US StockDetailed Quotes

Provided by Tiger Trade Technology Pte. Ltd.

Natural Gas

35.40

+0.66001.90%

Post-market: 36.070.6697+1.89%16:32 EDT

Volume:77.75K

Turnover:2.73M

Market Cap:455.82M

PE:22.12

High:35.50

Open:34.67

Low:34.30

Close:34.74

52wk High:44.61

52wk Low:25.25

Shares:12.88M

Float Shares:12.48M

Volume Ratio:0.60

T/O Rate:0.62%

Dividend:0.47

Dividend Rate:1.33%

EPS(TTM):1.60

EPS(LYR):1.57

ROE:7.30%

ROA:4.39%

PB:1.55

PE(LYR):22.55

Loading ...

Overview Company News Filings

Major Issues Report

8-K - Current report

Major Issues Report

8-K - Current report

Quarterly Report

10-Q - Quarterly report [Sections 13 or 15(d)]

Major Issues Report

8-K - Current report

Major Issues Report

8-K - Current report

[Rev.]Annual Report

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

Annual Report

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

Major Issues Report

8-K - Current report

Beneficial Ownership Change

SC 13G/A [Amend] - Statement of acquisition of beneficial ownership by individuals

Beneficial Ownership Change

SC 13G/A [Amend] - Statement of acquisition of beneficial ownership by individuals

Correspondence

CORRESP [Cover] - Correspondence

Statement Of Changes In Beneficial Ownership

4 - Statement of changes in beneficial ownership of securities

Statement Of Changes In Beneficial Ownership

4 - Statement of changes in beneficial ownership of securities

Statement Of Changes In Beneficial Ownership

4 - Statement of changes in beneficial ownership of securities

Quarterly Report

10-Q - Quarterly report [Sections 13 or 15(d)]

