketCap":2712246554},{"date":"2022-09-30","current":9.763703,"twenty":17.762776,"median":20.628464,"eighty":24.482433,"marketCap":2561126754},{"date":"2022-10-07","current":9.800206,"twenty":17.690361,"median":20.566978,"eighty":24.431611,"marketCap":2570701838},{"date":"2022-10-14","current":10.089054,"twenty":17.652495,"median":20.509816,"eighty":24.398208,"marketCap":2646469892},{"date":"2022-10-21","current":10.258872,"twenty":17.619636,"median":20.453633,"eighty":24.369034,"marketCap":2691014847},{"date":"2022-10-28","current":10.903225,"twenty":17.583269,"median":20.428041,"eighty":24.346678,"marketCap":2860035891},{"date":"2022-11-04","current":7.898369,"twenty":17.564646,"median":20.367704,"eighty":24.325611,"marketCap":2320509264},{"date":"2022-11-11","current":7.768005,"twenty":17.539057,"median":20.296334,"eighty":24.291597,"marketCap":2282208788},{"date":"2022-11-18","current":7.93096,"twenty":17.504087,"median":20.257112,"eighty":24.271457,"marketCap":2330084383},{"date":"2022-11-25","current":8.225697,"twenty":17.464694,"median":20.224834,"eighty":24.251441,"marketCap":2416676763},{"date":"2022-12-02","current":8.341891,"twenty":17.434003,"median":20.159536,"eighty":24.234801,"marketCap":2450814144},{"date":"2022-12-09","current":8.391486,"twenty":17.402692,"median":20.131355,"eighty":24.220782,"marketCap":2465384977},{"date":"2022-12-16","current":8.186021,"twenty":17.369582,"median":20.108564,"eighty":24.196221,"marketCap":2405020097},{"date":"2022-12-23","current":8.25262,"twenty":17.326187,"median":20.077252,"eighty":24.162809,"marketCap":2424586644},{"date":"2022-12-30","current":8.319219,"twenty":17.294785,"median":20.06426,"eighty":24.145588,"marketCap":2444153191},{"date":"2023-01-06","current":8.524684,"twenty":17.209917,"median":20.057206,"eighty":24.141281,"marketCap":2504518072},{"date":"2023-01-13","current":8.925696,"twenty":17.131693,"median":20.016622,"eighty":24.141281,"marketCap":2622333666},{"date":"2023-01-20","current":8.745736,"twenty":17.073812,"median":19.996961,"eighty":24.141281,"marketCap":2569462357},{"date":"2023-01-27","current":8.881769,"twenty":16.938997,"median":19.961259,"eighty":24.141281,"marketCap":2609428071},{"date":"2023-02-03","current":9.3678,"twenty":16.832769,"median":19.929488,"eighty":24.141281,"marketCap":2752222236},{"date":"2023-02-10","current":9.07023,"twenty":16.703249,"median":19.90251,"eighty":24.141281,"marketCap":2664797237},{"date":"2023-02-17","current":10.433431,"twenty":15.099319,"median":19.890283,"eighty":24.141281,"marketCap":2965014160},{"date":"2023-02-24","current":10.390947,"twenty":14.92703,"median":19.869377,"eighty":24.141281,"marketCap":2952940949},{"date":"2023-03-03","current":10.663743,"twenty":14.841356,"median":19.796538,"eighty":24.141281,"marketCap":3030465040},{"date":"2023-03-10","current":10.119554,"twenty":14.798049,"median":19.771936,"eighty":24.141281,"marketCap":2875815448},{"date":"2023-03-17","current":10.254501,"twenty":14.744855,"median":19.743551,"eighty":24.141281,"marketCap":2914165212},{"date":"2023-03-24","current":10.30584,"twenty":14.698723,"median":19.702792,"eighty":24.141281,"marketCap":2928754796},{"date":"2023-03-31","current":10.60067,"twenty":14.606459,"median":19.688122,"eighty":24.139845,"marketCap":3012540694},{"date":"2023-04-06","current":10.333709,"twenty":14.540085,"median":19.677793,"eighty":24.142716,"marketCap":2936674856},{"date":"2023-04-14","current":10.913101,"twenty":14.44688,"median":19.644179,"eighty":24.145588,"marketCap":3101328734},{"date":"2023-04-21","current":10.823625,"twenty":14.383801,"median":19.608635,"eighty":24.145588,"marketCap":3075901173},{"date":"2023-04-28","current":10.530263,"twenty":14.246346,"median":19.562669,"eighty":24.124576,"marketCap":2992532121},{"date":"2023-05-05","current":11.723718,"twenty":14.050049,"median":19.520806,"eighty":24.121014,"marketCap":3220059941},{"date":"2023-05-12","current":11.805724,"twenty":13.243718,"median":19.486771,"eighty":24.121014,"marketCap":3242583676},{"date":"2023-05-19","current":11.503519,"twenty":12.950556,"median":19.477696,"eighty":24.121014,"marketCap":3159579540},{"date":"2023-05-26","current":11.380511,"twenty":12.89877,"median":19.44858,"eighty":24.121777,"marketCap":3125793937},{"date":"2023-06-01","current":11.269652,"twenty":12.872851,"median":19.419905,"eighty":24.121777,"marketCap":3095345184},{"date":"2023-06-09","current":11.691827,"twenty":12.792426,"median":19.363084,"eighty":24.123302,"marketCap":3211300710},{"date":"2023-06-16","current":11.456442,"twenty":12.722294,"median":19.332604,"eighty":24.123302,"marketCap":3146649248},{"date":"2023-06-23","current":11.423032,"twenty":12.670075,"median":19.284718,"eighty":24.116133,"marketCap":3137472911},{"date":"2023-06-30","current":11.82091,"twenty":12.650636,"median":19.25037,"eighty":24.095201,"marketCap":3246754738},{"date":"2023-07-07","current":11.782944,"twenty":12.591556,"median":19.192963,"eighty":24.063488,"marketCap":3236327083},{"date":"2023-07-14","current":12.317497,"twenty":12.516253,"median":19.153885,"eighty":24.046917,"marketCap":3383148469},{"date":"2023-07-21","current":12.820159,"twenty":12.48407,"median":19.123643,"eighty":24.020719,"marketCap":3521210624},{"date":"2023-07-28","current":12.429875,"twenty":12.47111,"median":19.049219,"eighty":23.982086,"marketCap":3414014328},{"date":"2023-08-04","current":13.770786,"twenty":12.461201,"median":18.957636,"eighty":23.947467,"marketCap":3727669261},{"date":"2023-08-11","current":14.119024,"twenty":12.461201,"median":18.90413,"eighty":23.947467,"marketCap":3821935039},{"date":"2023-08-18","current":12.974155,"twenty":12.461201,"median":18.881971,"eighty":23.930534,"marketCap":3512025868},{"date":"2023-08-25","current":12.656735,"twenty":12.461201,"median":18.826804,"eighty":23.91504,"marketCap":3426102194},{"date":"2023-09-01","current":12.692175,"twenty":12.461201,"median":18.756711,"eighty":23.91504,"marketCap":3435695614},{"date":"2023-09-08","current":11.633595,"twenty":12.435014,"median":18.713811,"eighty":23.876215,"marketCap":3149144335},{"date":"2023-09-15","current":11.826204,"twenty":12.362977,"median":18.679617,"eighty":23.865326,"marketCap":3201282486},{"date":"2023-09-22","current":11.88938,"twenty":12.2819,"median":18.632627,"eighty":23.798417,"marketCap":3218383800},{"date":"2023-09-29","current":12.008027,"twenty":12.225341,"median":18.621673,"eighty":23.798417,"marketCap":3250500901},{"date":"2023-10-06","current":11.422495,"twenty":12.153177,"median":18.573388,"eighty":23.798417,"marketCap":3092000921},{"date":"2023-10-13","current":11.690607,"twenty":12.121274,"median":18.543088,"eighty":23.798417,"marketCap":3164577228},{"date":"2023-10-20","current":11.032654,"twenty":12.068227,"median":18.500968,"eighty":23.798417,"marketCap":2986473303},{"date":"2023-10-27","current":10.963315,"twenty":12.040021,"median":18.49148,"eighty":23.847151,"marketCap":2967703569},{"date":"2023-11-03","current":12.170294,"twenty":12.006789,"median":18.46809,"eighty":23.847151,"marketCap":3388562726},{"date":"2023-11-10","current":11.388303,"twenty":12.002118,"median":18.401901,"eighty":23.847151,"marketCap":3170833806},{"date":"2023-11-17","current":11.741847,"twenty":11.981732,"median":18.383293,"eighty":23.847151,"marketCap":3269270635},{"date":"2023-11-24","current":11.482681,"twenty":11.952075,"median":18.366481,"eighty":23.847151,"marketCap":3197111434},{"date":"2023-12-01","current":11.431747,"twenty":11.926817,"median":18.315925,"eighty":23.847151,"marketCap":3182929857},{"date":"2023-12-08","current":11.446728,"twenty":11.913883,"median":18.304527,"eighty":23.830906,"marketCap":3187100909},{"date":"2023-12-15","current":11.738851,"twenty":11.884271,"median":18.263736,"eighty":23.830906,"marketCap":3268436425},{"date":"2023-12-22","current":12.899852,"twenty":11.878477,"median":18.218081,"eighty":23.830906,"marketCap":3591692963},{"date":"2023-12-29","current":12.826447,"twenty":11.877681,"median":18.19593,"eighty":23.847151,"marketCap":3571254808},{"date":"2024-01-05","current":12.687127,"twenty":11.876885,"median":18.182453,"eighty":23.863396,"marketCap":3532464023},{"date":"2024-01-12","current":12.360548,"twenty":11.876885,"median":18.146581,"eighty":23.863396,"marketCap":3441535087},{"date":"2024-01-19","current":12.621212,"twenty":