US StockDetailed Quotes

Provided by Tiger Trade Technology Pte. Ltd.

National Presto

151.50

-0.5100-0.34%

Volume:46.85K

Turnover:7.12M

Market Cap:1.08B

PE:25.34

High:154.50

Open:154.50

Low:151.19

Close:152.01

52wk High:158.17

52wk Low:91.28

Shares:7.15M

Float Shares:5.01M

Volume Ratio:0.88

T/O Rate:0.93%

Dividend:1

Dividend Rate:0.66%

EPS(TTM):5.98

EPS(LYR):4.63

ROE:10.90%

ROA:6.54%

PB:2.63

PE(LYR):32.73

Loading ...

Overview Company News Filings

Beneficial Ownership Change

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

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

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

Quarterly Report

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

Major Issues Report

8-K - Current report

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

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

Annual Report

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

Major Issues Report

8-K - Current report

{"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.tigrgood.cn/stock/NPK/filings?page=4"},"companyName":"Tiger Brokers"},"pageData":{"isMobile":false,"isTiger":false,"isTTM":true,"region":"HKG","license":"TBHK","edition":"fundamental","symbol":"NPK","isAnalysisPage":false},"__swrFallback__":{"@#url:\"https://hq.skytigris.cn/stock_info/detail/global\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"NPK\",,,,,undefined,":{"symbol":"NPK","market":"US","secType":"STK","nameCN":"National Presto","latestPrice":151.5,"timestamp":1791565809072,"preClose":152.01,"halted":0,"volume":46851,"delay":0,"changeRate":-0.003355042431418926,"floatShares":5011947,"shares":7151940,"eps":5.978929,"marketStatus":"Trading","change":-0.51,"latestTime":"10-09 13:10:13 EDT","open":154.495,"high":154.495,"low":151.19,"amount":7121732.43012,"amplitude":0.021742,"askPrice":151.88,"askSize":24,"bidPrice":151.18,"bidSize":200,"shortable":3,"etf":0,"ttmEps":5.978929,"tradingStatus":2,"nextMarketStatus":{"tag":"Post-Mkt","tradingStatus":3,"beginTime":1791576000000},"marketStatusCode":2,"adr":0,"adrRate":0,"exchange":"NYSE","adjPreClose":152.01,"dividendRate":0.006601,"preHourTrading":{"tag":"盘前","latestPrice":151.64,"preClose":152.01,"latestTime":"09:25 EDT","volume":3,"amount":454.76000999999997,"timestamp":1791552343631,"change":-0.37,"changeRate":-0.002434,"amplitude":0.000526},"postHourTrading":{"tag":"盘后","latestPrice":152.01,"preClose":152.01,"latestTime":"17:46 EDT","volume":701,"amount":106559.01,"timestamp":1791496001143,"change":0,"changeRate":0,"amplitude":0},"volumeRatio":0.883109},"@#url:\"https://hq.skytigris.cn/stock_info/fundamental/all\",params:#delay:false,,method:\"POST\",data:#items:@#symbol:\"NPK\",,,,,undefined,":{"symbol":"NPK","floatShares":5011947,"roa":"6.54%","roe":"10.90%","lyrEps":4.629075,"volumeRatio":0.883109,"shares":7151940,"dividePrice":1,"high":154.495,"amplitude":0.021742,"preClose":152.01,"low":151.19,"week52Low":91.28,"pbRate":"2.63","psRate":"1.99","week52High":158.17,"institutionHeld":0.6235,"latestPrice":151.5,"committee":0.785714,"eps":5.978929,"divideRate":0.006601,"volume":46851,"delay":0,"ttmEps":5.978929,"open":154.495,"prevYearClose":106.76,"prevWeekClose":150.73,"prevMonthClose":148.16,"prevQuarterClose":148.16,"fiveDayClose":150.73,"twentyDayClose":154.28,"sixtyDayClose":122.08,"dividendPayoutRate":0.21602587990041205,"dividendFrequency":"A","dividendGrowthYears":0,"dividendGrowthRate":-0.7777777777777778,"fiveYearAvgDividendRate":0.04949439624189851},"@#url:\"https://hq.skytigris.cn/fundamental/corporate_actions/details/NPK\",params:#limit:5,,,undefined,":[{"market":"US","date":"2026-07-31","symbol":"NPK","fiscalQuarterEnding":null,"expectedEps":null,"name":null,"time":"Post-Mkt","type":"earning","dateTimestamp":1785470400000,"reportTimeType":"post","actualEps":null},{"market":"US","date":"2026-05-01","symbol":"NPK","fiscalQuarterEnding":null,"expectedEps":null,"name":null,"time":"Post-Mkt","type":"earning","dateTimestamp":1777608000000,"reportTimeType":"post","actualEps":null},{"date":"2026-03-09","symbol":"NPK","amount":1,"announcedDate":"2026-02-27","type":"dividend","lastAmount":null,"market":"US","newRecordDate":"2026-03-09","defaultRemindTime":1773063000000,"name":"National Presto Industries