Major Issues Report

8-K - Current report

Major Issues Report

8-K - Current report

Beneficial Ownership Change

SC 13D - General statement of acquisition of beneficial ownership

Major Issues Report

8-K - Current report

Annual Report

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

{"basename":"","ssrTDKData":{"titleTemplate":"%s - Tiger Brokers","title":"Tiger Brokers HK | Online Trading in stocks, bonds & ETFS","description":"Discover Tiger Brokers HK, an online trading platform for stocks&ETFs, options&futures, bonds and crypto. Open an account to enjoy low commission trading today!","keywords":"tiger trading,tiger security,tiger broker hk,tigers co ltd,tiger trade hk,tiger brokers hk,stock broker,securities broker,online brokerage,hong kong broker,hk broker,online stock trading,online trading platform,stock trading platforms,trading application,stock trading,stock trading hong kong,buying stocks in hong kong,tiger brokers","social":{"ogDescription":"Discover Tiger Brokers HK, an online trading platform for stocks&ETFs, options&futures, bonds and crypto. Open an account to enjoy low commission trading today!","ogImage":"https://c1.itigergrowtha.com/portal5/static/media/og-logo.0a0bd8dc.png","ogUrl":"https://www.gotigerhk.com/stock/NGS/filings?page=8"},"companyName":"Tiger Brokers"},"pageData":{"isMobile":false,"isTiger":false,"isTTM":true,"region":"HKG","license":"TBHK","edition":"fundamental","symbol":"NGS","isAnalysisPage":false},"__swrFallback__":{"@#url:\"https://hq.skytigris.cn/stock_info/detail/global\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"NGS\",,,,,undefined,":{"symbol":"NGS","market":"US","secType":"STK","nameCN":"Natural Gas","latestPrice":35.4,"timestamp":1787860800000,"preClose":34.74,"halted":0,"volume":77750,"hourTrading":{"tag":"盘后","latestPrice":36.0697,"preClose":35.4,"latestTime":"16:32 EDT","volume":3174,"amount":112426.57140000002,"timestamp":1787862721906,"change":0.6697,"changeRate":0.018918,"amplitude":0.018918},"delay":0,"changeRate":0.018998272884283147,"floatShares":12481581,"shares":12876400,"eps":1.600244,"marketStatus":"Post-Mkt","change":0.66,"latestTime":"08-27 16:45:34 EDT","open":34.67,"high":35.5,"low":34.3,"amount":2728018.915,"amplitude":0.034542,"askPrice":38.89,"askSize":100,"bidPrice":34.69,"bidSize":57,"shortable":3,"etf":0,"ttmEps":1.600244,"tradingStatus":3,"nextMarketStatus":{"tag":"Closed","tradingStatus":0,"beginTime":1787875200000},"marketStatusCode":4,"adr":0,"adrRate":0,"listingDate":1035172800000,"exchange":"NYSE","adjPreClose":34.74,"dividendRate":0.013277,"preHourTrading":{"tag":"盘前","latestPrice":34.51,"preClose":34.74,"latestTime":"07:35 EDT","volume":43,"amount":1470.5900239999999,"timestamp":1787830503497,"change":-0.23,"changeRate":-0.006621,"amplitude":0.033391},"postHourTrading":{"tag":"盘后","latestPrice":36.0697,"preClose":35.4,"latestTime":"16:32 EDT","volume":3174,"amount":112426.57140000002,"timestamp":1787862721906,"change":0.6697,"changeRate":0.018918,"amplitude":0.018918},"volumeRatio":0.596146,"impliedVol":0.2654,"impliedVolPercentile":0.1952},"@#url:\"https://hq.skytigris.cn/stock_info/fundamental/all\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"NGS\",,,,,undefined,":{"symbol":"NGS","floatShares":12481581,"roa":"4.39%","roe":"7.30%","lyrEps":1.57,"volumeRatio":0.596146,"shares":12876400,"dividePrice":0.47,"high":35.5,"amplitude":0.034542,"preClose":34.74,"low":34.3,"week52Low":25.2492,"pbRate":"1.55","psRate":"2.41","week52High":44.605,"institutionHeld":0.8142,"latestPrice":35.4,"committee":-0.273885,"eps":1.600244,"divideRate":0.013277,"volume":77750,"delay":0,"ttmEps":1.600244,"open":34.67,"prevYearClose":33.65,"prevWeekClose":35.49,"prevMonthClose":36.64,"prevQuarterClose":43.14,"fiveDayClose":35.52,"twentyDayClose":35.89,"sixtyDayClose":40.91,"dividendPayoutRate":0.1321246652841813,"dividendFrequency":"Q","dividendGrowthYears":0,"fiveYearAvgDividendRate":0.00617828773168579},"@#url:\"https://hq.skytigris.cn/fundamental/corporate_actions/details/NGS\",params:#limit:5,,,undefined,":[{"date":"2026-08-19","symbol":"NGS","amount":0.15,"announcedDate":"2026-08-10","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-08-19","defaultRemindTime":1787146200000,"name":"Natural Gas Services Group Inc","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-09-02","payableDate":"2026-08-19","currency":"USD","dateTimestamp":1787112000000,"payDate":"2026-09-02"},{"market":"US","date":"2026-08-10","symbol":"NGS","fiscalQuarterEnding":"2026/06","expectedEps":0.37,"name":null,"time":"Post-Mkt","type":"earning","dateTimestamp":1786334400000,"reportTimeType":"post","actualEps":0.47},{"date":"2026-05-20","symbol":"NGS","amount":0.15,"announcedDate":"2026-05-11","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-05-20","defaultRemindTime":1779283800000,"name":"Natural Gas Services Group Inc","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-06-03","payableDate":"2026-05-20","currency":"USD","dateTimestamp":1779249600000,"payDate":"2026-06-03"},{"market":"US","date":"2026-05-11","symbol":"NGS","fiscalQuarterEnding":"2026/03","expectedEps":0.45,"name":null,"time":"Post-Mkt","type":"earning","dateTimestamp":1778472000000,"reportTimeType":"post","actualEps":0.53},{"market":"US","date":"2026-03-16","symbol":"NGS","fiscalQuarterEnding":"2025/12","expectedEps":0.37,"name":null,"time":"Post-Mkt","type":"earning","dateTimestamp":1773633600000,"reportTimeType":"post","actualEps":0.32}],"@#url:\"https://hq.skytigris.cn/fundamental/dividend/history\",params:#symbol:\"NGS\",market:\"US\",,,undefined,":[{"executeDate":"2025-08-08","recordDate":"2025-08-08","paymentDate":"2025-08-22","value":0.1,"currency":"USD"},{"executeDate":"2025-11-20","recordDate":"2025-11-20","paymentDate":"2025-12-03","value":0.11,"currency":"USD"},{"executeDate":"2026-02-18","recordDate":"2026-02-18","paymentDate":"2026-03-04","value":0.11,"currency":"USD"},{"executeDate":"2026-05-20","recordDate":"2026-05-20","paymentDate":"2026-06-03","value":0.15,"currency":"USD"},{"executeDate":"2026-08-19","recordDate":"2026-08-19","paymentDate":"2026-09-02","value":0.15,"currency":"USD"}],"@#url:\"https://hq.skytigris.cn/fundamental/estimate/recommendation\",params:#symbol:\"NGS\",market:\"US\",delay:false,,,undefined,":{},"@#url:\"https://hq.skytigris.cn/value_analysis/stock/NGS\",params:#withQuantilePoint:true,period:\"5year\",factor:\"peRate\",delay:false,algorithm:1,,,undefined,":{"brief":{"id":"NGS","date":"2026-08-26","current":22.121626,"percent":0.659128,"low":-256.562625,"twenty":-25.273878,"median":18.546472,"eighty":25.418922,"high":4916.003289,"avg":203.63888,"sd":923.345959,"marketCap":443314055},"quantilePoints":[{"date":"2021-08-27","current":-26.790874,"twenty":-12.741662,"median":14.35157,"eighty":37.737248,"marketCap":127310231},{"date":"2021-09-03","current":-26.678543,"twenty":-13.103078,"median":14.285128,"eighty":37.730006,"marketCap":126776436},{"date":"2021-09-10","current":-27.998429,"twenty":-13.853437,"median":14.185464,"eighty":37.730006,"marketCap":133048533},{"date":"2021-09-17","current":-26.875122,"twenty":-26.442648,"median":14.119022,"eighty":37.730006,"marketCap":127710578},{"date":"2021-09-24","current":-26.201137,"twenty":-26.802107,"median":13.961896,"eighty":37.730006,"marketCap":124507805},{"date":"2021-10-01","current":-29.739555,"twenty":-26.847039,"median":13.901075,"eighty":37.730006,"marketCap":141322363},{"date":"2021-10-08","current":-34.067857,"twenty":-27.015535,"median":13.799706,"eighty":37.730006,"marketCap":161890457},{"date":"2021-10-15","current":-34.816906,"twenty":-27.610888,"median":13.627348,"eighty":37.730006,"marketCap":165449938},{"date":"2021-10-22","current":-31.376829,"twenty":-28.048977,"median":13.463168,"eighty":37.730006,"marketCap":149102693},{"date":"2021-10-29","current":-31.543285,"twenty":-28.178135,"median":13.252313,"eighty":37.730006,"marketCap":149893688},{"date":"2021-11-05","current":-34.511738,"twenty":-31.443411,"median":12.936346,"eighty":37.730006,"marketCap":163999779},{"date":"2021-11-12","current":-28.323181,"twenty":-31.809613,"median":12.81675,"eighty":37.730006,"marketCap":154248045},{"date":"2021-11-19","current":-26.048708,"twenty":-31.809613,"median":12.67113,"eighty":37.730006,"marketCap":141861262},{"date":"2021-11-26","current":-27.197915,"twenty":-31.809613,"median":12.617422,"eighty":37.730006,"marketCap":148119847},{"date":"2021-12-03","current":-24.684024,"twenty":-31.809613,"median":12.50894,"eighty":37.730006,"marketCap":134429192},{"date":"2021-12-10","current":-24.779791,"twenty":-31.809613,"median":12.421087,"eighty":37.687226,"marketCap":134950741},{"date":"2021-12-17","current":-23.965769,"twenty":-31.809613,"median":12.360265,"eighty":37.648411,"marketCap":130517577},{"date":"2021-12-23","current":-25.378337,"twenty":-31.809613,"median":12.333233,"eighty":37.609634,"marketCap":138210421},{"date":"2021-12-31","current":-25.067093,"twenty":-31.809613,"median":12.272412,"eighty":37.543382,"marketCap":136515387},{"date":"2022-01-07","current":-25.881115,"twenty":-31.787419,"median":12.138372,"eighty":37.480006,"marketCap":140948552},{"date":"2022-01-14","current":-27.269741,"twenty":-31.787419,"median":12.096706,"eighty":37.480006,"marketCap":148511009},{"date":"2022-01-21","current":-24.564314,"twenty":-31.787419,"median":12.0494,"eighty":37.480006,"marketCap":133777256},{"date":"2022-01-28","current":-25.569871,"twenty":-31.787419,"median":11.991958,"eighty":37.480006,"marketCap":139253518},{"date":"2022-02-04","current":-27.078206,"twenty":-31.787419,"median":11.826389,"eighty":37.480006,"marketCap":147467911},{"date":"2022-02-11","current":-27.580985,"twenty":-31.787419,"median":11.485112,"eighty":37.480006,"marketCap":150206042},{"date":"2022-02-18","current":-28.011938,"twenty":-31.787419,"median":11.29589,"eighty":37.480006,"marketCap":152553012},{"date":"2022-02-25","current":-29.544214,"twenty":-31.787419,"median":11.133699,"eighty":37.480006,"marketCap":160897792},{"date":"2022