11.876123,"median":18.139839,"eighty":23.865326,"marketCap":3514111394},{"date":"2024-01-26","current":13.256392,"twenty":11.876885,"median":18.121392,"eighty":23.863396,"marketCap":3690964003},{"date":"2024-02-02","current":14.07134,"twenty":11.876885,"median":18.105719,"eighty":23.863396,"marketCap":3917869237},{"date":"2024-02-09","current":14.309533,"twenty":11.876885,"median":18.077318,"eighty":23.863396,"marketCap":3984188965},{"date":"2024-02-16","current":12.849559,"twenty":11.876885,"median":18.026077,"eighty":23.863396,"marketCap":3780224518},{"date":"2024-02-23","current":12.244156,"twenty":11.876885,"median":18.011635,"eighty":23.728302,"marketCap":3602120593},{"date":"2024-03-01","current":12.845867,"twenty":11.877681,"median":17.989475,"eighty":23.575839,"marketCap":3779138374},{"date":"2024-03-08","current":12.118796,"twenty":11.877681,"median":17.957864,"eighty":23.226514,"marketCap":3565240646},{"date":"2024-03-15","current":11.560712,"twenty":11.832368,"median":17.933248,"eighty":21.916484,"marketCap":3401057429},{"date":"2024-03-22","current":11.540831,"twenty":11.804509,"median":17.910493,"eighty":21.374271,"marketCap":3395208663},{"date":"2024-03-28","current":12.091815,"twenty":11.787042,"median":17.874378,"eighty":20.984065,"marketCap":3557303035},{"date":"2024-04-05","current":12.111695,"twenty":11.785982,"median":17.82245,"eighty":20.701382,"marketCap":3563151801},{"date":"2024-04-12","current":11.776561,"twenty":11.782944,"median":17.792247,"eighty":20.579106,"marketCap":3464558317},{"date":"2024-04-19","current":11.685677,"twenty":11.776561,"median":17.737514,"eighty":20.553732,"marketCap":3437821101},{"date":"2024-04-26","current":12.151457,"twenty":11.776927,"median":17.679194,"eighty":20.486482,"marketCap":3574849333},{"date":"2024-05-03","current":12.361626,"twenty":11.776927,"median":17.642785,"eighty":20.432542,"marketCap":3636679145},{"date":"2024-05-10","current":12.540994,"twenty":11.776927,"median":17.601857,"eighty":20.398794,"marketCap":3838146070},{"date":"2024-05-17","current":12.599743,"twenty":11.776927,"median":17.574169,"eighty":20.351873,"marketCap":3856126273},{"date":"2024-05-24","current":12.312827,"twenty":11.776927,"median":17.556292,"eighty":20.291499,"marketCap":3768315981},{"date":"2024-05-31","current":12.360646,"twenty":11.776927,"median":17.53533,"eighty":20.256481,"marketCap":3782951029},{"date":"2024-06-07","current":12.053235,"twenty":11.776927,"median":17.48187,"eighty":20.201469,"marketCap":3688868573},{"date":"2024-06-14","current":11.786813,"twenty":11.776927,"median":17.453646,"eighty":20.149509,"marketCap":3607330444},{"date":"2024-06-21","current":11.78408,"twenty":11.776561,"median":17.430166,"eighty":20.120559,"marketCap":3606494156},{"date":"2024-06-28","current":11.96716,"twenty":11.773972,"median":17.400425,"eighty":20.094281,"marketCap":3662525485},{"date":"2024-07-05","current":11.722598,"twenty":11.770881,"median":17.367018,"eighty":20.076254,"marketCap":3587677665},{"date":"2024-07-12","current":11.998585,"twenty":11.741847,"median":17.309146,"eighty":20.06147,"marketCap":3672142803},{"date":"2024-07-19","current":12.672156,"twenty":11.741847,"median":17.291235,"eighty":20.043702,"marketCap":3878287918},{"date":"2024-07-26","current":13.726916,"twenty":11.741847,"median":17.173216,"eighty":20.00363,"marketCap":4201095279},{"date":"2024-08-02","current":12.826544,"twenty":11.741847,"median":17.106946,"eighty":19.963649,"marketCap":3925538219},{"date":"2024-08-09","current":12.179665,"twenty":11.741847,"median":17.009152,"eighty":19.931042,"marketCap":3788777250},{"date":"2024-08-16","current":11.947044,"twenty":11.741847,"median":16.899687,"eighty":19.912684,"marketCap":3716414867},{"date":"2024-08-23","current":12.221349,"twenty":11.738374,"median":16.72996,"eighty":19.890283,"marketCap":3801743920},{"date":"2024-08-30","current":11.368853,"twenty":11.735867,"median":15.145922,"eighty":19.869377,"marketCap":3536554609},{"date":"2024-09-06","current":10.427612,"twenty":11.712179,"median":14.938798,"eighty":19.821131,"marketCap":3243758840},{"date":"2024-09-13","current":10.594346,"twenty":11.698312,"median":14.851712,"eighty":19.77861,"marketCap":3295625519},{"date":"2024-09-20","current":10.664267,"twenty":11.675123,"median":14.809346,"eighty":19.744634,"marketCap":3317376062},{"date":"2024-09-27","current":10.502911,"twenty":11.655856,"median":14.752858,"eighty":19.70481,"marketCap":3267182502},{"date":"2024-10-04","current":10.45316,"twenty":11.630295,"median":14.710492,"eighty":19.689756,"marketCap":3251706154},{"date":"2024-10-11","current":10.336177,"twenty":11.597413,"median":14.672833,"eighty":19.662034,"marketCap":3215315823},{"date":"2024-10-18","current":10.563419,"twenty":11.567301,"median":14.526905,"eighty":19.626856,"marketCap":3286005087},{"date":"2024-10-25","current":10.602414,"twenty":11.550094,"median":14.397452,"eighty":19.584725,"marketCap":3298135197},{"date":"2024-11-01","current":10.500222,"twenty":11.531708,"median":14.29389,"eighty":19.528897,"marketCap":3266345943},{"date":"2024-11-08","current":10.857344,"twenty":11.50391,"median":14.20317,"eighty":19.487908,"marketCap":3306919071},{"date":"2024-11-15","current":11.03862,"twenty":11.482681,"median":14.1028,"eighty":19.479612,"marketCap":3362131987},{"date":"2024-11-22","current":11.093553,"twenty":11.467181,"median":14.014244,"eighty":19.450024,"marketCap":3378863174},{"date":"2024-11-29","current":11.074326,"twenty":11.44869,"median":13.914043,"eighty":19.418253,"marketCap":3373007258},{"date":"2024-12-06","current":10.667828,"twenty":11.422495,"median":13.726916,"eighty":19.357598,"marketCap":3249196476},{"date":"2024-12-13","current":10.420634,"twenty":11.390367,"median":13.576636,"eighty":19.326968,"marketCap":3173906135},{"date":"2024-12-20","current":10.323129,"twenty":11.368853,"median":13.268112,"eighty":19.278233,"marketCap":3144208279},{"date":"2024-12-27","current":10.266823,"twenty":11.311552,"median":13.237619,"eighty":19.242065,"marketCap":3127058812},{"date":"2025-01-03","current":10.100654,"twenty":11.269652,"median":13.151717,"eighty":19.185156,"marketCap":3076446972},{"date":"2025-01-10","current":10.010016,"twenty":11.220214,"median":13.076891,"eighty":19.146295,"marketCap":3048840514},{"date":"2025-01-17","current":10.908157,"twenty":11.179571,"median":12.951154,"eighty":19.109779,"marketCap":3322395418},{"date":"2025-01-24","current":10.654095,"twenty":11.104539,"median":12.923575,"eighty":19.053647,"marketCap":3245013679},{"date":"2025-01-31","current":10.579937,"twenty":11.060594,"median":12.894891,"eighty":18.96542,"marketCap":3222426577},{"date":"2025-02-07","current":10.667828,"twenty":11.016922,"median":12.875156,"eighty":18.904708,"marketCap":3249196476},{"date":"2025-02-14","current":10.57307,"twenty":10.995499,"median":12.851651,"eighty":18.882058,"marketCap":3220335179},{"date":"2025-02-21","current":11.290961,"twenty":10.995499,"median":12.843699,"eighty":18.831282,"marketCap":3406053958},{"date":"2025-02-28","current":11.055242,"twenty":10.995499,"median":12.822425,"eighty":18.758105,"marketCap":3334946360},{"date":"2025-03-07","current":11.269083,"twenty":10.980392,"median":12.788268,"eighty":18.70681,"marketCap":3399454122},{"date":"2025-03-14","current":11.573053,"twenty":10.980392,"median":12.755454,"eighty":18.681953,"marketCap":3491150199},{"date":"2025-03-21","current":11.224667,"twenty":10.980392,"median":12.735102,"eighty":18.668836,"marketCap":3386055608},{"date":"2025-03-28","current":11.205236,"twenty":10.980392,"median":12.695036,"eighty":18.629421,"marketCap":3380193759},{"date":"2025-04-04","current":10.655592,"twenty":10.972152,"median":12.686521,"eighty":18.615993,"marketCap":3214387153},{"date":"2025-04-11","current":10.917922,"twenty":10.938094,"median":12.670647,"eighty":18.574355,"marketCap":3293522124},{"date":"2025-04-17","current":10.959561,"twenty":10.936273,"median":12.656544,"eighty":18.557351,"marketCap":3306083230},{"date":"2025-04-25","current":10.811047,"twenty":10.921437,"median":12.633484,"eighty":18.504119,"marketCap":3261281950},{"date":"2025-05-02","current":11.245487,"twenty":10.915994,"median":12.608709,"eighty":18.480872,"marketCap":3392336162},{"date":"2025-05-09","current":10.916416,"twenty":10.901886,"median":12.579249,"eighty":18.457174