Inc","lastCurrency":null,"lastExecuteDate":null,"recordDate":"2026-03-20","payableDate":"2026-03-09","currency":"USD","dateTimestamp":1773028800000,"payDate":"2026-03-20"},{"market":"US","date":"2026-02-27","symbol":"NPK","fiscalQuarterEnding":null,"expectedEps":null,"name":null,"time":"Post-Mkt","type":"earning","dateTimestamp":1772168400000,"reportTimeType":"post","actualEps":null},{"market":"US","date":"2025-10-24","symbol":"NPK","fiscalQuarterEnding":null,"expectedEps":null,"name":null,"time":"Post-Mkt","type":"earning","dateTimestamp":1761278400000,"reportTimeType":"post","actualEps":null}],"@#url:\"https://hq.skytigris.cn/fundamental/dividend/history\",params:#symbol:\"NPK\",market:\"US\",,,undefined,":[{"executeDate":"2017-02-27","recordDate":"2017-03-01","paymentDate":"2017-03-15","value":4.5,"currency":"USD"},{"executeDate":"2018-02-28","recordDate":"2018-03-01","paymentDate":"2018-03-15","value":5,"currency":"USD"},{"executeDate":"2020-02-28","recordDate":"2020-03-02","paymentDate":"2020-03-13","value":5,"currency":"USD"},{"executeDate":"2021-02-26","recordDate":"2021-03-01","paymentDate":"2021-03-12","value":5.25,"currency":"USD"},{"executeDate":"2022-02-28","recordDate":"2022-03-01","paymentDate":"2022-03-15","value":4.5,"currency":"USD"}],"@#url:\"https://hq.skytigris.cn/fundamental/estimate/recommendation\",params:#symbol:\"NPK\",market:\"US\",delay:false,,,undefined,":{"strongBuy":0,"buy":0,"hold":1,"sell":0,"strongSell":0,"meanLabel":"HOLD","meanPercent":1,"analysts":1,"updateTime":1791432000000},"@#url:\"https://hq.skytigris.cn/value_analysis/stock/NPK\",params:#withQuantilePoint:true,period:\"5year\",factor:\"peRate\",delay:false,algorithm:1,,,undefined,":{"brief":{"id":"NPK","date":"2026-10-08","current":25.338986,"percent":0.78905,"low":12.95143,"twenty":16.265051,"median":20.567496,"eighty":24.775273,"high":32.458447,"avg":21.02398,"sd":4.574842,"marketCap":1053854374},"quantilePoints":[{"date":"2021-10-15","current":13.167182,"twenty":13.554973,"median":17.455768,"eighty":19.219015,"marketCap":584148854},{"date":"2021-10-22","current":13.205256,"twenty":13.51259,"median":17.455768,"eighty":19.219015,"marketCap":585837959},{"date":"2021-10-29","current":13.190978,"twenty":13.475328,"median":17.455337,"eighty":19.219015,"marketCap":585204544},{"date":"2021-11-05","current":14.011151,"twenty":13.47258,"median":17.455337,"eighty":19.219015,"marketCap":621590684},{"date":"2021-11-12","current":17.31656,"twenty":13.47258,"median":17.448341,"eighty":19.219015,"marketCap":629543554},{"date":"2021-11-19","current":16.729985,"twenty":13.47258,"median":17.448341,"eighty":19.219015,"marketCap":608218601},{"date":"2021-11-26","current":16.047329,"twenty":13.47258,"median":17.445752,"eighty":19.219015,"marketCap":583400656},{"date":"2021-12-03","current":15.909842,"twenty":13.47258,"median":17.425606,"eighty":19.219015,"marketCap":578402292},{"date":"2021-12-10","current":16.0086,"twenty":13.473006,"median":17.360143,"eighty":19.21816,"marketCap":581992666},{"date":"2021-12-17","current":15.704578,"twenty":13.473006,"median":17.273857,"eighty":19.215702,"marketCap":570939945},{"date":"2021-12-23","current":15.92146,"twenty":13.473006,"median":17.224584,"eighty":19.205228,"marketCap":578824689},{"date":"2021-12-31","current":15.884668,"twenty":13.473006,"median":17.184504,"eighty":19.183992,"marketCap":577487098},{"date":"2022-01-07","current":16.173198,"twenty":13.473431,"median":17.150039,"eighty":19.1741,"marketCap":587976624},{"date":"2022-01-14","current":16.953586,"twenty":13.473431,"median":17.117631,"eighty":19.163217,"marketCap":616347622},{"date":"2022-01-21","current":15.998918,"twenty":13.473431,"median":16.982061,"eighty":19.159377,"marketCap":581640669},{"date":"2022-01-28","current":15.896286,"twenty":13.473431,"median":16.904231,"eighty":19.153221,"marketCap":577909495},{"date":"2022-02-04","current":15.849812,"twenty":13.473431,"median":16.849887,"eighty":19.142253,"marketCap":576219907},{"date":"2022-02-11","current":16.022155,"twenty":13.473431,"median":16.799263,"eighty":19.126104,"marketCap":582485463},{"date":"2022-02-18","current":15.328908,"twenty":13.473431,"median":16.645474,"eighty":19.100977,"marketCap":557282442},{"date":"2022-02-25","current":16.169325,"twenty":13.473431,"median":16.623403,"eighty":19.071317,"marketCap":587835825},{"date":"2022-03-04","current":15.752989,"twenty":13.473431,"median":16.581293,"eighty":19.071317,"marketCap":572699932},{"date":"2022-03-11","current":21.852,"twenty":13.473431,"median":16.518459,"eighty":19.074144,"marketCap":560591218},{"date":"2022-03-18","current":21.160617,"twenty":13.473431,"median":16.518459,"eighty":19.108887,"marketCap":542854476},{"date":"2022-03-25","current":21.761834,"twenty":13.473431,"median":16.518459,"eighty":19.134474,"marketCap":558278079},{"date":"2022-04-01","current":21.468089,"twenty":13.473431,"median":16.518459,"eighty":19.14566,"marketCap":550742346},{"date":"2022-04-08","current":21.23474,"twenty":13.473431,"median":16.518459,"eighty":19.155644,"marketCap":544756016},{"date":"2022-04-14","current":21.275919,"twenty":13.473431,"median":16.518459,"eighty":19.15979,"marketCap":545812427},{"date":"2022-04-22","current":21.130812,"twenty":13.473431,"median":16.518