-03-04","current":-30.14276,"twenty":-31.881744,"median":10.532243,"eighty":37.480006,"marketCap":164157472},{"date":"2022-03-11","current":-30.046993,"twenty":-31.881744,"median":-4.119645,"eighty":37.480006,"marketCap":163635923},{"date":"2022-03-18","current":-15.427724,"twenty":-31.881744,"median":-4.318331,"eighty":37.480006,"marketCap":141672794},{"date":"2022-03-25","current":-17.560462,"twenty":-31.881744,"median":-4.629788,"eighty":37.480006,"marketCap":161257722},{"date":"2022-04-01","current":-16.341755,"twenty":-31.881744,"median":-4.822481,"eighty":37.480006,"marketCap":150066334},{"date":"2022-04-08","current":-16.411,"twenty":-31.881744,"median":-5.183933,"eighty":37.480006,"marketCap":150702209},{"date":"2022-04-14","current":-18.751471,"twenty":-31.881744,"median":-5.307647,"eighty":37.480006,"marketCap":172194760},{"date":"2022-04-22","current":-18.059024,"twenty":-31.881744,"median":-5.395181,"eighty":37.480006,"marketCap":165836017},{"date":"2022-04-29","current":-17.006504,"twenty":-31.881744,"median":-6.229586,"eighty":37.480006,"marketCap":156170728},{"date":"2022-05-06","current":-17.034202,"twenty":-31.881744,"median":-7.732276,"eighty":37.344582,"marketCap":156425077},{"date":"2022-05-13","current":-16.521791,"twenty":-31.881744,"median":-7.991191,"eighty":37.158672,"marketCap":151719607},{"date":"2022-05-20","current":-18.452669,"twenty":-31.881744,"median":-8.222801,"eighty":36.80071,"marketCap":155961962},{"date":"2022-05-27","current":-20.593179,"twenty":-31.881744,"median":-8.345427,"eighty":36.320704,"marketCap":174053550},{"date":"2022-06-03","current":-21.803674,"twenty":-31.881744,"median":-8.440783,"eighty":36.0474,"marketCap":184284654},{"date":"2022-06-10","current":-20.799849,"twenty":-31.881744,"median":-8.556638,"eighty":35.889171,"marketCap":175800324},{"date":"2022-06-17","current":-18.93982,"twenty":-31.881744,"median":-8.686057,"eighty":35.745327,"marketCap":160079358},{"date":"2022-06-24","current":-17.566941,"twenty":-31.887292,"median":-8.733766,"eighty":35.745327,"marketCap":148475788},{"date":"2022-07-01","current":-15.647864,"twenty":-31.887292,"median":-8.856393,"eighty":35.486407,"marketCap":132255744},{"date":"2022-07-08","current":-14.688325,"twenty":-31.887292,"median":-8.951769,"eighty":35.371332,"marketCap":124145722},{"date":"2022-07-15","current":-14.688325,"twenty":-31.887292,"median":-9.128897,"eighty":33.715796,"marketCap":124145722},{"date":"2022-07-22","current":-14.79166,"twenty":-31.887292,"median":-9.181358,"eighty":33.205764,"marketCap":125019109},{"date":"2022-07-29","current":-14.835946,"twenty":-31.887292,"median":-9.251524,"eighty":32.776264,"marketCap":125393417},{"date":"2022-08-05","current":-14.58499,"twenty":-31.887292,"median":-9.510403,"eighty":32.212544,"marketCap":123272335},{"date":"2022-08-12","current":-14.821184,"twenty":-31.887292,"median":-9.695353,"eighty":31.729356,"marketCap":125268648},{"date":"2022-08-19","current":-19.552796,"twenty":-31.887292,"median":-9.957389,"eighty":31.460918,"marketCap":129107109},{"date":"2022-08-26","current":-21.924529,"twenty":-31.887292,"median":-10.380679,"eighty":31.232746,"marketCap":144767665},{"date":"2022-09-02","current":-19.851597,"twenty":-31.887292,"median":-10.532245,"eighty":17.341066,"marketCap":131080092},{"date":"2022-09-09","current":-19.048569,"twenty":-31.887292,"median":-10.652794,"eighty":17.216549,"marketCap":125777699},{"date":"2022-09-16","current":-19.197969,"twenty":-31.887292,"median":-10.818271,"eighty":16.954202,"marketCap":126764191},{"date":"2022-09-23","current":-18.899168,"twenty":-31.887292,"median":-10.898506,"eighty":16.659061,"marketCap":124791207},{"date":"2022-09-30","current":-18.749768,"twenty":-31.887292,"median":-10.955144,"eighty":16.54085,"marketCap":123804715},{"date":"2022-10-07","current":-20.000997,"twenty":-31.887292,"median":-11.03223,"eighty":16.403272,"marketCap":132066584},{"date":"2022-10-14","current":-18.675067,"twenty":-31.887292,"median":-11.099092,"eighty":16.101573,"marketCap":123311470},{"date":"2022-10-21","current":-19.31002,"twenty":-31.887292,"median":-11.192699,"eighty":16.003192,"marketCap":127504059},{"date":"2022-10-28","current":-20.635949,"twenty":-31.887292,"median":-11.247415,"eighty":15.842139,"marketCap":136259174},{"date":"2022-11-04","current":-20.635949,"twenty":-31.887292,"median":-11.267572,"eighty":15.807513,"marketCap":136259174},{"date":"2022-11-11","current":-22.055255,"twenty":-31.887292,"median":-11.286306,"eighty":15.736525,"marketCap":145630846},{"date":"2022-11-18","current":-23.465315,"twenty":-31.887292,"median":-11.328042,"eighty":15.65657,"marketCap":127346266},{"date":"2022-11-25","current":-25.365434,"twenty":-31.887292,"median":-11.428825,"eighty":15.578104,"marketCap":137658208},{"date":"2022-12-02","current":-25.18229,"twenty":-31.887292,"median":-11.499373,"eighty":15.386829,"marketCap":136664286},{"date":"2022-12-09","current":-25.479898,"twenty":-31.887292,"median":-11.607243,"eighty":15.281063,"marketCap":138279409},{"date":"2022-12-16","current":-25.8004,"twenty":-31.887292,"median":-11.670705,"eighty":15.162248,"marketCap":140018773},{"date":"2022-12-23","current":-25.388327,"twenty":-31.887292,"median":-11.791645,"eighty":14.951019,"marketCap":137782448},{"date":"2022-12-30","current":-26.235367,"twenty":-31.887292,"median":-11.823169,"eighty":14.918014,"marketCap":142379337},{"date":"2023-01-06","current":-27.128194,"twenty":-31.887292,"median":-11.932742,"eighty":14.785997,"marketCap":147224708},{"date":"2023-01-13","current":-28.547559,"twenty":-31.887292,"median":-12.023447,"eighty":14.719988,"marketCap":154927604},{"date":"2023-01-20","current":-26.120902,"twenty":-31.887292,"median":-12.063912,"eighty":14.685063,"marketCap":141758136},{"date":"2023-01-27","current":-26.990836,"twenty":-31.887292,"median":-12.194778,"eighty":14.620974,"marketCap":146479266},{"date":"2023-02-03","current":-25.228076,"twenty":-31.887292,"median":-12.335875,"eighty":14.58797,"marketCap":136912766},{"date":"2023-02-10","current":-25.502791,"twenty":-31.887292,"median":-12.406423,"eighty":14.552525,"marketCap":138403649},{"date":"2023-02-17","current":-24.793109,"twenty":-31.887292,"median":-12.503194,"eighty":14.500444,"marketCap":134552201},{"date":"2023-02-24","current":-25.113611,"twenty":-31.887292,"median":-12.678538,"eighty":14.467353,"marketCap":136291565},{"date":"2023-03-03","current":-25.365434,"twenty":-31.887292,"median":-12.917738,"eighty":14.298416,"marketCap":137658208},{"date":"2023-03-10","current":-24.220784,"twenty":-31.887292,"median":-13.749115,"eighty":14.185464,"marketCap":131446195},{"date":"2023-03-17","current":-21.954378,"twenty":-31.887292,"median":-14.201174,"eighty":14.135349,"marketCap":119146409},{"date":"2023-03-24","current":-22.480917,"twenty":-31.887292,"median":-14.540704,"eighty":14.019358,"marketCap":122003935},{"date":"2023-03-31","current":-23.602673,"twenty":-31.881744,"median":-14.636657,"eighty":13.926338,"marketCap":128091708},{"date":"2023-04-06","current":-226.645675,"twenty":-32.203558,"median":-14.688325,"eighty":13.869988,"marketCap":128961389},{"date":"2023-04-14","current":-239.091536,"twenty":-32.708472,"median":-14.747373,"eighty":13.71861,"marketCap":136043084},{"date":"2023-04-21","current":-236.482789,"twenty":-33.318808,"median":-14.887614,"eighty":13.607415,"marketCap":134558707},{"date":"2023-04-28","current":-226.419691,"twenty":-34.445156,"median":-15.618339,"eighty":13.392255,"marketCap":128832804},{"date":"2023-05-02","current":-228.468188,"twenty":-34.545029,"median":-15.647864,"eighty":13.313134,"marketCap":129998399},{"date":"2023-05-12","current":-220.830761,"twenty":-35.205302,"median":-16.092474,"eighty":12.916413,"marketCap":125652703},{"date":"2023-05-19","current":-243.501254,"twenty":-47.03649,"median":-16.341755,"eighty":12.803461,"marketCap":130516672},{"date":"2023-05-26","current":-239.069718,"twenty":-48.291477,"median":-16.431773,"eighty":12.660056,"marketCap":128141369},{"date":"2023-06-02","current":-228.573974,"twenty":-49.474014,"median":-16.501017,"eighty":12.612107,"marketCap":122515650},{"date":"2023-06-09","current":-240.935629,"twenty":-50.974903,"median":-16.757223,"eighty":12.50894,"marketCap":129141497},{"date":"2023-06-16","current":-229.740168,"twenty":-51.87278,"median":-17.020353,"eighty":12.415681,"marketCap":123140730},{"date":"2023-06-23","current":-227.641019,"twenty":-52.178874,"median":-17.311181,"eighty":12.35621,"marketCap":122015586},{"date":"2023-06-30","current":-230.673123,"twenty":-52.638015,"median":-17.782926,"eighty":12.296741,"marketCap":123640794},{"date":"2023-07-07","current":-228.340735,"twenty":-53.352236,"median":-18.086722,"eighty":12.269558,"marketCap":122390634},{"date":"2023-07-14","current":-232.072556,"twenty":-53.903206,"median":-18.492192,"eighty":12.111564,"marketCap":124390890},{"date":"2023-07-21","current":-235.337897,"twenty":-54.719457,"median":-18.675067,"eighty":12.096706,"marketCap":126141113},{"date":"2023-07-28","current":-247.932791,"twenty":-54.872504,"median":-18.750619,"eighty":12.016488,"marketCap":132891976},{"date":"2023-08-04","current":-240.70239,"twenty":-55.760177,"median":-18.833806,"eighty":11.927757,"marketCap":129016481},{"date":"2023-08-11","current":-236.270853,"twenty":-57.06618,"median":-18.930788,"eighty":11.74363,"marketCap":126641177},{"date":"2023-08-18","current":3452.985,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":131213430},{"date":"2023-08-25","current":3502.079579,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":133079024},{"date":"2023-09-01","current":3554.447132,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":135068991},{"date":"2023-09-08","current":3613.360605,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":137307703},{"date":"2023-09-15","current":3727.914605,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":141660755},{"date":"2023-09-22","current":3960.295605,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":150491