,"marketCap":3224960315},{"date":"2025-05-16","current":11.333441,"twenty":10.901886,"median":12.563309,"eighty":18.400532,"marketCap":3348159163},{"date":"2025-05-23","current":10.873862,"twenty":10.883781,"median":12.547723,"eighty":18.382969,"marketCap":3212389004},{"date":"2025-05-30","current":10.988757,"twenty":10.873862,"median":12.513351,"eighty":18.361737,"marketCap":3246331543},{"date":"2025-06-06","current":10.836982,"twenty":10.869398,"median":12.473397,"eighty":18.310818,"marketCap":3201493868},{"date":"2025-06-13","current":11.252589,"twenty":10.869398,"median":12.436299,"eighty":18.301687,"marketCap":3324273672},{"date":"2025-06-20","current":10.825635,"twenty":10.85652,"median":12.41818,"eighty":18.254191,"marketCap":3198141518},{"date":"2025-06-27","current":11.156134,"twenty":10.856319,"median":12.397618,"eighty":18.226801,"marketCap":3295778700},{"date":"2025-07-03","current":11.303654,"twenty":10.856319,"median":12.368315,"eighty":18.195985,"marketCap":3339359245},{"date":"2025-07-11","current":11.385924,"twenty":10.856319,"median":12.355305,"eighty":18.188115,"marketCap":3363663779},{"date":"2025-07-18","current":10.859678,"twenty":10.849466,"median":12.314452,"eighty":18.146822,"marketCap":3208198567},{"date":"2025-07-25","current":11.052587,"twenty":10.849466,"median":12.282669,"eighty":18.132871,"marketCap":3265188510},{"date":"2025-08-01","current":10.947622,"twenty":10.849466,"median":12.267192,"eighty":18.106837,"marketCap":3234179276},{"date":"2025-08-08","current":11.664179,"twenty":10.845655,"median":12.226371,"eighty":18.095284,"marketCap":3337774668},{"date":"2025-08-15","current":12.022964,"twenty":10.845655,"median":12.212764,"eighty":18.072758,"marketCap":3440443192},{"date":"2025-08-22","current":12.167942,"twenty":10.845655,"median":12.195498,"eighty":18.020439,"marketCap":3481929656},{"date":"2025-08-29","current":12.323172,"twenty":10.845655,"median":12.195498,"eighty":18.002196,"marketCap":3526349508},{"date":"2025-09-05","current":12.364176,"twenty":10.845162,"median":12.194302,"eighty":17.964864,"marketCap":3538083053},{"date":"2025-09-12","current":12.301205,"twenty":10.845655,"median":12.180135,"eighty":17.964864,"marketCap":3520063680},{"date":"2025-09-19","current":12.296812,"twenty":10.845655,"median":12.178193,"eighty":17.964864,"marketCap":3518806514},{"date":"2025-09-26","current":12.003926,"twenty":10.845655,"median":12.170583,"eighty":17.964864,"marketCap":3434995474},{"date":"2025-09-30","current":11.9556,"twenty":10.845655,"median":12.169413,"eighty":17.964864,"marketCap":3421166652}],"updateTime":1759351230989},"$inf$@#url:\"https://stock-news.skytigris.cn/v3/notice/important/events/list\",params:#symbol:\"OTTR\",pageSize:20,pageCount:5,market:\"us\",,,undefined,":[{"items":[{"cdn_pdf":false,"hasAttachments":true,"id":"9570092","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774920008169-OTTR","pdf_url":null,"pub_time":1587484800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 5.02, 5.07, and 9.01","symbol":"OTTR","title":"Current report, items 5.02, 5.07, and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008169/0001437749-20-008169-index.htm","us_notice_code":"Form 8-K","us_title_en":null,"is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 10.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008169/ex_182183.htm","primary":true,"translateUrl":null,"linkName":"ex_182183.htm","type":"EX-10.1","id":"NTFILE8f9tftRcVT1TgYQK","market":"us","size":207059},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008169/ottr20200421_8k.htm","primary":false,"translateUrl":null,"linkName":"ottr20200421_8k.htm","type":"8-K","id":"NTFILE6rTqXHkCqt6y1s3v","market":"us","size":41154},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008169/ottr-20200420.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20200420.xsd","type":"EX-101.SCH","id":"NTFILE3K5JSefj8gichjNd","market":"us","size":3699},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008169/ottr-20200420_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200420_def.xml","type":"EX-101.DEF","id":"NTFILEFtfz4bCqws7SVWww","market":"us","size":11975},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008169/ottr-20200420_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200420_lab.xml","type":"EX-101.LAB","id":"NTFILE2RjzQLdGvxXikpjV","market":"us","size":16020},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008169/ottr-20200420_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200420_pre.xml","type":"EX-101.PRE","id":"NTFILE46q5cSNt8TLic7xB","market":"us","size":12184},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920008169/ottr20200421_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20200421_8k_htm.xml","type":"XML","id":"NTFILEEEy7bECFNu3ExKRA","market":"us","size":2669}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2020-04-22 00:00","pubTimestamp":1587484800,"title_zh":"Current report, items 5.02, 5.07, and 9.01","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 5.07: Submission of Matters to a Vote of Security Holders;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9209095","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774920005746-OTTR","pdf_url":null,"pub_time":1584633600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 5.03, 8.01, and 9.01","symbol":"OTTR","title":"Current report, items 5.03, 8.01, and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/0001437749-20-005746-index.htm","us_notice_code":"Form 8-K","us_title_en":null,"is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 3.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ex_178282.htm","primary":true,"translateUrl":null,"linkName":"ex_178282.htm","type":"EX-3.1","id":"NTFILE5GEYq1tp6Ji6BjPR","market":"us","size":63291},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ottr20200320_8k.htm","primary":false,"translateUrl":null,"linkName":"ottr20200320_8k.htm","type":"8-K","id":"NTFILE3YB9sbLAHy7YfuXR","market":"us","size":23764},{"description":"EXHIBIT 99.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ex_178281.htm","primary":false,"translateUrl":null,"linkName":"ex_178281.htm","type":"EX-99.1","id":"NTFILE6hkrz79mWdBFCm8v","market":"us","size":4842},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ottr-20200320.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20200320.xsd","type":"EX-101.SCH","id":"NTFILEC12jNM1W4RchF9hR","market":"us","size":3699},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ottr-20200320_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200320_def.xml","type":"EX-101.DEF","id":"NTFILEA26JpmXSjXZGMQmd","market":"us","size":12361},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ottr-20200320_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200320_lab.xml","type":"EX-101.LAB","id":"NTFILEF22rNEpQQwMLG4uq","market":"us","size":16564},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ottr-20200320_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200320_pre.xml","type":"EX-101.PRE","id":"NTFILE9nqNQfLUNQvXeeru","market":"us","size":12625},{"description":"","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ex_178281img001.jpg","primary":false,"translateUrl":null,"linkName":"ex_178281img001.jpg","type":"GRAPHIC","id":"NTFILECKfWvCTwph38RSoP","market":"us","size":4962},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005746/ottr20200320_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20200320_8k_htm.xml","type":"XML","id":"NTFILEFcugCDxntaDcyVu6","market":"us","size":2763}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2020-03-20 00:00","pubTimestamp":1584633600,"title_zh":"Current report, items 5.03, 8.01, and 9.01","summary_en":"Item 5.03: Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9193914","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774920005451-OTTR","pdf_url":null,"pub_time":1584374400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 7.01 and 9.01","symbol":"OTTR","title":"Current report, items 7.01 and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/0001437749-20-005451-index.htm","us_notice_code":"Form 8-K","us_title_en":null,"is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/ex_177730.htm","primary":true,"translateUrl":null,"linkName":"ex_177730.htm","type":"EX-99.1","id":"NTFILE8hDPQv1Hw2V37tCX","market":"us","size":11707},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/ottr20200317_8k.htm","primary":false,"translateUrl":null,"linkName":"ottr20200317_8k.htm","type":"8-K","id":"NTFILE2TLJVSXUV682ChK2","market":"us","size":24951},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/ottr-20200317.