459,"eighty":19.17326,"marketCap":542089850},{"date":"2022-04-29","current":19.624424,"twenty":13.473431,"median":16.518459,"eighty":19.173399,"marketCap":503444980},{"date":"2022-05-06","current":20.112759,"twenty":13.473431,"median":16.518459,"eighty":19.181103,"marketCap":515972713},{"date":"2022-05-13","current":25.330595,"twenty":13.473431,"median":16.518459,"eighty":19.190991,"marketCap":495871718},{"date":"2022-05-20","current":23.902449,"twenty":13.473431,"median":16.518459,"eighty":19.215452,"marketCap":467914349},{"date":"2022-05-27","current":24.649846,"twenty":13.473431,"median":16.518459,"eighty":19.233787,"marketCap":482545395},{"date":"2022-06-03","current":24.912884,"twenty":13.473431,"median":16.518459,"eighty":19.240289,"marketCap":487694615},{"date":"2022-06-10","current":24.094946,"twenty":13.473431,"median":16.518459,"eighty":19.260204,"marketCap":471682657},{"date":"2022-06-17","current":22.405021,"twenty":13.473431,"median":16.518459,"eighty":19.260204,"marketCap":438600682},{"date":"2022-06-24","current":23.648142,"twenty":13.473006,"median":16.51516,"eighty":19.260614,"marketCap":462936037},{"date":"2022-07-01","current":23.824702,"twenty":13.473006,"median":16.51516,"eighty":19.272689,"marketCap":466392363},{"date":"2022-07-08","current":23.813892,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":466180751},{"date":"2022-07-15","current":24.062516,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":471047822},{"date":"2022-07-22","current":24.923694,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":487906227},{"date":"2022-07-29","current":25.655154,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":502225291},{"date":"2022-08-05","current":26.646048,"twenty":13.473006,"median":16.51516,"eighty":19.278159,"marketCap":521623037},{"date":"2022-08-12","current":31.839043,"twenty":13.473006,"median":16.51516,"eighty":19.281889,"marketCap":540244874},{"date":"2022-08-19","current":31.535576,"twenty":13.473006,"median":16.51516,"eighty":19.308689,"marketCap":535095654},{"date":"2022-08-26","current":29.56205,"twenty":13.473006,"median":16.51516,"eighty":19.331788,"marketCap":501608858},{"date":"2022-09-02","current":27.894298,"twenty":13.473006,"median":16.51516,"eighty":19.350096,"marketCap":473310441},{"date":"2022-09-09","current":27.648918,"twenty":13.473006,"median":16.51516,"eighty":19.384475,"marketCap":469146833},{"date":"2022-09-16","current":27.553261,"twenty":13.473006,"median":16.51516,"eighty":19.407327,"marketCap":467523732},{"date":"2022-09-23","current":27.237178,"twenty":13.473006,"median":16.51516,"eighty":19.420234,"marketCap":462160441},{"date":"2022-09-30","current":27.054183,"twenty":13.473006,"median":16.51516,"eighty":19.472715,"marketCap":459055378},{"date":"2022-10-07","current":26.729782,"twenty":13.473006,"median":16.51516,"eighty":19.49597,"marketCap":453550947},{"date":"2022-10-14","current":26.754736,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":453974365},{"date":"2022-10-21","current":28.626279,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":485730694},{"date":"2022-10-28","current":29.250126,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":496316137},{"date":"2022-11-04","current":29.033859,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":492646517},{"date":"2022-11-11","current":28.8675,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":489823732},{"date":"2022-11-18","current":22.303061,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":485448415},{"date":"2022-11-25","current":22.757701,"twenty":13.473006,"median":16.51516,"eighty":19.501365,"marketCap":495344123},{"date":"2022-12-02","current":22.874474,"twenty":13.473006,"median":16.51516,"eighty":19.547891,"marketCap":497885797},{"date":"2022-12-09","current":22.553349,"twenty":13.473006,"median":16.51516,"eighty":19.593234,"marketCap":490896192},{"date":"2022-12-16","current":21.700259,"twenty":13.473006,"median":16.51516,"eighty":19.634615,"marketCap":472327848},{"date":"2022-12-23","current":22.417114,"twenty":13.473006,"median":16.51516,"eighty":19.687799,"marketCap":487930905},{"date":"2022-12-30","current":22.206275,"twenty":13.473006,"median":16.51516,"eighty":19.787111,"marketCap":483341771},{"date":"2023-01-06","current":22.926373,"twenty":13.494691,"median":16.573277,"eighty":19.816189,"marketCap":499015430},{"date":"2023-01-13","current":23.305884,"twenty":13.538867,"median":16.623377,"eighty":19.868199,"marketCap":507275872},{"date":"2023-01-20","current":23.046389,"twenty":13.561656,"median":16.639515,"eighty":19.910798,"marketCap":501627707},{"date":"2023-01-27","current":23.688639,"twenty":13.581928,"median":16.798794,"eighty":19.973923,"marketCap":515606917},{"date":"2023-02-03","current":24.684451,"twenty":13.