233},{"date":"2023-09-29","current":4866.908737,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":184942532},{"date":"2023-10-06","current":4254.863053,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":161684796},{"date":"2023-10-13","current":4660.711526,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":177107038},{"date":"2023-10-20","current":4880.000605,"twenty":-57.321259,"median":-18.936518,"eighty":11.692581,"marketCap":185440023},{"date":"2023-10-27","current":4519.973737,"twenty":-57.443696,"median":-18.93982,"eighty":11.483085,"marketCap":171759002},{"date":"2023-11-03","current":4817.814158,"twenty":-57.443696,"median":-18.93982,"eighty":11.483085,"marketCap":183076938},{"date":"2023-11-10","current":4680.349342,"twenty":-57.443696,"median":-18.93982,"eighty":11.483085,"marketCap":177853275},{"date":"2023-11-17","current":80.307197,"twenty":-57.443696,"median":-18.93982,"eighty":11.483085,"marketCap":183823175},{"date":"2023-11-24","current":85.088682,"twenty":-57.443696,"median":-18.93982,"eighty":11.483085,"marketCap":194767992},{"date":"2023-12-01","current":83.13262,"twenty":-57.443696,"median":-18.93982,"eighty":11.483085,"marketCap":190290567},{"date":"2023-12-08","current":72.156941,"twenty":-57.341665,"median":-18.938169,"eighty":11.488491,"marketCap":165167237},{"date":"2023-12-15","current":70.526889,"twenty":-57.341665,"median":-18.938169,"eighty":11.488491,"marketCap":161436050},{"date":"2023-12-22","current":79.437837,"twenty":-57.341665,"median":-18.938169,"eighty":11.785841,"marketCap":181833209},{"date":"2023-12-29","current":86.664398,"twenty":-57.443696,"median":-18.93982,"eighty":11.88721,"marketCap":198374807},{"date":"2024-01-05","current":83.78464,"twenty":-57.545728,"median":-18.954582,"eighty":11.915593,"marketCap":191783042},{"date":"2024-01-12","current":77.64478,"twenty":-57.545728,"median":-18.954582,"eighty":11.915593,"marketCap":177728902},{"date":"2024-01-19","current":77.373105,"twenty":-57.647759,"median":-18.969344,"eighty":11.992634,"marketCap":177107038},{"date":"2024-01-26","current":84.654001,"twenty":-57.545728,"median":-18.954582,"eighty":12.106167,"marketCap":193773009},{"date":"2024-02-02","current":80.687543,"twenty":-57.545728,"median":-18.954582,"eighty":12.284576,"marketCap":184693786},{"date":"2024-02-09","current":80.959218,"twenty":-57.545728,"median":-18.954582,"eighty":12.419735,"marketCap":185315650},{"date":"2024-02-16","current":82.91528,"twenty":-57.545728,"median":-18.954582,"eighty":12.583277,"marketCap":189793075},{"date":"2024-02-23","current":84.654001,"twenty":-57.545728,"median":-18.954582,"eighty":55.015272,"marketCap":193773009},{"date":"2024-03-01","current":90.902532,"twenty":-57.443696,"median":-18.93982,"eighty":58.347471,"marketCap":208075895},{"date":"2024-03-08","current":96.064361,"twenty":-57.443696,"median":-18.93982,"eighty":60.142778,"marketCap":219891322},{"date":"2024-03-15","current":96.390371,"twenty":-57.300852,"median":-18.936518,"eighty":62.169298,"marketCap":220637560},{"date":"2024-03-22","current":99.541804,"twenty":-55.831599,"median":-18.899168,"eighty":63.107754,"marketCap":227851189},{"date":"2024-03-28","current":107.36605,"twenty":-55.035754,"median":-18.792199,"eighty":63.951005,"marketCap":245760889},{"date":"2024-04-05","current":61.700672,"twenty":-54.780675,"median":-18.684404,"eighty":64.223021,"marketCap":292893092},{"date":"2024-04-12","current":61.281475,"twenty":-54.025643,"median":-18.516329,"eighty":64.223021,"marketCap":290903160},{"date":"2024-04-19","current":61.255275,"twenty":-53.535892,"median":-18.283848,"eighty":64.223021,"marketCap":290778790},{"date":"2024-04-26","current":63.325064,"twenty":-52.729843,"median":-17.862184,"eighty":64.141416,"marketCap":300604078},{"date":"2024-05-03","current":58.792488,"twenty":-52.158467,"median":-17.552179,"eighty":64.141416,"marketCap":279087940},{"date":"2024-05-10","current":61.595873,"twenty":-51.464654,"median":-17.034202,"eighty":64.141416,"marketCap":292395609},{"date":"2024-05-17","current":31.35849,"twenty":-50.883075,"median":-16.757223,"eighty":64.141416,"marketCap":297121697},{"date":"2024-05-24","current":28.759503,"twenty":-49.219963,"median":-16.507942,"eighty":64.141416,"marketCap":272496291},{"date":"2024-05-31","current":28.56261,"twenty":-47.740506,"median":-16.438697,"eighty":64.141416,"marketCap":270630730},{"date":"2024-06-07","current":26.370535,"twenty":-46.179425,"median":-16.341755,"eighty":64.141416,"marketCap":249860816},{"date":"2024-06-14","current":24.834769,"twenty":-34.866843,"median":-16.092474,"eighty":64.141416,"marketCap":235309440},{"date":"2024-06-21","current":24.821643,"twenty":-34.461801,"median":-15.718552,"eighty":64.223021,"marketCap":235185069},{"date":"2024-06-28","current":26.409913,"twenty":-33.268871,"median":-15.249932,"eighty":64.223021,"marketCap":250233928},{"date":"2024-07-05","current":25.504205,"twenty":-32.797248,"median":-14.85809,"eighty":64.223021,"marketCap":241652347},{"date":"2024-07-12","current":26.738068,"twenty":-32.103684,"median":-14.747373,"eighty":64.223021,"marketCap":253343197},{"date":"2024-07-19","current":26.908709,"twenty":-31.576576,"median":-14.673563,"eighty":64.223021,"marketCap":254960017},{"date":"2024-07-26","current":26.69869,"twenty":-30.406121,"median":-14.570228,"eighty":64.223021,"marketCap":252970085},{"date":"2024-08-02","current":24.217838,"twenty":-30.075723,"median":-14.252842,"eighty":64.223021,"marketCap":229464015},{"date":"2024-08-09","current":25.267934,"twenty":-28.969868,"median":-13.807904,"eighty":64.223021,"marketCap":239413674},{"date":"2024-08-16","current":20.481093,"twenty":-28.308816,"median":-13.071593,"eighty":64.223021,"marketCap":270780525},{"date":"2024-08-23","current":20.462233,"twenty":-28.121992,"median":-12.717153,"eighty":64.223021,"marketCap":270531187},{"date":"2024-08-30","current":20.679114,"twenty":-28.089612,"median":-12.525357,"eighty":64.223021,"marketCap":273398568},{"date":"2024-09-06","current":18.010537,"twenty":-28.030258,"median":-12.436495,"eighty":64.223021,"marketCap":238117312},{"date":"2024-09-13","current":18.434869,"twenty":-27.998127,"median":-12.36378,"eighty":64.223021,"marketCap":243727406},{"date":"2024-09-20","current":18.755476,"twenty":-27.925747,"median":-12.222373,"eighty":64.223021,"marketCap":247966143},{"date":"2024-09-27","current":18.227418,"twenty":-27.545008,"median":-12.098008,"eighty":64.223021,"marketCap":240984693},{"date":"2024-10-04","current":19.057223,"twenty":-27.288894,"median":-12.029304,"eighty":64.223021,"marketCap":251955543},{"date":"2024-10-11","current":19.415548,"twenty":-27.172735,"median":-11.937781,"eighty":64.223021,"marketCap":256692956},{"date":"2024-10-18","current":18.576313,"twenty":-27.015535,"median":-11.822525,"eighty":64.223021,"marketCap":245597437},{"date":"2024-10-25","current":19.085512,"twenty":-26.886355,"median":-11.762006,"eighty":64.223021,"marketCap":252329550},{"date":"2024-11-01","current":18.019967,"twenty":-26.847039,"median":-11.643915,"eighty":64.223021,"marketCap":238241981},{"date":"2024-11-08","current":22.18785,"twenty":-26.818956,"median":-11.601522,"eighty":64.223021,"marketCap":293345568},{"date":"2024-11-15","current":19.374178,"twenty":-26.818956,"median":-11.601522,"eighty":64.223021,"marketCap":311226799},{"date":"2024-11-22","current":21.649382,"twenty":-26.818956,"median":-11.601522,"eighty":64.223021,"marketCap":347775677},{"date":"2024-11-29","current":21.5562,"twenty":-26.818956,"median":-11.601522,"eighty":64.223021,"marketCap":346278795},{"date":"2024-12-06","current":20.181759,"twenty":-26.818956,"median":-11.601522,"eighty":64.223021,"marketCap":324199779},{"date":"2024-12-13","current":20.11488,"twenty":-26.818956,"median":-11.514491,"eighty":64.223021,"marketCap":323125432},{"date":"2024-12-20","current":19.228488,"twenty":-26.818956,"median":-11.369193,"eighty":64.223021,"marketCap":308886429},{"date":"2024-12-27","current":19.803865,"twenty":-26.818956,"median":-11.303781,"eighty":64.223021,"marketCap":318129290},{"date":"2025-01-03","current":21.568874,"twenty":-26.818956,"median":-11.276939,"eighty":64.223021,"marketCap":346482392},{"date":"2025-01-10","current":20.542525,"twenty":-26.818956,"median":-11.219443,"eighty":64.304625,"marketCap":329995126},{"date":"2025-01-17","current":21.763258,"twenty":-26.818956,"median":-11.03577,"eighty":64.304625,"marketCap":349604980},{"date":"2025-01-24","current":21.91099,"twenty":-26.818956,"median":-10.9753,"eighty":64.304625,"marketCap":351978147},{"date":"2025-01-31","current":20.348141,"twenty":-26.818956,"median":-10.91483,"eighty":64.304625,"marketCap":326872538},{"date":"2025-02-07","current":19.904945,"twenty":-26.818956,"median":-10.91483,"eighty":64.304625,"marketCap":319753036},{"date":"2025-02-14","current":21.413367,"twenty":-26.818956,"median":-10.91483,"eighty":64.304625,"marketCap":343984321},{"date":"2025-02-21","current":20.589177,"twenty":-26.818956,"median":-10.885133,"eighty":64.304625,"marketCap":330744547},{"date":"2025-02-28","current":19.990474,"twenty":-26.818956,"median":-10.532245,"eighty":64.304625,"marketCap":321126975},{"date":"2025-03-07","current":16.833674,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":270416142},{"date":"2025-03-14","current":17.603436,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":282781591},{"date":"2025-03-21","current":15.717548,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":270766201},{"date":"2025-03-28","current":15.790146,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":272016853},{"date":"2025-04-04","current":13.031408,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":224492069},{"date":"2025-04-11","current":13.445219,"twenty":-26.818956,"median":-10.532245,"eighty":64.304625,"marketCap":231620787},{"date":"2025-04-17","current":14.149423,"twenty":-26.818956,"median":-10.532245,"eighty":64.304625,"marketCap":243752113},{"date":"2025-04-25","current":14.179506,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