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20200317.xsd","type":"EX-101.SCH","id":"NTFILE3PAty3Jh1o7sDZho","market":"us","size":3699},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/ottr-20200317_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200317_def.xml","type":"EX-101.DEF","id":"NTFILEFamcr93PSdAe11XK","market":"us","size":11975},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/ottr-20200317_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200317_lab.xml","type":"EX-101.LAB","id":"NTFILE6GB4HUDANpAXX59D","market":"us","size":16020},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/ottr-20200317_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200317_pre.xml","type":"EX-101.PRE","id":"NTFILECRTPrg9SyhNib3FA","market":"us","size":12184},{"description":"","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/ex_177730img001.jpg","primary":false,"translateUrl":null,"linkName":"ex_177730img001.jpg","type":"GRAPHIC","id":"NTFILEAAYT5bsakueWmf8W","market":"us","size":4962},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920005451/ottr20200317_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20200317_8k_htm.xml","type":"XML","id":"NTFILE4t4eNyaNAqBYNb7A","market":"us","size":2669}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2020-03-17 00:00","pubTimestamp":1584374400,"title_zh":"Current report, items 7.01 and 9.01","summary_en":"Item 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9134545","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774920003598-OTTR","pdf_url":null,"pub_time":1582646400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, item 2.03","symbol":"OTTR","title":"Current report, item 2.03","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003598/0001437749-20-003598-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, item 2.03","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003598/ottr20200224_8k.htm","primary":true,"translateUrl":null,"linkName":"ottr20200224_8k.htm","type":"8-K","id":"NTFILED7E7789Ldwu2irpK","market":"us","size":28814},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003598/ottr-20200225.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20200225.xsd","type":"EX-101.SCH","id":"NTFILEEdbeMaMG3mED4kPg","market":"us","size":3888},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003598/ottr-20200225_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200225_def.xml","type":"EX-101.DEF","id":"NTFILE8zEsx17nLFrU1sBj","market":"us","size":11976},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003598/ottr-20200225_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200225_lab.xml","type":"EX-101.LAB","id":"NTFILE5jTWBM61cLCZfk8b","market":"us","size":16021},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003598/ottr-20200225_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200225_pre.xml","type":"EX-101.PRE","id":"NTFILE24rwozjtNiCwcTtL","market":"us","size":12185},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003598/ottr20200224_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20200224_8k_htm.xml","type":"XML","id":"NTFILE8p5skHteuaJG8eK8","market":"us","size":2669}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2020-02-26 00:00","pubTimestamp":1582646400,"title_zh":"Current report, item 2.03","summary_en":"Item 2.03: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9126576","market":"us","labels":[],"media":"sec.gov","original_id":"AN110465920024312-OTTR","pdf_url":null,"pub_time":1582473600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"[Amend] General statement of acquisition of beneficial ownership","symbol":"OTTR","title":"[Amend] General statement of acquisition of beneficial ownership","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000110465920024312/0001104659-20-024312-index.htm","us_notice_code":"Form SC 13D/A","us_title_en":"[Amend] General statement of acquisition of beneficial ownership","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"SC 13D/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1052192/000110465920024312/a20-10756_1sc13da.htm","primary":true,"translateUrl":null,"linkName":"a20-10756_1sc13da.htm","type":"SC 13D/A","id":"NTFILEoZSXN1TQyUbNL1A9","market":"us","size":67941}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2020-02-24 00:00","pubTimestamp":1582473600,"title_zh":"Amend] General statement of acquisition of beneficial ownership","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9116501","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774920003157-OTTR","pdf_url":null,"pub_time":1582128000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"OTTR","title":"Annual report [Section 13 and 15(d), not S-K Item 405]","titleType":"Annual Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/0001437749-20-003157-index.htm","us_notice_code":"Form 10-K","us_title_en":"Annual report [Section 13 and 15(d), not S-K Item 405]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ottr20191231_10k.htm","primary":true,"translateUrl":null,"linkName":"ottr20191231_10k.htm","type":"10-K","id":"NTFILE6yAsX76x6wtwMVm4","market":"us","size":5692042},{"description":"EXHIBIT 4.I","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ex_171883.htm","primary":false,"translateUrl":null,"linkName":"ex_171883.htm","type":"EX-4.I","id":"NTFILEHaQhyUJ7jVaPQyYo","market":"us","size":49685},{"description":"EXHIBIT 21.A","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ex_171880.htm","primary":false,"translateUrl":null,"linkName":"ex_171880.htm","type":"EX-21.A","id":"NTFILE98nLdtimpLSuJEab","market":"us","size":2905},{"description":"EXHIBIT 23.A","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ex_171881.htm","primary":false,"translateUrl":null,"linkName":"ex_171881.htm","type":"EX-23.A","id":"NTFILECRHFrNA4SYeNsaCH","market":"us","size":2673},{"description":"EXHIBIT 24.A","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ex_171882.htm","primary":false,"translateUrl":null,"linkName":"ex_171882.htm","type":"EX-24.A","id":"NTFILEDUvGXzEnPC8nC7G4","market":"us","size":11919},{"description":"EXHIBIT 31.1","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ex_171884.htm","primary":false,"translateUrl":null,"linkName":"ex_171884.htm","type":"EX-31.1","id":"NTFILE2AZU7qNfyEUXfASe","market":"us","size":8214},{"description":"EXHIBIT 31.2","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ex_171885.htm","primary":false,"translateUrl":null,"linkName":"ex_171885.htm","type":"EX-31.2","id":"NTFILE3HDiVHVwtSPgh6nL","market":"us","size":8167},{"description":"EXHIBIT 32.1","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ex_171886.htm","primary":false,"translateUrl":null,"linkName":"ex_171886.htm","type":"EX-32.1","id":"NTFILEAuVGtxAFLD2pKjXA","market":"us","size":4446},{"description":"EXHIBIT 32.2","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ex_171887.htm","primary":false,"translateUrl":null,"linkName":"ex_171887.htm","type":"EX-32.2","id":"NTFILE85EiMtzo8q5v3HHL","market":"us","size":4329},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ottr-20191231.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20191231.xsd","type":"EX-101.SCH","id":"NTFILECpgJkxAzckhSnhCw","market":"us","size":209882},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ottr-20191231_cal.