618976,"median":16.847828,"eighty":20.049274,"marketCap":537281752},{"date":"2023-02-10","current":23.82163,"twenty":13.663553,"median":16.901937,"eighty":20.161767,"marketCap":518501602},{"date":"2023-02-17","current":24.872584,"twenty":13.698901,"median":17.019398,"eighty":20.243446,"marketCap":541376672},{"date":"2023-02-24","current":24.836904,"twenty":13.712844,"median":17.12639,"eighty":20.273838,"marketCap":540600049},{"date":"2023-03-03","current":23.769731,"twenty":13.735116,"median":17.176488,"eighty":20.322102,"marketCap":517371968},{"date":"2023-03-10","current":23.902722,"twenty":13.747506,"median":17.224584,"eighty":20.42079,"marketCap":520266653},{"date":"2023-03-17","current":25.438811,"twenty":13.769629,"median":17.312761,"eighty":20.533282,"marketCap":526557952},{"date":"2023-03-24","current":24.162263,"twenty":13.784322,"median":17.449002,"eighty":20.731453,"marketCap":500134677},{"date":"2023-03-31","current":24.605983,"twenty":13.793216,"median":17.568531,"eighty":21.126106,"marketCap":509319238},{"date":"2023-04-06","current":24.117891,"twenty":13.823314,"median":17.639418,"eighty":21.154029,"marketCap":499216221},{"date":"2023-04-14","current":24.210048,"twenty":13.881139,"median":17.758725,"eighty":21.239132,"marketCap":501123783},{"date":"2023-04-21","current":24.356817,"twenty":13.909758,"median":17.806753,"eighty":21.314353,"marketCap":504161753},{"date":"2023-04-28","current":23.455724,"twenty":13.978161,"median":17.847203,"eighty":21.468089,"marketCap":485510029},{"date":"2023-05-05","current":23.26117,"twenty":14.016436,"median":17.919348,"eighty":21.652254,"marketCap":481482953},{"date":"2023-05-12","current":24.595743,"twenty":14.041326,"median":17.988502,"eighty":21.761834,"marketCap":509107286},{"date":"2023-05-19","current":19.954555,"twenty":14.041326,"median":18.05425,"eighty":21.761834,"marketCap":532028335},{"date":"2023-05-26","current":20.119117,"twenty":14.041326,"median":18.092327,"eighty":21.761834,"marketCap":536415906},{"date":"2023-06-02","current":20.246521,"twenty":14.041326,"median":18.135413,"eighty":21.761834,"marketCap":539812735},{"date":"2023-06-09","current":21.807212,"twenty":14.040743,"median":18.212568,"eighty":21.80723,"marketCap":581423890},{"date":"2023-06-16","current":21.079951,"twenty":14.040743,"median":18.212568,"eighty":21.80723,"marketCap":562033658},{"date":"2023-06-23","current":19.776721,"twenty":14.040161,"median":18.20856,"eighty":21.807248,"marketCap":527286928},{"date":"2023-06-30","current":19.370622,"twenty":14.038996,"median":18.191367,"eighty":21.807283,"marketCap":516459536},{"date":"2023-07-07","current":19.981097,"twenty":14.038996,"median":18.191367,"eighty":21.807283,"marketCap":532736008},{"date":"2023-07-14","current":20.387195,"twenty":14.038996,"median":18.191367,"eighty":21.807283,"marketCap":543563400},{"date":"2023-07-21","current":20.437626,"twenty":14.038996,"median":18.191367,"eighty":21.807283,"marketCap":544907979},{"date":"2023-07-28","current":20.238558,"twenty":14.038996,"median":18.220673,"eighty":21.807283,"marketCap":539600433},{"date":"2023-08-04","current":21.13569,"twenty":14.038996,"median":18.220673,"eighty":21.807283,"marketCap":563519771},{"date":"2023-08-11","current":21.093222,"twenty":14.038996,"median":18.220673,"eighty":21.807283,"marketCap":562387494},{"date":"2023-08-18","current":20.948396,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":533786081},{"date":"2023-08-25","current":20.262156,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":516299985},{"date":"2023-09-01","current":20.795589,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":529892416},{"date":"2023-09-08","current":19.887085,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":506742807},{"date":"2023-09-15","current":21.242896,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":541290235},{"date":"2023-09-22","current":20.615,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":525290812},{"date":"2023-09-29","current":20.120462,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":512689496},{"date":"2023-10-06","current":20.103792,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":512264732},{"date":"2023-10-13","current":20.601108,"twenty":14.038996,"median":18.220673,"eighty":21.807301,"marketCap":524936842},{"date":"2023-10-20","current":20.517759,"twenty":14.038996,"median":18.253441,"eighty":21.807301,"marketCap":522813025},{"date":"2023-10-27","current":20.281604,"twenty":14.037157,"median":18.216576,"eighty":21.808599,"marketCap":516795543},{"date":"2023-11-03","current":21.276236,"twenty":14.037157,"median":18.216576,"eighty":21.808599,"marketCap":542139762},{"date":"2023-11-10","current":21.879127,"twenty":14.037157,"median":18.216576,"eighty":21.852171,"marketCap":557502