":244270352},{"date":"2025-05-02","current":13.845358,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":238513981},{"date":"2025-05-09","current":14.862331,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":256033371},{"date":"2025-05-16","current":18.348898,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":311619334},{"date":"2025-05-23","current":17.743908,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":301344792},{"date":"2025-05-30","current":18.053781,"twenty":-26.818956,"median":-10.675258,"eighty":64.38623,"marketCap":306607362},{"date":"2025-06-06","current":18.216095,"twenty":-26.818956,"median":-10.44363,"eighty":64.38623,"marketCap":309363947},{"date":"2025-06-13","current":18.880109,"twenty":-26.818956,"median":-9.810158,"eighty":64.38623,"marketCap":320640883},{"date":"2025-06-20","current":20.215513,"twenty":-26.818956,"median":-9.810158,"eighty":64.467835,"marketCap":343320054},{"date":"2025-06-27","current":19.529366,"twenty":-26.818956,"median":-9.810158,"eighty":64.467835,"marketCap":331667220},{"date":"2025-07-03","current":18.821085,"twenty":-26.818956,"median":-9.810158,"eighty":64.467835,"marketCap":319638488},{"date":"2025-07-11","current":18.223473,"twenty":-26.818956,"median":-9.810158,"eighty":64.467835,"marketCap":309489246},{"date":"2025-07-18","current":18.134938,"twenty":-26.818956,"median":-9.810158,"eighty":64.467835,"marketCap":307985654},{"date":"2025-07-25","current":17.9136,"twenty":-26.818956,"median":-9.810158,"eighty":64.467835,"marketCap":304226676},{"date":"2025-08-01","current":17.77342,"twenty":-26.818956,"median":-9.810158,"eighty":64.467835,"marketCap":301845989},{"date":"2025-08-08","current":17.758664,"twenty":-26.818956,"median":-9.810158,"eighty":64.467835,"marketCap":301595391},{"date":"2025-08-15","current":17.048757,"twenty":-26.818956,"median":-9.237899,"eighty":64.467835,"marketCap":305530769},{"date":"2025-08-22","current":18.105556,"twenty":-26.818956,"median":13.220164,"eighty":64.467835,"marketCap":324469663},{"date":"2025-08-29","current":18.546472,"twenty":-26.818956,"median":13.445219,"eighty":64.467835,"marketCap":332371321},{"date":"2025-09-05","current":18.966392,"twenty":-26.818956,"median":13.786834,"eighty":64.524283,"marketCap":339896709},{"date":"2025-09-12","current":18.60946,"twenty":-26.818956,"median":13.99064,"eighty":64.467835,"marketCap":333500129},{"date":"2025-09-19","current":19.13436,"twenty":-26.818956,"median":14.608087,"eighty":64.467835,"marketCap":342906864},{"date":"2025-09-26","current":19.890216,"twenty":-26.818956,"median":15.790146,"eighty":64.467835,"marketCap":356452563},{"date":"2025-10-03","current":18.71444,"twenty":-26.818956,"median":16.08054,"eighty":64.467835,"marketCap":335381476},{"date":"2025-10-10","current":18.966392,"twenty":-26.818956,"median":16.378193,"eighty":64.467835,"marketCap":339896709},{"date":"2025-10-17","current":18.259526,"twenty":-26.818956,"median":17.048757,"eighty":64.467835,"marketCap":327228972},{"date":"2025-10-24","current":19.596272,"twenty":-26.818956,"median":17.409051,"eighty":64.467835,"marketCap":351184792},{"date":"2025-10-31","current":19.512288,"twenty":-26.818956,"median":17.611106,"eighty":64.467835,"marketCap":349679714},{"date":"2025-11-07","current":20.198158,"twenty":-26.818956,"median":17.66464,"eighty":64.467835,"marketCap":361971182},{"date":"2025-11-14","current":19.891315,"twenty":-26.818956,"median":17.741625,"eighty":64.467835,"marketCap":371788564},{"date":"2025-11-21","current":20.509976,"twenty":-26.818956,"median":17.741625,"eighty":63.447774,"marketCap":383351968},{"date":"2025-11-28","current":21.007595,"twenty":-26.818956,"median":17.741625,"eighty":63.107754,"marketCap":392652967},{"date":"2025-12-05","current":21.713677,"twenty":-26.818956,"median":17.741625,"eighty":62.329469,"marketCap":405850329},{"date":"2025-12-12","current":22.520627,"twenty":-26.818956,"median":17.741625,"eighty":61.884071,"marketCap":420933030},{"date":"2025-12-19","current":21.370723,"twenty":-26.818956,"median":17.741625,"eighty":61.360074,"marketCap":399440182},{"date":"2025-12-26","current":22.870305,"twenty":-26.818956,"median":17.741625,"eighty":61.255275,"marketCap":427468867},{"date":"2026-01-02","current":22.62822,"twenty":-26.818956,"median":17.741625,"eighty":60.626478,"marketCap":422944057},{"date":"2026-01-09","current":23.462068,"twenty":-26.818956,"median":17.741625,"eighty":60.33828,"marketCap":438529514},{"date":"2026-01-16","current":22.998072,"twenty":-26.818956,"median":17.741625,"eighty":59.657083,"marketCap":429856961},{"date":"2026-01-23","current":23.280504,"twenty":-26.818956,"median":17.741625,"eighty":59.002087,"marketCap":435135906},{"date":"2026-01-30","current":23.213258,"twenty":-26.818956,"median":17.741625,"eighty":59.002087,"marketCap":433879014},{"date":"2026-02-06","current":23.381373,"twenty":-26.818956,"median":17.741625,"eighty":58.211463,"marketCap":437021244},{"date":"2026-02-13","current":24.470755,"twenty":-26.818956,"median":17.741625,"eighty":30.557792,"marketCap":457382889},{"date":"2026-02-20","current":25.250807,"twenty":-26.818956,"median":17.741625,"eighty":28.56261,"marketCap":471962833},{"date":"2026-02-27","current":25.822396,"twenty":-26.818956,"median":17.741625,"eighty":28.090067,"marketCap":482646412},{"date":"2026-03-06","current":25.217184,"twenty":-26.818956,"median":17.741625,"eighty":27.433757,"marketCap":471334387},{"date":"2026-03-13","current":24.322815,"twenty":-26.818956,"median":17.741625,"eighty":26.882456,"marketCap":454617727},{"date":"2026-03-20","current":24.937754,"twenty":-26.818956,"median":17.741625,"eighty":26.567428,"marketCap":496959553},{"date":"2026-03-27","current":25.038818,"twenty":-26.818956,"median":17.741625,"eighty":26.423039,"marketCap":498973573},{"date":"2026-04-02","current":23.617594,"twenty":-26.818956,"median":17.741625,"eighty":26.252399,"marketCap":470651410},{"date":"2026-04-10","current":24.141868,"twenty":-26.818956,"median":17.741625,"eighty":25.858613,"marketCap":481099142},{"date":"2026-04-17","current":24.331364,"twenty":-26.818956,"median":17.741625,"eighty":25.728252,"marketCap":484875430},{"date":"2026-04-24","current":24.255566,"twenty":-26.818956,"median":17.741625,"eighty":25.573587,"marketCap":483364915},{"date":"2026-05-01","current":25.72398,"twenty":-26.818956,"median":17.741625,"eighty":25.464827,"marketCap":512627471},{"date":"2026-05-08","current":25.022244,"twenty":-26.818956,"median":17.741625,"eighty":25.439095,"marketCap":498643286},{"date":"2026-05-15","current":24.282877,"twenty":-26.818956,"median":17.743908,"eighty":25.267934,"marketCap":530265182},{"date":"2026-05-22","current":24.438647,"twenty":-26.678543,"median":17.790045,"eighty":25.267934,"marketCap":533666741},{"date":"2026-05-29","current":23.798258,"twenty":-26.532976,"median":17.836132,"eighty":25.298132,"marketCap":519682556},{"date":"2026-06-05","current":23.86172,"twenty":-26.395618,"median":17.920978,"eighty":25.267934,"marketCap":521068376},{"date":"2026-06-12","current":24.473263,"twenty":-26.212474,"median":17.972624,"eighty":25.267934,"marketCap":534422643},{"date":"2026-06-18","current":24.092491,"twenty":-26.120902,"median":18.019967,"eighty":25.267934,"marketCap":526107722},{"date":"2026-06-26","current":25.021344,"twenty":-26.014891,"median":18.068537,"eighty":25.418922,"marketCap":546391090},{"date":"2026-07-02","current":23.613641,"twenty":-25.937758,"median":18.134938,"eighty":25.418922,"marketCap":515651079},{"date":"2026-07-10","current":23.172434,"twenty":-25.788358,"median":18.202818,"eighty":25.418922,"marketCap":506016450},{"date":"2026-07-17","current":22.917856,"twenty":-25.669697,"median":18.236847,"eighty":25.418922,"marketCap":500457218},{"date":"2026-07-24","current":22.489701,"twenty":-25.60352,"median":18.300971,"eighty":25.418922,"marketCap":491107601},{"date":"2026-07-31","current":20.76551,"twenty":-25.541141,"median":18.364506,"eighty":25.418922,"marketCap":453456440},{"date":"2026-08-07","current":21.06059,"twenty":-25.459739,"median":18.444299,"eighty":25.418922,"marketCap":459900095},{"date":"2026-08-14","current":23.139948,"twenty":-25.378337,"median":18.490482,"eighty":25.418922,"marketCap":473882990},{"date":"2026-08-21","current":22.371555,"twenty":-25.319648,"median":18.525476,"eighty":25.418922,"marketCap":458147083},{"date":"2026-08-26","current":21.647251,"twenty":-25.273878,"median":18.546472,"eighty":25.418922,"marketCap":443314055}],"updateTime":1787863534156},"$inf$@#url:\"https://stock-news.skytigris.cn/v3/notice/important/events/list\",params:#symbol:\"NGS\",pageSize:20,pageCount:8,market:\"us\",,,undefined,":[{"items":[{"cdn_pdf":false,"hasAttachments":true,"id":"14972932","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499122000062-NGS","pdf_url":"","pub_time":1654185600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NGS","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000062/0001084991-22-000062-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 4.01: Changes in Registrant's Certifying Accountant;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-16.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000062/ex161mossadamssecletter.htm","primary":true,"translateUrl":"","linkName":"ex161mossadamssecletter.htm","type":"EX-16.1","id":"NTFILE2A23SrfGyQpb7HNw","market":"us","size":2322},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000062/ngs-20220526.htm","primary":false,"translateUrl":"","linkName":"ngs-20220526.htm","type":"8-K","id":"NTFILE7uoExP4syfCMNaZz","market":"us","size":37189}],"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":"2022-06-03 00:00","pubTimestamp":1654185600,"title_zh":"8-K  - Current report","summary_en":"Item 4.01: Changes in Registrant's Certifying Accountant;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"14887405","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499122000056-NGS","pdf_url":"","pub_time":1652889600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NGS","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000056/0001084991-22-000056-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-10.