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191231_cal.xml","type":"EX-101.CAL","id":"NTFILECgEMMck6bJFGEoGs","market":"us","size":92669},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ottr-20191231_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191231_def.xml","type":"EX-101.DEF","id":"NTFILEH3ezm6nRvNwJ752L","market":"us","size":1170857},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ottr-20191231_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191231_lab.xml","type":"EX-101.LAB","id":"NTFILEA5mjgkxPernTvBTp","market":"us","size":1034189},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ottr-20191231_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191231_pre.xml","type":"EX-101.PRE","id":"NTFILEHcsevBSriGQeWHP6","market":"us","size":1254206},{"description":"","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/cashrealization.jpg","primary":false,"translateUrl":null,"linkName":"cashrealization.jpg","type":"GRAPHIC","id":"NTFILE5NSeAYXJvdMyd1H9","market":"us","size":15510},{"description":"","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/chart1.jpg","primary":false,"translateUrl":null,"linkName":"chart1.jpg","type":"GRAPHIC","id":"NTFILE9QWtE2JCdsJxXAG7","market":"us","size":23599},{"description":"","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/chart2.jpg","primary":false,"translateUrl":null,"linkName":"chart2.jpg","type":"GRAPHIC","id":"NTFILE7bBkcYQkPNmLyQ3H","market":"us","size":27171},{"description":"","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/intbearingdebt.jpg","primary":false,"translateUrl":null,"linkName":"intbearingdebt.jpg","type":"GRAPHIC","id":"NTFILEDsu3hpHEMXD2ZoPd","market":"us","size":17904},{"description":"","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ottr20191231_10kimg002.gif","primary":false,"translateUrl":null,"linkName":"ottr20191231_10kimg002.gif","type":"GRAPHIC","id":"NTFILEGAXCMBqXh91fbkZr","market":"us","size":10613},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":41,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920003157/ottr20191231_10k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20191231_10k_htm.xml","type":"XML","id":"NTFILEF7Cmorqg1HccMFXo","market":"us","size":6774128}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Annual Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Annual Report","pubTime":"2020-02-20 00:00","pubTimestamp":1582128000,"title_zh":"Annual report [Section 13 and 15(d), not S-K Item 405","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9106106","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774920002859-OTTR","pdf_url":null,"pub_time":1581955200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 2.02 and 9.01","symbol":"OTTR","title":"Current report, items 2.02 and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/0001437749-20-002859-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 2.02 and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/ex_172947.htm","primary":true,"translateUrl":null,"linkName":"ex_172947.htm","type":"EX-99.1","id":"NTFILE5PMcP87wvnq856mD","market":"us","size":613230},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/ottr20200217_8k.htm","primary":false,"translateUrl":null,"linkName":"ottr20200217_8k.htm","type":"8-K","id":"NTFILE837GaQZjDKFJfEvu","market":"us","size":25100},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/ottr-20200217.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20200217.xsd","type":"EX-101.SCH","id":"NTFILEj62syRdC1k3im9KH","market":"us","size":3888},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/ottr-20200217_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200217_def.xml","type":"EX-101.DEF","id":"NTFILEpE1jFLsBbNbjtJ1L","market":"us","size":11976},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/ottr-20200217_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200217_lab.xml","type":"EX-101.LAB","id":"NTFILE4ACjE2rL5zPMWrLa","market":"us","size":16021},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/ottr-20200217_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20200217_pre.xml","type":"EX-101.PRE","id":"NTFILEDFhCnDt6xvicne7X","market":"us","size":12185},{"description":"","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/a1.jpg","primary":false,"translateUrl":null,"linkName":"a1.jpg","type":"GRAPHIC","id":"NTFILE2P7freRUYscnBTQc","market":"us","size":10561},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774920002859/ottr20200217_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20200217_8k_htm.xml","type":"XML","id":"NTFILE8mUKGp1UrThNbbJF","market":"us","size":2669}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2020-02-18 00:00","pubTimestamp":1581955200,"title_zh":"Current report, items 2.02 and 9.01","summary_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9080399","market":"us","labels":[],"media":"sec.gov","original_id":"AN110465920017372-OTTR","pdf_url":null,"pub_time":1581436800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"[Amend] Statement of acquisition of beneficial ownership by individuals","symbol":"OTTR","title":"[Amend] Statement of acquisition of beneficial ownership by individuals","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000110465920017372/0001104659-20-017372-index.htm","us_notice_code":"Form SC 13G/A","us_title_en":"[Amend] Statement of acquisition of beneficial ownership by individuals","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"SCHEDULE 13G/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/102909/000110465920017372/tv0865-ottertailcorp.htm","primary":true,"translateUrl":null,"linkName":"tv0865-ottertailcorp.htm","type":"SC 13G/A","id":"NTFILE9hgYzBWwxrgUyZGP","market":"us","size":12143}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2020-02-12 00:00","pubTimestamp":1581436800,"title_zh":"Amend] Statement of acquisition of beneficial ownership by individuals","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"9056684","market":"us","labels":[],"media":"sec.gov","original_id":"AN83423720006002-OTTR","pdf_url":null,"pub_time":1580832000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"[Amend] Statement of acquisition of beneficial ownership by individuals","symbol":"OTTR","title":"[Amend] Statement of acquisition of beneficial ownership by individuals","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000083423720006002/0000834237-20-006002-index.htm","us_notice_code":"Form SC 13G/A","us_title_en":"[Amend] Statement of acquisition of beneficial ownership by individuals","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1364742/000083423720006002/us6896481032_020520.txt","primary":true,"translateUrl":null,"linkName":"us6896481032_020520.txt","type":"SC 13G/A","id":"NTFILE2ejMr6p7DyAgsLRD","market":"us","size":11545}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Beneficial Ownership Change","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Beneficial Ownership Change","pubTime":"2020-02-05 00:00","pubTimestamp":1580832000,"title_zh":"Amend] Statement of acquisition of beneficial ownership by individuals","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8921205","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919024938-OTTR","pdf_url":null,"pub_time":1577376000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 5.02 and 9.01","symbol":"OTTR","title":"Current report, items 5.02 and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919024938/0001437749-19-024938-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 5.02 and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EXHIBIT 10.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919024938/ex_168105.htm","primary":true,"translateUrl":null,"linkName":"ex_168105.htm","type":"EX-10.1","id":"NTFILEFzi1Vk6bjZyxgdyG","market":"us","size":312418},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919024938/ottr20191223_8k.htm","primary":false,"translateUrl":null,"linkName":"ottr20191223_8k.htm","type":"8-K","id":"NTFILE6SwtHKzDjVpLXzRr","market":"us","size":28845},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919024938/ottr-20191226.