041},{"date":"2023-11-17","current":23.82835,"twenty":14.037157,"median":18.216576,"eighty":21.920006,"marketCap":561705699},{"date":"2023-11-24","current":23.19441,"twenty":14.037157,"median":18.216576,"eighty":22.052115,"marketCap":546761820},{"date":"2023-12-01","current":22.449304,"twenty":14.037157,"median":18.216576,"eighty":22.148353,"marketCap":529197451},{"date":"2023-12-08","current":23.521896,"twenty":14.037785,"median":18.219582,"eighty":22.256227,"marketCap":554481644},{"date":"2023-12-15","current":24.49534,"twenty":14.037785,"median":18.219582,"eighty":22.345753,"marketCap":577428642},{"date":"2023-12-22","current":24.122787,"twenty":14.037785,"median":18.291727,"eighty":22.417763,"marketCap":568646458},{"date":"2023-12-29","current":24.456282,"twenty":14.037157,"median":18.304753,"eighty":22.464685,"marketCap":576507929},{"date":"2024-01-05","current":24.071711,"twenty":14.03653,"median":18.336818,"eighty":22.501965,"marketCap":567442448},{"date":"2024-01-12","current":24.267001,"twenty":14.03653,"median":18.336818,"eighty":22.63398,"marketCap":572046013},{"date":"2024-01-19","current":24.888924,"twenty":14.035902,"median":18.336818,"eighty":22.708476,"marketCap":586706595},{"date":"2024-01-26","current":25.0752,"twenty":14.03653,"median":18.336818,"eighty":22.903182,"marketCap":591097688},{"date":"2024-02-02","current":23.74723,"twenty":14.03653,"median":18.336818,"eighty":23.017494,"marketCap":559793449},{"date":"2024-02-09","current":22.984098,"twenty":14.03653,"median":18.336818,"eighty":23.07688,"marketCap":541804135},{"date":"2024-02-16","current":23.557949,"twenty":14.03653,"median":18.336818,"eighty":23.1039,"marketCap":555331532},{"date":"2024-02-23","current":23.684136,"twenty":14.03653,"median":18.336818,"eighty":23.184764,"marketCap":558306143},{"date":"2024-03-01","current":23.233468,"twenty":14.037157,"median":18.352877,"eighty":23.214181,"marketCap":547682533},{"date":"2024-03-08","current":22.764772,"twenty":14.037157,"median":18.439023,"eighty":23.214181,"marketCap":536633978},{"date":"2024-03-15","current":22.551456,"twenty":14.037157,"median":18.558425,"eighty":23.214181,"marketCap":531605469},{"date":"2024-03-22","current":16.448219,"twenty":14.037157,"median":18.439023,"eighty":23.214181,"marketCap":568433985},{"date":"2024-03-28","current":16.776117,"twenty":14.037157,"median":18.366878,"eighty":23.214181,"marketCap":579765837},{"date":"2024-04-05","current":16.933919,"twenty":14.03653,"median":18.312769,"eighty":23.215053,"marketCap":585219290},{"date":"2024-04-12","current":16.343701,"twenty":14.03653,"median":18.219582,"eighty":23.215053,"marketCap":564821958},{"date":"2024-04-19","current":16.488876,"twenty":14.03653,"median":18.135413,"eighty":23.215053,"marketCap":569839081},{"date":"2024-04-26","current":17.099041,"twenty":14.037157,"median":18.084311,"eighty":23.214181,"marketCap":590925763},{"date":"2024-05-03","current":17.266012,"twenty":14.037157,"median":18.032206,"eighty":23.214181,"marketCap":596696105},{"date":"2024-05-10","current":17.696838,"twenty":14.037157,"median":17.919981,"eighty":23.214181,"marketCap":611585012},{"date":"2024-05-17","current":17.998832,"twenty":14.037157,"median":17.853848,"eighty":23.214181,"marketCap":580444344},{"date":"2024-05-24","current":16.495628,"twenty":14.037157,"median":17.772885,"eighty":23.214181,"marketCap":531967518},{"date":"2024-05-31","current":16.392187,"twenty":14.037157,"median":17.690709,"eighty":23.214181,"marketCap":528631631},{"date":"2024-06-07","current":16.317357,"twenty":14.037157,"median":17.66547,"eighty":23.214181,"marketCap":526218436},{"date":"2024-06-14","current":16.337165,"twenty":14.037157,"median":17.55124,"eighty":23.214181,"marketCap":526857223},{"date":"2024-06-21","current":16.167697,"twenty":14.03653,"median":17.342282,"eighty":23.215053,"marketCap":521392046},{"date":"2024-06-28","current":16.535244,"twenty":14.03653,"median":17.259327,"eighty":23.215053,"marketCap":533245092},{"date":"2024-07-05","current":15.494226,"twenty":14.03653,"median":17.22258,"eighty":23.215053,"marketCap":499673292},{"date":"2024-07-12","current":16.354772,"twenty":14.03653,"median":17.175091,"eighty":23.215053,"marketCap":527425033},{"date":"2024-07-19","current":16.526441,"twenty":14.03653,"median":17.134494,"eighty":23.215053,"marketCap":532961186},{"date":"2024-07-26","current":17.14709,"twenty":14.03653,"median":17.117631,"eighty":23.215053,"marketCap":552976509},{"date":"2024-08-02","current":16.376781,"twenty":14.03653,"median":17.086593,"eighty":23.215053,"marketCap":528134797},{"date":"2024-08-09","current":15.753054,"twenty":14.03653,"median":16.988788,"eighty":23.215053,"marketCap":517062491},{"date":"2024-08-16","current":15.836972,"twenty":14.03653,"median":16.941976,"eighty":