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000056/ex10151922-retirementagree.htm","primary":true,"translateUrl":"","linkName":"ex10151922-retirementagree.htm","type":"EX-10.1","id":"NTFILEC4n1MrRimSReNdNC","market":"us","size":95714},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000056/ngs-20220517.htm","primary":false,"translateUrl":"","linkName":"ngs-20220517.htm","type":"8-K","id":"NTFILEAiMust2oaXkh9WF2","market":"us","size":44189},{"description":"EX-99.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000056/ex991pressrelease.htm","primary":false,"translateUrl":"","linkName":"ex991pressrelease.htm","type":"EX-99.1","id":"NTFILEGvFLsbYyAsrsjuJp","market":"us","size":12688},{"description":"","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000056/a87554fc6-a2ffx461cxb6ecxd.jpg","primary":false,"translateUrl":"","linkName":"a87554fc6-a2ffx461cxb6ecxd.jpg","type":"GRAPHIC","id":"NTFILE4MPRS9jTKaWpQRLb","market":"us","size":69478}],"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":"2022-05-19 00:00","pubTimestamp":1652889600,"title_zh":"8-K  - Current report","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\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":"14868092","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499122000047-NGS","pdf_url":"","pub_time":1652630400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"NGS","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000047/0001084991-22-000047-index.htm","us_notice_code":"Form 10-Q","us_title_en":"10-Q  - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000047/ngs-20220331.htm","primary":true,"translateUrl":"","linkName":"ngs-20220331.htm","type":"10-Q","id":"NTFILEGWHzUrmptGG6XZKi","market":"us","size":904250},{"description":"EX-31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000047/ngs033122-ex311.htm","primary":false,"translateUrl":"","linkName":"ngs033122-ex311.htm","type":"EX-31.1","id":"NTFILE7MKdnTh3g7nKxxCu","market":"us","size":11778},{"description":"EX-31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000047/ngs033122-ex312.htm","primary":false,"translateUrl":"","linkName":"ngs033122-ex312.htm","type":"EX-31.2","id":"NTFILE2297ckLzyVCkppJD","market":"us","size":10223},{"description":"EX-32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000047/ngs033122-ex321.htm","primary":false,"translateUrl":"","linkName":"ngs033122-ex321.htm","type":"EX-32.1","id":"NTFILE6abbscjiuBMWUvkH","market":"us","size":7235},{"description":"EX-32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000047/ngs033122-ex322.htm","primary":false,"translateUrl":"","linkName":"ngs033122-ex322.htm","type":"EX-32.2","id":"NTFILEDswAiNPx1twkw42f","market":"us","size":7277}],"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":"2022-05-16 00:00","pubTimestamp":1652630400,"title_zh":"10-Q  - Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"14868091","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499122000048-NGS","pdf_url":"","pub_time":1652630400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NGS","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000048/0001084991-22-000048-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000048/ngsq12022earningsreleaseex.htm","primary":true,"translateUrl":"","linkName":"ngsq12022earningsreleaseex.htm","type":"EX-99","id":"NTFILE4w4aJ1QvNUNhewwQ","market":"us","size":219279},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000048/ngs-20220516.htm","primary":false,"translateUrl":"","linkName":"ngs-20220516.htm","type":"8-K","id":"NTFILE8Nz5tsusczGTH5jb","market":"us","size":34080},{"description":"","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000048/image1a.jpg","primary":false,"translateUrl":"","linkName":"image1a.jpg","type":"GRAPHIC","id":"NTFILE5rrDpBe4UQEw98G4","market":"us","size":6502}],"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":"2022-05-16 00:00","pubTimestamp":1652630400,"title_zh":"8-K  - Current report","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":"14784846","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499122000042-NGS","pdf_url":"","pub_time":1651420800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NGS","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000042/0001084991-22-000042-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000042/ngs-20220426.htm","primary":true,"translateUrl":"","linkName":"ngs-20220426.htm","type":"8-K","id":"NTFILEEx4rnztF1XZWrGpn","market":"us","size":36102}],"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":"2022-05-02 00:00","pubTimestamp":1651420800,"title_zh":"8-K  - Current report","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"14778625","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499122000036-NGS","pdf_url":"","pub_time":1651161600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-K/A [Amend]  - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"NGS","title":"10-K/A [Amend]  - Annual report [Section 13 and 15(d), not S-K Item 405]","titleType":"[Rev.]Annual Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000036/0001084991-22-000036-index.htm","us_notice_code":"Form 10-K/A","us_title_en":"10-K/A [Amend]  - 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":"10-K/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000036/ngs-form10xkxayrended12x31.htm","primary":true,"translateUrl":"","linkName":"ngs-form10xkxayrended12x31.htm","type":"10-K/A","id":"NTFILE4UFjyBng6a1UVMvX","market":"us","size":525786},{"description":"EX-31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000036/certificationoftaylorex311.htm","primary":false,"translateUrl":"","linkName":"certificationoftaylorex311.htm","type":"EX-31.1","id":"NTFILEBHDE52aqffa6wncb","market":"us","size":4434},{"description":"EX-31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000036/certificationoffosterex312.htm","primary":false,"translateUrl":"","linkName":"certificationoffosterex312.htm","type":"EX-31.2","id":"NTFILE9dD1Hzvw2beC6yaE","market":"us","size":4385}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"[Rev.]Annual Report","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"[Rev.]Annual Report","pubTime":"2022-04-29 00:00","pubTimestamp":1651161600,"title_zh":"10-K/A [Amend]  - 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":"14411231","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499122000009-NGS","pdf_url":"","pub_time":1647532800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-K  - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"NGS","title":"10-K  - 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/1084991/000108499122000009/0001084991-22-000009-index.htm","us_notice_code":"Form 10-K","us_title_en":"10-K  - 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":"10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000009/ngs-20211231.htm","primary":true,"translateUrl":"","linkName":"ngs-20211231.htm","type":"10-K","id":"NTFILE3JAvt4Tf7bvAsYnQ","market":"us","size":1631862},{"description":"EX-21.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000009/a123121-ngsxex211subsidiar.htm","primary":false,"translateUrl":"","linkName":"a123121-ngsxex211subsidiar.htm","type":"EX-21.1","id":"NTFILEJ4FESzAwxntvhiQX","market":"us","size":3357},{"description":"EX-23.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000009/a123121-ex231mossadamscons.htm","primary":false,"translateUrl":"","linkName":"a123121-ex231mossadamscons.htm","type":"EX-23.1","id":"NTFILE9VrnRHVZxiQRWCMT","market":"us","size":3063},{"description":"EX-31.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000009/a123121-ngsxex311taylor.htm","primary":false,"translateUrl":"","linkName":"a123121-ngsxex311taylor.htm","type":"EX-31.1","id":"NTFILE9pbjRT6f59wE5wAt","market":"us","size":13689},{"description":"EX-31.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000009/a123121-ngsxex312foster.htm","primary":false,"translateUrl":"","linkName":"a123121-ngsxex312foster.htm","type":"EX-31.2","id":"NTFILE645X88xfdbMGmJBc","market":"us","size":12166},{"description":"EX-32.1","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000009/a123121-ngsxex321taylor.htm","primary":false,"translateUrl":"","linkName":"a123121-ngsxex321taylor.htm","type":"EX-32.1","id":"NTFILEFnPX2hsKcAUVc7va","market":"us","size":9059},{"description":"EX-32.2","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000009/a123121-ngsxex322foster.htm","primary":false,"translateUrl":"","linkName":"a123121-ngsxex322foster.htm","type":"EX-32.2","id":"NTFILEFVk8Wy139Vs1kqWt","market":"us","size":9061}],"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":"2022-03-18 00:00","pubTimestamp":1647532800,"title_zh":"10-K  - 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":"14397063","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499122000007-NGS","pdf_url":"","pub_time":1647446400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NGS","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000007/0001084991-22-000007-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000007/a2021q4earningsreleaseex99.htm","primary":true,"translateUrl":"","linkName":"a2021q4earningsreleaseex99.htm","type":"EX-99.1","id":"NTFILEGLz14bERxDzdkGVA","market":"us","size":265992},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000007/q420218k.htm","primary":false,"translateUrl":"","linkName":"q420218k.htm","type":"8-K","id":"NTFILE8YzS9e9P3KJbRfdV","market":"us","size":26147},{"description":"","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499122000007/image1.jpg","primary":false,"translateUrl":"","linkName":"image1.jpg","type":"GRAPHIC","id":"NTFILEBSafXe6KFdH9Qbhq","market":"us","size":61443}],"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":"2022-03-17 00:00","pubTimestamp":1647446400,"title_zh":"8-K  - Current