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20191226.xsd","type":"EX-101.SCH","id":"NTFILEBn7mm8UMoEJ47DCV","market":"us","size":3888},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919024938/ottr-20191226_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191226_def.xml","type":"EX-101.DEF","id":"NTFILEHXcQUZRTE443vpeH","market":"us","size":11976},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919024938/ottr-20191226_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191226_lab.xml","type":"EX-101.LAB","id":"NTFILE7Zq4tWR9QESeDGqi","market":"us","size":16021},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919024938/ottr-20191226_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191226_pre.xml","type":"EX-101.PRE","id":"NTFILE31v4MUyHX8aMQaQ4","market":"us","size":12185},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919024938/ottr20191223_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20191223_8k_htm.xml","type":"XML","id":"NTFILEH8Lyp896f7qZs3Ys","market":"us","size":2696}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2019-12-27 00:00","pubTimestamp":1577376000,"title_zh":"Current report, items 5.02 and 9.01","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8778367","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919023329-OTTR","pdf_url":null,"pub_time":1574265600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Statement of changes in beneficial ownership of securities","symbol":"OTTR","title":"Statement of changes in beneficial ownership of securities","titleType":"Statement Of Changes In Beneficial Ownership","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919023329/0001437749-19-023329-index.htm","us_notice_code":"Form 4","us_title_en":"Statement of changes in beneficial ownership of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"ERICKSON112019","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1191483/000143774919023329/xslF345X03/rdgdoc.xml","primary":true,"translateUrl":null,"linkName":"rdgdoc.html","type":"4","id":"NTFILECyr5rRWtVtqNjL2s","market":"us","size":0},{"description":"ERICKSON112019","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1191483/000143774919023329/rdgdoc.xml","primary":false,"translateUrl":null,"linkName":"rdgdoc.xml","type":"4","id":"NTFILE3aYbGv1zGKCMnwXi","market":"us","size":6834}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Statement Of Changes In Beneficial Ownership","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Statement Of Changes In Beneficial Ownership","pubTime":"2019-11-21 00:00","pubTimestamp":1574265600,"title_zh":"Statement of changes in beneficial ownership of securities","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8745309","market":"us","labels":[],"media":"sec.gov","original_id":"AN110465919061722-OTTR","pdf_url":null,"pub_time":1573142400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 1.01 and 9.01","symbol":"OTTR","title":"Current report, items 1.01 and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000110465919061722/0001104659-19-061722-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 1.01 and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/ix?doc=/Archives/edgar/data/1466593/000110465919061722/tm1921930d3_8k.htm","primary":true,"translateUrl":null,"linkName":"tm1921930d3_8k.htm","type":"8-K","id":"NTFILEiq9AMx6qHE8Eugdo","market":"us","size":29401},{"description":"EXHIBIT 1.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000110465919061722/tm1921930d3_ex1-1.htm","primary":false,"translateUrl":null,"linkName":"tm1921930d3_ex1-1.htm","type":"EX-1.1","id":"NTFILEGaZJXEf7LxtDmhSJ","market":"us","size":281056},{"description":"EXHIBIT 5.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000110465919061722/tm1921930d3_ex5-1.htm","primary":false,"translateUrl":null,"linkName":"tm1921930d3_ex5-1.htm","type":"EX-5.1","id":"NTFILE9XyQeR4eEAUAziHi","market":"us","size":8310},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000110465919061722/ottr-20191108.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20191108.xsd","type":"EX-101.SCH","id":"NTFILE4bqv7nmg7J3UH9Uj","market":"us","size":3174},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000110465919061722/ottr-20191108_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191108_lab.xml","type":"EX-101.LAB","id":"NTFILE8gZ7ar8aBAPVYkW6","market":"us","size":34591},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000110465919061722/ottr-20191108_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191108_pre.xml","type":"EX-101.PRE","id":"NTFILEG3yZicHUVGFopSSJ","market":"us","size":22702},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000110465919061722/tm1921930d3_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"tm1921930d3_8k_htm.xml","type":"XML","id":"NTFILEDWkMfEUMCQi3fid4","market":"us","size":3624}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2019-11-08 00:00","pubTimestamp":1573142400,"title_zh":"Current report, items 1.01 and 9.01","summary_en":"Item 1.01: Entry into a Material Definitive Agreement;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8745018","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919022085-OTTR","pdf_url":null,"pub_time":1573142400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Quarterly report [Sections 13 or 15(d)]","symbol":"OTTR","title":"Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/0001437749-19-022085-index.htm","us_notice_code":"Form 10-Q","us_title_en":"Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/ix?doc=/Archives/edgar/data/1466593/000143774919022085/ottr20190930_10q.htm","primary":true,"translateUrl":null,"linkName":"ottr20190930_10q.htm","type":"10-Q","id":"NTFILE2GvEJnw17YhmZYAd","market":"us","size":3211521},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ex_162323.htm","primary":false,"translateUrl":null,"linkName":"ex_162323.htm","type":"EX-31.1","id":"NTFILEDJqfHBE15RdoGaYY","market":"us","size":8682},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ex_162324.htm","primary":false,"translateUrl":null,"linkName":"ex_162324.htm","type":"EX-31.2","id":"NTFILEAPctp6LX8ezhUGSi","market":"us","size":8661},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ex_162325.htm","primary":false,"translateUrl":null,"linkName":"ex_162325.htm","type":"EX-32.1","id":"NTFILE4ggqVytYxFi1HWir","market":"us","size":4829},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ex_162326.htm","primary":false,"translateUrl":null,"linkName":"ex_162326.htm","type":"EX-32.2","id":"NTFILECTLdLHdbM2yoyhgj","market":"us","size":4684},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ottr-20190930.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20190930.xsd","type":"EX-101.SCH","id":"NTFILE57Uva6KMchB2UkWv","market":"us","size":127206},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ottr-20190930_cal.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190930_cal.xml","type":"EX-101.CAL","id":"NTFILE7kBgHeXqemfEbk24","market":"us","size":67837},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ottr-20190930_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190930_def.xml","type":"EX-101.DEF","id":"NTFILEHoTbuS29iJrRdmxp","market":"us","size":672600},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ottr-20190930_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190930_lab.xml","type":"EX-101.LAB","id":"NTFILEbSKBiWEz4hZNPZf8","market":"us","size":641323},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ottr-20190930_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190930_pre.xml","type":"EX-101.PRE","id":"NTFILE7kK7ikyDrXyUEJM7","market":"us","size":710196},{"description":"","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/segment.jpg","primary":false,"translateUrl":null,"linkName":"segment.jpg","type":"GRAPHIC","id":"NTFILEUMCsz6AkVoCt7EgX","market":"us","size":19986},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":29,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919022085/ottr20190930_10q_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20190930_10q_htm.xml","type":"XML","id":"NTFILE6tR1taruVtJ9gSBR","market":"us","size":3736270}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Quarterly Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Quarterly Report","pubTime":"2019-11-08 00:00","pubTimestamp":1573142400,"title_zh":"Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8603026","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919021527-OTTR","pdf_url":null,"pub_time":1572883200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 1.01, 2.02, and 9.01","symbol":"OTTR","title":"Current report, items 1.01, 2.02, and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/0001437749-19-021527-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 1.01, 2.02, and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/ix?doc=/Archives/edgar/data/1466593/000143774919021527/ottr20191101_8k.htm","primary":true,"translateUrl":null,"linkName":"ottr20191101_8k.htm","type":"8-K","id":"NTFILEJ4YPnZ18JpMbNCzc","market":"us","size":35686},{"description":"EXHIBIT 4.