23.215053,"marketCap":519816916},{"date":"2024-08-23","current":16.083579,"twenty":14.03653,"median":16.901544,"eighty":23.215053,"marketCap":527911319},{"date":"2024-08-30","current":16.93589,"twenty":14.03653,"median":16.875207,"eighty":23.215053,"marketCap":555886714},{"date":"2024-09-06","current":15.999213,"twenty":14.03653,"median":16.849887,"eighty":23.215053,"marketCap":525142181},{"date":"2024-09-13","current":16.589774,"twenty":14.03653,"median":16.815688,"eighty":23.215053,"marketCap":544526148},{"date":"2024-09-20","current":16.061947,"twenty":14.03653,"median":16.774068,"eighty":23.215053,"marketCap":527201284},{"date":"2024-09-27","current":16.100885,"twenty":14.03653,"median":16.662787,"eighty":23.215053,"marketCap":528479348},{"date":"2024-10-04","current":15.553589,"twenty":14.03653,"median":16.615625,"eighty":23.215053,"marketCap":510515452},{"date":"2024-10-11","current":15.380531,"twenty":14.03653,"median":16.595847,"eighty":23.215053,"marketCap":504835169},{"date":"2024-10-18","current":16.079253,"twenty":14.03653,"median":16.579362,"eighty":23.215053,"marketCap":527769312},{"date":"2024-10-25","current":16.157129,"twenty":14.03653,"median":16.533305,"eighty":23.215053,"marketCap":530325440},{"date":"2024-11-01","current":15.713668,"twenty":14.03653,"median":16.509506,"eighty":23.215053,"marketCap":515769714},{"date":"2024-11-08","current":16.006021,"twenty":14.03653,"median":16.488489,"eighty":23.215053,"marketCap":542396042},{"date":"2024-11-15","current":15.934781,"twenty":14.03653,"median":16.428941,"eighty":23.215053,"marketCap":539981921},{"date":"2024-11-22","current":16.48375,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":558584849},{"date":"2024-11-29","current":16.703757,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":566040220},{"date":"2024-12-06","current":18.551815,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":628665343},{"date":"2024-12-13","current":19.482129,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":660190914},{"date":"2024-12-20","current":19.580609,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":663528081},{"date":"2024-12-27","current":20.366347,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":690154408},{"date":"2025-01-03","current":20.137959,"twenty":14.03653,"median":16.40645,"eighty":23.215053,"marketCap":682415022},{"date":"2025-01-10","current":19.961954,"twenty":14.035902,"median":16.405392,"eighty":23.215926,"marketCap":676450725},{"date":"2025-01-17","current":20.42292,"twenty":14.035902,"median":16.405392,"eighty":23.215926,"marketCap":692071504},{"date":"2025-01-24","current":20.531876,"twenty":14.035902,"median":16.405392,"eighty":23.215926,"marketCap":695763688},{"date":"2025-01-31","current":20.150531,"twenty":14.035902,"median":16.422999,"eighty":23.215926,"marketCap":682841044},{"date":"2025-02-07","current":20.542353,"twenty":14.035902,"median":16.452321,"eighty":23.215926,"marketCap":696118706},{"date":"2025-02-14","current":20.823123,"twenty":14.035902,"median":16.488876,"eighty":23.215926,"marketCap":705633180},{"date":"2025-02-21","current":20.747692,"twenty":14.035902,"median":16.517637,"eighty":23.215926,"marketCap":703077053},{"date":"2025-02-28","current":21.317615,"twenty":14.038996,"median":16.585447,"eighty":23.215926,"marketCap":722390015},{"date":"2025-03-07","current":18.635627,"twenty":14.055681,"median":16.622977,"eighty":23.216798,"marketCap":631505484},{"date":"2025-03-14","current":15.243669,"twenty":14.075231,"median":16.691997,"eighty":23.216798,"marketCap":632002509},{"date":"2025-03-21","current":15.400014,"twenty":14.096495,"median":16.691997,"eighty":23.216798,"marketCap":638484599},{"date":"2025-03-28","current":15.136398,"twenty":14.197457,"median":16.691997,"eighty":23.216798,"marketCap":627555069},{"date":"2025-04-04","current":14.200819,"twenty":14.246365,"median":16.691997,"eighty":23.216798,"marketCap":588765951},{"date":"2025-04-11","current":14.479942,"twenty":14.250049,"median":16.683896,"eighty":23.215926,"marketCap":600338395},{"date":"2025-04-17","current":14.342103,"twenty":14.290517,"median":16.683896,"eighty":23.215926,"marketCap":594623608},{"date":"2025-04-25","current":14.521294,"twenty":14.281613,"median":16.691997,"eighty":23.216798,"marketCap":602052831},{"date":"2025-05-02","current":14.799891,"twenty":14.306843,"median":16.691997,"eighty":23.216798,"marketCap":613603485},{"date":"2025-05-09","current":13.625186,"twenty":14.321428,"median":16.691997,"eighty":23.216798,"marketCap":579097665},{"date":"2025-05-16","current":14.658806,"twenty":14.342103,"median":16.691997,"eighty":23.216798,"marketCap":623028571},{"date":"2025-05-23","current":14.088732,"twenty":14.353936,"median":16.691997,"eighty":23.216798,"marketCap":598799285},{"date":