report","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":"14166379","market":"us","labels":[],"media":"sec.gov","original_id":"AN35420422001583-NGS","pdf_url":"","pub_time":1644249600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"SC 13G/A [Amend]  - Statement of acquisition of beneficial ownership by individuals","symbol":"NGS","title":"SC 13G/A [Amend]  - Statement of acquisition of beneficial ownership by individuals","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000035420422001583/0000354204-22-001583-index.htm","us_notice_code":"Form SC 13G/A","us_title_en":"SC 13G/A [Amend]  - Statement of acquisition of beneficial ownership by individuals","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"SEC SCHEDULE 13G","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/354204/000035420422001583/SEC13G_Filing.htm","primary":true,"translateUrl":"","linkName":"SEC13G_Filing.htm","type":"SC 13G/A","id":"NTFILEEhNbTghjS8rnGueW","market":"us","size":17696}],"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":"2022-02-08 00:00","pubTimestamp":1644249600,"title_zh":"SC 13G/A [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":"14166380","market":"us","labels":[],"media":"sec.gov","original_id":"AN102387522000018-NGS","pdf_url":"","pub_time":1643731200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"SC 13G/A [Amend]  - Statement of acquisition of beneficial ownership by individuals","symbol":"NGS","title":"SC 13G/A [Amend]  - Statement of acquisition of beneficial ownership by individuals","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000102387522000018/0001023875-22-000018-index.htm","us_notice_code":"Form SC 13G/A","us_title_en":"SC 13G/A [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/1023875/000102387522000018/natu21a41.htm","primary":true,"translateUrl":"","linkName":"natu21a41.htm","type":"SC 13G/A","id":"NTFILE2Bs8Qgh4RagwBjM7","market":"us","size":91014}],"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":"2022-02-02 00:00","pubTimestamp":1643731200,"title_zh":"SC 13G/A [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":"13912250","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000102-NGS","pdf_url":"","pub_time":1639324800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"CORRESP [Cover] - Correspondence","symbol":"NGS","title":"CORRESP [Cover] - Correspondence","titleType":"Correspondence","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000102/0001084991-21-000102-index.htm","us_notice_code":"Form CORRESP","us_title_en":"CORRESP [Cover] - Correspondence","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000102/filename1.htm","primary":true,"translateUrl":"","linkName":"filename1.htm","type":"CORRESP","id":"NTFILEEBVwZ6DQNP2gkaRt","market":"us","size":6034},{"description":"","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000102/logoforworkiva.jpg","primary":false,"translateUrl":"","linkName":"logoforworkiva.jpg","type":"GRAPHIC","id":"NTFILEVw8TUuLNi93Egw1D","market":"us","size":5992}],"type_name":"Transaction Related","type_name_en":"Transaction Related","titleTypeEn":"Correspondence","us_type":"交易披露","us_type_zh":"交易披露","earn_infos":[],"event_type":"important_notice","event_name":"Correspondence","pubTime":"2021-12-13 00:00","pubTimestamp":1639324800,"title_zh":"CORRESP [Cover] - Correspondence","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"13575658","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000085-NGS","pdf_url":"","pub_time":1633536000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"4  - Statement of changes in beneficial ownership of securities","symbol":"NGS","title":"4  - Statement of changes in beneficial ownership of securities","titleType":"Statement Of Changes In Beneficial Ownership","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000085/0001084991-21-000085-index.htm","us_notice_code":"Form 4","us_title_en":"4  - Statement of changes in beneficial ownership of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 4","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000085/xslF345X03/wf-form4_163364493091051.xml","primary":true,"translateUrl":"","linkName":"wf-form4_163364493091051.html","type":"4","id":"NTFILE6FkPzg5p1rMurqvT","market":"us","size":0}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Statement Of Changes In Beneficial Ownership","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Statement Of Changes In Beneficial Ownership","pubTime":"2021-10-07 00:00","pubTimestamp":1633536000,"title_zh":"4  - 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":"13575660","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000081-NGS","pdf_url":"","pub_time":1631548800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"4  - Statement of changes in beneficial ownership of securities","symbol":"NGS","title":"4  - Statement of changes in beneficial ownership of securities","titleType":"Statement Of Changes In Beneficial Ownership","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000081/0001084991-21-000081-index.htm","us_notice_code":"Form 4","us_title_en":"4  - Statement of changes in beneficial ownership of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 4","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000081/xslF345X03/wf-form4_163165468196222.xml","primary":true,"translateUrl":"","linkName":"wf-form4_163165468196222.html","type":"4","id":"NTFILE7dRA3CT29FLu24VE","market":"us","size":0}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Statement Of Changes In Beneficial Ownership","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Statement Of Changes In Beneficial Ownership","pubTime":"2021-09-14 00:00","pubTimestamp":1631548800,"title_zh":"4  - 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":"13575661","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000079-NGS","pdf_url":"","pub_time":1630252800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"4  - Statement of changes in beneficial ownership of securities","symbol":"NGS","title":"4  - Statement of changes in beneficial ownership of securities","titleType":"Statement Of Changes In Beneficial Ownership","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000079/0001084991-21-000079-index.htm","us_notice_code":"Form 4","us_title_en":"4  - Statement of changes in beneficial ownership of securities","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"FORM 4","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000079/xslF345X03/wf-form4_163035506684421.xml","primary":true,"translateUrl":"","linkName":"wf-form4_163035506684421.html","type":"4","id":"NTFILEGpYQ4tX65XsesqPM","market":"us","size":0}],"type_name":"Financial Report","type_name_en":"Financial Report","titleTypeEn":"Statement Of Changes In Beneficial Ownership","us_type":"财务报告","us_type_zh":"财务报告","earn_infos":[],"event_type":"important_notice","event_name":"Statement Of Changes In Beneficial Ownership","pubTime":"2021-08-30 00:00","pubTimestamp":1630252800,"title_zh":"4  - 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":"12744212","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000057-NGS","pdf_url":null,"pub_time":1620921600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"NGS","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/0001084991-21-000057-index.htm","us_notice_code":"Form 10-Q","us_title_en":"10-Q  - Quarterly report [Sections 13 or 15(d)]","is_important":0,"hasEarnInfos":true,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/ngs-20210331.htm","primary":true,"translateUrl":null,"linkName":"ngs-20210331.htm","type":"10-Q","id":"NTFILE7NxkaHb27AdomU6G","market":"us","size":858719},{"description":"EX-10.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/creditagreementngsandtcb-m.htm","primary":false,"translateUrl":null,"linkName":"creditagreementngsandtcb-m.htm","type":"EX-10.1","id":"NTFILE8dkP2HU7M45orFR7","market":"us","size":1462200},{"description":"EX-10.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/pledgeandsecurityagreement.htm","primary":false,"translateUrl":null,"linkName":"pledgeandsecurityagreement.htm","type":"EX-10.2","id":"NTFILE54q3xwn9NTAASzXK","market":"us","size":742402},{"description":"EX-10.3","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/promissorynote-may2021xex1.htm","primary":false,"translateUrl":null,"linkName":"promissorynote-may2021xex1.htm","type":"EX-10.3","id":"NTFILE84DCWori3UxojsdC","market":"us","size":11581},{"description":"EX-31.1","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/ngs033121-ex311.htm","primary":false,"translateUrl":null,"linkName":"ngs033121-ex311.htm","type":"EX-31.1","id":"NTFILE66cBfYBEEejcaDfx","market":"us","size":11778},{"description":"EX-31.2","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/ngs033121-ex312.htm","primary":false,"translateUrl":null,"linkName":"ngs033121-ex312.htm","type":"EX-31.2","id":"NTFILE8oP1v6yaR9MtDhLb","market":"us","size":10223},{"description":"EX-32.1","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/ngs033121-ex321.htm","primary":false,"translateUrl":null,"linkName":"ngs033121-ex321.htm","type":"EX-32.1","id":"NTFILE9XcbcP8RKCysBb6C","market":"us","size":7235},{"description":"EX-32.2","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/ngs033121-ex322.htm","primary":false,"translateUrl":null,"linkName":"ngs033121-ex322.htm","type":"EX-32.2","id":"NTFILE6sk3fFHmrUj43BoL","market":"us","size":7277},{"description":"","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/image_01.jpg","primary":false,"translateUrl":null,"linkName":"image_01.jpg","type":"GRAPHIC","id":"NTFILEHEv7yUc96rTfJj8M","market":"us","size":301},{"description":"","seq":15,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/image_31.jpg","primary":false,"translateUrl":null,"linkName":"image_31.jpg","type":"GRAPHIC","id":"NTFILEBR4oWqGgeeAiMDDL","market":"us","size":1438},{"description":"","seq":16,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/image_41.jpg","primary":false,"translateUrl":null,"linkName":"image_41.jpg","type":"GRAPHIC","id":"NTFILE6J7x3hxLd8VSYUs5","market":"us","size":19724},{"description":"","seq":17,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/image_51.jpg","primary":false,"translateUrl":null,"linkName":"image_51.jpg","type":"GRAPHIC","id":"NTFILE8yufiEPHAcD4fBdQ","market":"us","size":1505},{"description":"","seq":18,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/image_61.jpg","primary":false,"translateUrl":null,"linkName":"image_61.jpg","type":"GRAPHIC","id":"NTFILEHcrSsoj437f7EE1W","market":"us","size":668},{"description":"","seq":19,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/image_71.jpg","primary":false,"translateUrl":null,"linkName":"image_71.jpg","type":"GRAPHIC","id":"NTFILEDbih4rHdT4tSdiPD","market":"us","size":600},{"description":"","seq":20,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/image_81.jpg","primary":false,"translateUrl":null,"linkName":"image_81.jpg","type":"GRAPHIC","id":"NTFILE2T2nzY7WR4QVSHtS","market":"us","size":1796}],"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":[{"id":88187,"name":"Condensed Consolidated Balance Sheets","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/R2.