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ex_162568.htm","primary":false,"translateUrl":null,"linkName":"ex_162568.htm","type":"EX-4.1","id":"NTFILEEhXxVkuxTXLMd3US","market":"us","size":95815},{"description":"EXHIBIT 4.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ex_162569.htm","primary":false,"translateUrl":null,"linkName":"ex_162569.htm","type":"EX-4.2","id":"NTFILE55PicgQXKqXwRhKN","market":"us","size":75477},{"description":"EXHIBIT 99.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ex_162570.htm","primary":false,"translateUrl":null,"linkName":"ex_162570.htm","type":"EX-99.1","id":"NTFILEGnDvQKWD9n5DnFuX","market":"us","size":584353},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ottr-20191031.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20191031.xsd","type":"EX-101.SCH","id":"NTFILE3mvwGNwuzyA5Ugxz","market":"us","size":3887},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ottr-20191031_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191031_def.xml","type":"EX-101.DEF","id":"NTFILE4goarbRwj16wzAMP","market":"us","size":11586},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ottr-20191031_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191031_lab.xml","type":"EX-101.LAB","id":"NTFILEDSjWQdURNr88kmnq","market":"us","size":15454},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ottr-20191031_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191031_pre.xml","type":"EX-101.PRE","id":"NTFILEEZTCLkC2ifgJiFpD","market":"us","size":11740},{"description":"","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ex_162570img001.jpg","primary":false,"translateUrl":null,"linkName":"ex_162570img001.jpg","type":"GRAPHIC","id":"NTFILE7NkcmBktSN1nYBMS","market":"us","size":4962},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919021527/ottr20191101_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20191101_8k_htm.xml","type":"XML","id":"NTFILECRZRR18GNVrQ5uF2","market":"us","size":2582}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2019-11-05 00:00","pubTimestamp":1572883200,"title_zh":"Current report, items 1.01, 2.02, and 9.01","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8564620","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919019954-OTTR","pdf_url":null,"pub_time":1570723200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, item 2.03","symbol":"OTTR","title":"Current report, item 2.03","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919019954/0001437749-19-019954-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, item 2.03","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/ix?doc=/Archives/edgar/data/1466593/000143774919019954/ottr20191010_8k.htm","primary":true,"translateUrl":null,"linkName":"ottr20191010_8k.htm","type":"8-K","id":"NTFILE7cznnq4UXLN1MRAe","market":"us","size":28672},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919019954/ottr-20191010.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20191010.xsd","type":"EX-101.SCH","id":"NTFILEHPmgtj7nMGybJLx8","market":"us","size":3888},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919019954/ottr-20191010_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191010_def.xml","type":"EX-101.DEF","id":"NTFILEAFRE4zGmaziqrWjR","market":"us","size":11587},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919019954/ottr-20191010_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191010_lab.xml","type":"EX-101.LAB","id":"NTFILE2n4mEJCFanTJmWKe","market":"us","size":15455},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919019954/ottr-20191010_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20191010_pre.xml","type":"EX-101.PRE","id":"NTFILE5ZZz74fmNf7M62V5","market":"us","size":11741},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919019954/ottr20191010_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20191010_8k_htm.xml","type":"XML","id":"NTFILE6ybqLR7MASuoToto","market":"us","size":2570}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2019-10-11 00:00","pubTimestamp":1570723200,"title_zh":"Current report, item 2.03","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8526488","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919018451-OTTR","pdf_url":null,"pub_time":1568563200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 1.01, 2.03, and 9.01","symbol":"OTTR","title":"Current report, items 1.01, 2.03, and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919018451/0001437749-19-018451-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 1.01, 2.03, and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/ix?doc=/Archives/edgar/data/1466593/000143774919018451/ottr20190913_8k.htm","primary":true,"translateUrl":null,"linkName":"ottr20190913_8k.htm","type":"8-K","id":"NTFILECxAqQZnNMuPnFT8x","market":"us","size":33557},{"description":"EXHIBIT 4.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919018451/ex_157844.htm","primary":false,"translateUrl":null,"linkName":"ex_157844.htm","type":"EX-4.1","id":"NTFILE6EtX2cPe3CxaSLhn","market":"us","size":894371},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919018451/ottr-20190912.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20190912.xsd","type":"EX-101.SCH","id":"NTFILE6LKSDJQ2FuBduDFj","market":"us","size":3886},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919018451/ottr-20190912_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190912_def.xml","type":"EX-101.DEF","id":"NTFILEn3v74Mp4cCAGY8iQ","market":"us","size":11972},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919018451/ottr-20190912_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190912_lab.xml","type":"EX-101.LAB","id":"NTFILE7Dyt2ACPFpZzZX3a","market":"us","size":15997},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919018451/ottr-20190912_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190912_pre.xml","type":"EX-101.PRE","id":"NTFILE94Pj2W686r6Zrfuh","market":"us","size":12181},{"description":"","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919018451/sched515.jpg","primary":false,"translateUrl":null,"linkName":"sched515.jpg","type":"GRAPHIC","id":"NTFILE8uyhNMQeVGMuieBh","market":"us","size":90591},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919018451/ottr20190913_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20190913_8k_htm.xml","type":"XML","id":"NTFILEGu5FzbtjyxC9mnNw","market":"us","size":2653}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2019-09-16 00:00","pubTimestamp":1568563200,"title_zh":"Current report, items 1.01, 2.03, and 9.01","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8464959","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919016223-OTTR","pdf_url":null,"pub_time":1565280000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Quarterly report [Sections 13 or 15(d)]","symbol":"OTTR","title":"Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/0001437749-19-016223-index.htm","us_notice_code":"Form 10-Q","us_title_en":"Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/ix?doc=/Archives/edgar/data/1466593/000143774919016223/ottr20190630_10q.htm","primary":true,"translateUrl":null,"linkName":"ottr20190630_10q.htm","type":"10-Q","id":"NTFILE8C6w6qe3TXynFp3t","market":"us","size":3184989},{"description":"EXHIBIT 2.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ex_150920.htm","primary":false,"translateUrl":null,"linkName":"ex_150920.htm","type":"EX-2.1","id":"NTFILEAA9F7f55A15dPNjN","market":"us","size":124674},{"description":"EXHIBIT 31.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ex_150921.htm","primary":false,"translateUrl":null,"linkName":"ex_150921.htm","type":"EX-31.1","id":"NTFILEHeWhctEiKD1s61Ts","market":"us","size":8545},{"description":"EXHIBIT 31.2","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ex_150922.htm","primary":false,"translateUrl":null,"linkName":"ex_150922.htm","type":"EX-31.2","id":"NTFILE9bmzcmkXAnd7JiXb","market":"us","size":8555},{"description":"EXHIBIT 32.1","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ex_150924.htm","primary":false,"translateUrl":null,"linkName":"ex_150924.htm","type":"EX-32.1","id":"NTFILE7neL8d7KRGMbQSRs","market":"us","size":4527},{"description":"EXHIBIT 32.2","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ex_150925.htm","primary":false,"translateUrl":null,"linkName":"ex_150925.htm","type":"EX-32.2","id":"NTFILEGVYfY4cZiuoLWrFn","market":"us","size":4618},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ottr-20190630.