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":88188,"name":"Condensed Consolidated Balance Sheets (Parentheticals)","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/R3.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":88189,"name":"Condensed Consolidated Statements of Operations","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/R4.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":88190,"name":"Condensed Consolidated Statements of Stockholders' Equity","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/R5.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":88191,"name":"Condensed Consolidated Statements of Cash Flows","name_zh":"简明综合现金流量表","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000057/R6.htm","cdn_url":"https://static.tigerbbs.com/ad089e3fa6158100d1e7db854d0a901e","translation_url":"https://static.tigerbbs.com/1838a387c934e9d489adda5970f6fe6a","translate_status":1}],"event_type":"important_notice","event_name":"Quarterly Report","pubTime":"2021-05-14 00:00","pubTimestamp":1620921600,"title_zh":"10-Q  - Quarterly report [Sections 13 or 15(d","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"12734522","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000052-NGS","pdf_url":null,"pub_time":1620835200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NGS","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000052/0001084991-21-000052-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 2.02: Results of Operations and Financial Condition;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000052/ngsq12021earningsreleaseex.htm","primary":true,"translateUrl":null,"linkName":"ngsq12021earningsreleaseex.htm","type":"EX-99","id":"NTFILEDTNQ4yzYDujeEV1r","market":"us","size":226033},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000052/ngs-20210513.htm","primary":false,"translateUrl":null,"linkName":"ngs-20210513.htm","type":"8-K","id":"NTFILE4yJ7cdsNaEgp6rZY","market":"us","size":33983},{"description":"","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000052/image11a.jpg","primary":false,"translateUrl":null,"linkName":"image11a.jpg","type":"GRAPHIC","id":"NTFILE6G5o78saDhUAHriB","market":"us","size":6502}],"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":"2021-05-13 00:00","pubTimestamp":1620835200,"title_zh":"8-K  - Current report","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":"12734525","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000050-NGS","pdf_url":null,"pub_time":1620662400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NGS","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000050/0001084991-21-000050-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 7.01: Regulation FD Disclosure;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000050/exhibitforfostercfoappoint.htm","primary":true,"translateUrl":null,"linkName":"exhibitforfostercfoappoint.htm","type":"EX-99.1","id":"NTFILEGEvAs6nbQfxDNgXB","market":"us","size":10030},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000050/ngs-20210511.htm","primary":false,"translateUrl":null,"linkName":"ngs-20210511.htm","type":"8-K","id":"NTFILE5M4LvTY6dvmYea7C","market":"us","size":37802}],"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":"2021-05-11 00:00","pubTimestamp":1620662400,"title_zh":"8-K  - Current report","summary_en":"Item 5.02: Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers;\nItem 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":"12508138","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000043-NGS","pdf_url":null,"pub_time":1618416000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"SC 13D  - General statement of acquisition of beneficial ownership","symbol":"NGS","title":"SC 13D  - General statement of acquisition of beneficial ownership","titleType":"Beneficial Ownership Change","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000043/0001084991-21-000043-index.htm","us_notice_code":"Form SC 13D","us_title_en":"SC 13D  - General statement of acquisition of beneficial ownership","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"SC 13D","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000043/a4_14x21schedule13dfilingf.htm","primary":true,"translateUrl":null,"linkName":"a4_14x21schedule13dfilingf.htm","type":"SC 13D","id":"NTFILEFJEMEdYMU5zk1srj","market":"us","size":48289}],"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":"2021-04-15 00:00","pubTimestamp":1618416000,"title_zh":"SC 13D  - General statement of acquisition of beneficial ownership","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0},{"cdn_pdf":false,"hasAttachments":true,"id":"12465458","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000036-NGS","pdf_url":null,"pub_time":1617552000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NGS","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000036/0001084991-21-000036-index.htm","us_notice_code":"Form 8-K","us_title_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","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"EX-99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000036/a4521pressrelease.htm","primary":true,"translateUrl":null,"linkName":"a4521pressrelease.htm","type":"EX-99.1","id":"NTFILEHYzRiVZqcX3d4Z8e","market":"us","size":13197},{"description":"8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000036/ngs-20210405.htm","primary":false,"translateUrl":null,"linkName":"ngs-20210405.htm","type":"8-K","id":"NTFILEttRnZxbDxRngteA7","market":"us","size":36151}],"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":"2021-04-05 00:00","pubTimestamp":1617552000,"title_zh":"8-K  - Current report","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":"12443788","market":"us","labels":[],"media":"sec.gov","original_id":"AN108499121000026-NGS","pdf_url":null,"pub_time":1617120000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-K  - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"NGS","title":"10-K  - 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/1084991/000108499121000026/0001084991-21-000026-index.htm","us_notice_code":"Form 10-K","us_title_en":"10-K  - 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":"10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/ngs-20201231.htm","primary":true,"translateUrl":null,"linkName":"ngs-20201231.htm","type":"10-K","id":"NTFILE6FwrvxystvYhyr91","market":"us","size":1676222},{"description":"EX-21.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/a123120-ngsxex211subsidiar.htm","primary":false,"translateUrl":null,"linkName":"a123120-ngsxex211subsidiar.htm","type":"EX-21.1","id":"NTFILE4vqmfN8CHUPfgbaf","market":"us","size":3308},{"description":"EX-23.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/a123120-ex231bdoconsent.htm","primary":false,"translateUrl":null,"linkName":"a123120-ex231bdoconsent.htm","type":"EX-23.1","id":"NTFILE7nDpF3vKTpB9ywZD","market":"us","size":3290},{"description":"EX-23.2","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/a123120-ex232mossadamscons.htm","primary":false,"translateUrl":null,"linkName":"a123120-ex232mossadamscons.htm","type":"EX-23.2","id":"NTFILEveH563VnWcqSqHQS","market":"us","size":2848},{"description":"EX-31.1","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/a123120-ngsxex311taylor.htm","primary":false,"translateUrl":null,"linkName":"a123120-ngsxex311taylor.htm","type":"EX-31.1","id":"NTFILE4hPj2zGgTur2stx4","market":"us","size":13717},{"description":"EX-31.2","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/a123120-ngsxex312lawrence.htm","primary":false,"translateUrl":null,"linkName":"a123120-ngsxex312lawrence.htm","type":"EX-31.2","id":"NTFILEHTZw32TmFybuMWRd","market":"us","size":12164},{"description":"EX-32.1","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/a123120-ngsxex321taylor.htm","primary":false,"translateUrl":null,"linkName":"a123120-ngsxex321taylor.htm","type":"EX-32.1","id":"NTFILE8SJicC2q7sgteGLW","market":"us","size":9087},{"description":"EX-32.2","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/a123120-ngsxex322lawrence.htm","primary":false,"translateUrl":null,"linkName":"a123120-ngsxex322lawrence.htm","type":"EX-32.2","id":"NTFILE8rH8yx8UvMrZzVEx","market":"us","size":9097},{"description":"","seq":14,"linkUrl":"https://www.sec.gov/Archives/edgar/data/1084991/000108499121000026/ngs-20201231_g1.jpg","primary":false,"translateUrl":null,"linkName":"ngs-20201231_g1.jpg","type":"GRAPHIC","id":"NTFILECtazMnr72KzKiWNb","market":"us","size":90508}],"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":"2021-03-31 00:00","pubTimestamp":1617120000,"title_zh":"10-K  - Annual report [Section 13 and 15(d), not S-K Item 405","summary_en":"","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0}],"pageSize":20,"totalPage":13,"pageCount":8,"totalSize":241,"code":"91000000","status":"200"}]}}