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20190630.xsd","type":"EX-101.SCH","id":"NTFILE93imgcsN18UNrHP1","market":"us","size":120591},{"description":"XBRL TAXONOMY EXTENSION CALCULATION LINKBASE","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ottr-20190630_cal.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190630_cal.xml","type":"EX-101.CAL","id":"NTFILE9yGwyoHpCEEBBa2Q","market":"us","size":67341},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":9,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ottr-20190630_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190630_def.xml","type":"EX-101.DEF","id":"NTFILE5J9A1j7iptXvsYby","market":"us","size":637873},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":10,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ottr-20190630_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190630_lab.xml","type":"EX-101.LAB","id":"NTFILEB4ETdRpkADSzDrcg","market":"us","size":610055},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":11,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ottr-20190630_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190630_pre.xml","type":"EX-101.PRE","id":"NTFILED8AG6piN1oacwi1n","market":"us","size":674722},{"description":"","seq":12,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/flowchart.jpg","primary":false,"translateUrl":null,"linkName":"flowchart.jpg","type":"GRAPHIC","id":"NTFILEAzJXEwv437DGyZCq","market":"us","size":14503},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":13,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919016223/ottr20190630_10q_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20190630_10q_htm.xml","type":"XML","id":"NTFILEEw5Ap4qU1pRXeF8o","market":"us","size":3819311}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Quarterly Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Quarterly Report","pubTime":"2019-08-09 00:00","pubTimestamp":1565280000,"title_zh":"Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8453394","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919015564-OTTR","pdf_url":null,"pub_time":1565020800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 2.02 and 9.01","symbol":"OTTR","title":"Current report, items 2.02 and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919015564/0001437749-19-015564-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 2.02 and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/ix?doc=/Archives/edgar/data/1466593/000143774919015564/ottr20190805_8k.htm","primary":true,"translateUrl":null,"linkName":"ottr20190805_8k.htm","type":"8-K","id":"NTFILEBwCNmWvSEVeX5y53","market":"us","size":22944},{"description":"EXHIBIT 99.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919015564/ex_153262.htm","primary":false,"translateUrl":null,"linkName":"ex_153262.htm","type":"EX-99.1","id":"NTFILEGbnYrjWJU6DVqhcV","market":"us","size":538937},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919015564/ottr-20190806.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20190806.xsd","type":"EX-101.SCH","id":"NTFILECcHJc5up5Mdd5Wmr","market":"us","size":3885},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919015564/ottr-20190806_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190806_def.xml","type":"EX-101.DEF","id":"NTFILEAk6cBc7KzQ1q7PvY","market":"us","size":11971},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919015564/ottr-20190806_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190806_lab.xml","type":"EX-101.LAB","id":"NTFILE8MJ5V1z6e4gyaj4T","market":"us","size":15996},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919015564/ottr-20190806_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190806_pre.xml","type":"EX-101.PRE","id":"NTFILEH55CHu18XLXTDiBS","market":"us","size":12180},{"description":"","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919015564/ex_153262img001.jpg","primary":false,"translateUrl":null,"linkName":"ex_153262img001.jpg","type":"GRAPHIC","id":"NTFILE4otSZZTjengi2Fz3","market":"us","size":4962},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919015564/ottr20190805_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20190805_8k_htm.xml","type":"XML","id":"NTFILECkojGb4NdJ1csZ6A","market":"us","size":2648}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2019-08-06 00:00","pubTimestamp":1565020800,"title_zh":"Current report, items 2.02 and 9.01","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8399277","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919014093-OTTR","pdf_url":null,"pub_time":1563206400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, items 1.01 and 9.01","symbol":"OTTR","title":"Current report, items 1.01 and 9.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919014093/0001437749-19-014093-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, items 1.01 and 9.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/ix?doc=/Archives/edgar/data/1466593/000143774919014093/ottr20190715_8k.htm","primary":true,"translateUrl":null,"linkName":"ottr20190715_8k.htm","type":"8-K","id":"NTFILE9LmDodk2GgspUMX2","market":"us","size":24086},{"description":"EXHIBIT 99.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919014093/ex_150204.htm","primary":false,"translateUrl":null,"linkName":"ex_150204.htm","type":"EX-99.1","id":"NTFILEFwhs9g1NPe7Diup3","market":"us","size":6139},{"description":"XBRL TAXONOMY EXTENSION SCHEMA","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919014093/ottr-20190716.xsd","primary":false,"translateUrl":null,"linkName":"ottr-20190716.xsd","type":"EX-101.SCH","id":"NTFILE64DkZ9gi42y9zDFc","market":"us","size":3887},{"description":"XBRL TAXONOMY EXTENSION DEFINITION LINKBASE","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919014093/ottr-20190716_def.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190716_def.xml","type":"EX-101.DEF","id":"NTFILEGwJPC9LF9QuCRvet","market":"us","size":11973},{"description":"XBRL TAXONOMY EXTENSION LABEL LINKBASE","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919014093/ottr-20190716_lab.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190716_lab.xml","type":"EX-101.LAB","id":"NTFILE7g1syeNVtW13HJj7","market":"us","size":15998},{"description":"XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919014093/ottr-20190716_pre.xml","primary":false,"translateUrl":null,"linkName":"ottr-20190716_pre.xml","type":"EX-101.PRE","id":"NTFILE6xieNdnf3UR39EQy","market":"us","size":12182},{"description":"","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919014093/logo.jpg","primary":false,"translateUrl":null,"linkName":"logo.jpg","type":"GRAPHIC","id":"NTFILE9J6sy5FshwhDZp82","market":"us","size":5657},{"description":"EXTRACTED XBRL INSTANCE DOCUMENT","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919014093/ottr20190715_8k_htm.xml","primary":false,"translateUrl":null,"linkName":"ottr20190715_8k_htm.xml","type":"XML","id":"NTFILE79QfoGEybKeAcohZ","market":"us","size":2648}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2019-07-16 00:00","pubTimestamp":1563206400,"title_zh":"Current report, items 1.01 and 9.01","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"8288375","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774919011817-OTTR","pdf_url":null,"pub_time":1560182400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"Current report, item 1.01","symbol":"OTTR","title":"Current report, item 1.01","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919011817/0001437749-19-011817-index.htm","us_notice_code":"Form 8-K","us_title_en":"Current report, item 1.01","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1466593/000143774919011817/ottr20190611_8k.htm","primary":true,"translateUrl":null,"linkName":"ottr20190611_8k.htm","type":"8-K","id":"NTFILEVN62PUgoCvumVzm6","market":"us","size":19081}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Major Issues Report","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Major Issues Report","pubTime":"2019-06-11 00:00","pubTimestamp":1560182400,"title_zh":"Current report, item 1.01","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0}],"pageSize":20,"totalPage":7,"pageCount":5,"totalSize":128,"code":"91000000","status":"200"}]}}