"2025-05-30","current":14.483916,"twenty":14.3847,"median":16.691997,"eighty":23.216798,"marketCap":615595398},{"date":"2025-06-06","current":14.5495,"twenty":14.396597,"median":16.691997,"eighty":23.216798,"marketCap":618382838},{"date":"2025-06-13","current":16.074742,"twenty":14.401516,"median":16.701928,"eighty":23.216798,"marketCap":683208686},{"date":"2025-06-20","current":15.627427,"twenty":14.445304,"median":16.703757,"eighty":23.220132,"marketCap":664196916},{"date":"2025-06-27","current":16.363983,"twenty":14.469947,"median":16.703757,"eighty":23.220132,"marketCap":695502011},{"date":"2025-07-03","current":18.212099,"twenty":14.490443,"median":16.750259,"eighty":23.220132,"marketCap":774050640},{"date":"2025-07-11","current":17.633617,"twenty":14.515613,"median":16.801551,"eighty":23.220132,"marketCap":749463990},{"date":"2025-07-18","current":18.538336,"twenty":14.544479,"median":16.851946,"eighty":23.220132,"marketCap":787916367},{"date":"2025-07-25","current":17.616801,"twenty":14.586038,"median":16.890335,"eighty":23.220132,"marketCap":748749262},{"date":"2025-08-01","current":16.219363,"twenty":14.607401,"median":16.90115,"eighty":23.220132,"marketCap":689355348},{"date":"2025-08-08","current":16.765894,"twenty":14.66492,"median":16.90115,"eighty":23.220132,"marketCap":712584015},{"date":"2025-08-15","current":17.845879,"twenty":14.706442,"median":16.962216,"eighty":23.220132,"marketCap":741978119},{"date":"2025-08-22","current":18.071145,"twenty":14.746918,"median":17.013844,"eighty":23.220132,"marketCap":751344002},{"date":"2025-08-29","current":18.320485,"twenty":14.798244,"median":17.105225,"eighty":23.220132,"marketCap":761710819},{"date":"2025-09-05","current":18.703953,"twenty":14.854363,"median":17.135366,"eighty":23.223466,"marketCap":777654269},{"date":"2025-09-12","current":19.476048,"twenty":14.891323,"median":17.188907,"eighty":23.220132,"marketCap":809755654},{"date":"2025-09-19","current":19.850918,"twenty":14.964442,"median":17.31656,"eighty":23.220132,"marketCap":825341627},{"date":"2025-09-26","current":19.128691,"twenty":14.98451,"median":17.484766,"eighty":23.220132,"marketCap":795313605},{"date":"2025-10-03","current":19.837162,"twenty":15.058133,"median":17.624682,"eighty":23.220132,"marketCap":824769665},{"date":"2025-10-10","current":19.324724,"twenty":15.112543,"median":17.678285,"eighty":23.220132,"marketCap":803464069},{"date":"2025-10-17","current":18.872473,"twenty":15.134674,"median":17.774874,"eighty":23.220132,"marketCap":784660807},{"date":"2025-10-24","current":19.434778,"twenty":15.172357,"median":17.803462,"eighty":23.220132,"marketCap":808039767},{"date":"2025-10-31","current":18.146807,"twenty":15.230807,"median":17.895391,"eighty":23.220132,"marketCap":754489795},{"date":"2025-11-07","current":18.406465,"twenty":15.248301,"median":18.024716,"eighty":23.220132,"marketCap":765285584},{"date":"2025-11-14","current":17.340382,"twenty":15.276092,"median":18.071145,"eighty":23.220132,"marketCap":672997554},{"date":"2025-11-21","current":17.211388,"twenty":15.304509,"median":18.071145,"eighty":23.220132,"marketCap":667991196},{"date":"2025-11-28","current":17.2722,"twenty":15.330046,"median":18.071145,"eighty":23.220132,"marketCap":670351336},{"date":"2025-12-05","current":17.554142,"twenty":15.356211,"median":18.071145,"eighty":23.220132,"marketCap":681293804},{"date":"2025-12-12","current":19.424544,"twenty":15.38986,"median":18.237806,"eighty":23.220132,"marketCap":753885995},{"date":"2025-12-19","current":19.42823,"twenty":15.399348,"median":18.320485,"eighty":23.220132,"marketCap":754029034},{"date":"2025-12-26","current":20.226146,"twenty":15.424088,"median":18.406465,"eighty":23.220132,"marketCap":784996934},{"date":"2026-01-02","current":19.673317,"twenty":15.473656,"median":18.458052,"eighty":23.220132,"marketCap":763541114},{"date":"2026-01-09","current":21.591631,"twenty":15.524678,"median":18.551815,"eighty":23.220132,"marketCap":837992809},{"date":"2026-01-16","current":21.962026,"twenty":15.558194,"median":18.635627,"eighty":23.220132,"marketCap":852368209},{"date":"2026-01-23","current":22.538811,"twenty":15.567419,"median":18.731467,"eighty":23.220132,"marketCap":874753781},{"date":"2026-01-30","current":23.09901,"twenty":15.587228,"median":18.870753,"eighty":23.220132,"marketCap":896495679},{"date":"2026-02-06","current":24.661671,"twenty":15.668368,"median":18.962494,"eighty":23.278304,"marketCap":957144130},{"date":"2026-02-13","current":22.367434,"twenty":15.704578,"median":19.039273,"eighty":23.33946,"marketCap":868102477},{"date":"2026-02-20","current":23.412279,"twenty":15.720164,"median":19.128691,"eighty":23.396272,"marketCap":908653977},{"date":"2026-02-27","current":24.606389,"twenty":15.720164,"median":19.192316,"eighty":23.414142,"marketCap":954998548},{"date":"2026-03-06","current":24.96757,"twenty":15.724879,"median":19.301933,"eighty":23.449443,"marketCap":969016350},{"date":"2026-03-13","current":24.427641,"twenty":15.724879,"median":19.364792,"eighty":23.476787,"marketCap":948061166},{"date":"2026-03-20","current":28.952783,"twenty":15.740808,"median":19.424544,"eighty":23.523098,"marketCap":957873862},{"date":"2026-03-27","current":29.5418,"twenty":15.765308,"median":19.434778,"eighty":23.579915,"marketCap":977360899},{"date":"2026-04-02","current":30.72633,"twenty":15.785759,"median":19.476792,"eighty":23.653908,"marketCap":1016549905},{"date":"2026-04-10","current":30.960204,"twenty":15.807143,"median":19.601578,"eighty":23.68894,"marketCap":1024287405},{"date":"2026-04-17","current":30.475132,"twenty":15.807143,"median":19.673317,"eighty":23.739424,"marketCap":1008239256},{"date":"2026-04-24","current":30.29756,"twenty":15.834341,"median":19.69585,"eighty":23.770038,"marketCap":1002364488},{"date":"2026-05-01","current":30.282402,"twenty":15.843482,"median":19.776721,"eighty":23.798541,"marketCap":1001862983},{"date":"2026-05-08","current":29.764847,"twenty":15.861468,"median":19.819473,"eighty":23.822244,"marketCap":984740182},{"date":"2026-05-15","current":30.158968,"twenty":15.882731,"median":19.850918,"eighty":23.896048,"marketCap":997779303},{"date":"2026-05-22","current":28.746771,"twenty":15.896909,"median":19.892641,"eighty":23.94589,"marketCap":922771357},{"date":"2026-05-29","current":29.46784,"twenty":15.912166,"median":19.934679,"eighty":23.981448,"marketCap":945917676},{"date":"2026-06-05","current":29.253529,"twenty":15.92301,"median":19.962517,"eighty":24.001407,"marketCap":939038274},{"date":"2026-06-12","current":29.019126,"twenty":15.950379,"median":20.021157,"eighty":24.033855,"marketCap":931513929},{"date":"2026-06-18","current":28.90304,"twenty":15.996207,"median":20.076009,"eighty":24.061834,"marketCap":927787587},{"date":"2026-06-26","current":27.619403,"twenty":16.012086,"median":20.114883,"eighty":24.100028,"marketCap":886582839},{"date":"2026-07-02","current":27.539036,"twenty":16.020031,"median":20.128797,"eighty":24.133116,"marketCap":884003064},{"date":"2026-07-10","current":27.900687,"twenty":16.028611,"median":20.179855,"eighty":24.208,"marketCap":895612054},{"date":"2026-07-17","current":27.253288,"twenty":16.04093,"median":20.216893,"eighty":24.26743,"marketCap":874830529},{"date":"2026-07-24","current":27.230963,"twenty":16.047119,"median":20.235064,"eighty":24.325984,"marketCap":874113925},{"date":"2026-07-31","current":27.123808,"twenty":16.062812,"median":20.249175,"eighty":24.370489,"marketCap":870674224},{"date":"2026-08-07","current":30.749245,"twenty":16.076546,"median":20.27049,"eighty":24.410141,"marketCap":987050762},{"date":"2026-08-14","current":30.762639,"twenty":16.104249,"median":20.299298,"eighty":24.456949,"marketCap":987480725},{"date":"2026-08-21","current":25.12209,"twenty":16.136886,"median":20.323278,"eighty":24.501949,"marketCap":1075476657},{"date":"2026-08-28","current":25.575491,"twenty":16.151953,"median":20.373288,"eighty":24.555738,"marketCap":1094886759},{"date":"2026-09-04","current":24.120273,"twenty":16.173973,"median":20.403121,"eighty":24.591441,"marketCap":1032588894},{"date":"2026-09-11","current":24.665355,"twenty":16.191963,"median":20.42292,"eighty":24.615168,"marketCap":1055923833},{"date":"2026-09-18","current":25.350457,"twenty":16.210543,"median":20.459415,"eighty":24.663881,"marketCap":1085253069},{"date":"2026-09-25","current":24.020258,"twenty":16.236051,"median":20.503982,"eighty":24.69029,"marketCap":1028307254},{"date":"2026-10-02","current":25.023742,"twenty":16.247984,"median":20.549104,"eighty":24.72103,"marketCap":1071266378},{"date":"2026-10-08","current":24.617014,"twenty":16.265051,"median":20.567496,"eighty":24.775273,"marketCap":1053854374}],"updateTime":1791565813831},"$inf$@#url:\"https://stock-news.skytigris.cn/v3/notice/important/events/list\",params:#symbol:\"NPK\",pageSize:20,pageCount:4,market:\"us\",,,undefined,":[{"items":[{"cdn_pdf":false,"hasAttachments":true,"id":"15942882","market":"us","labels":[],"media":"sec.gov","original_id":"AN110465923016536-NPK","pdf_url":"","pub_time":1675872000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"SC 13G/A [Amend]  - Statement of acquisition of beneficial ownership by individuals","symbol":"NPK","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/80172/000110465923016536/0001104659-23-016536-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":"SCHEDULE 13G/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000110465923016536/tv01482-nationalprestoindust.htm","primary":true,"translateUrl":"","linkName":"tv01482-nationalprestoindust.htm","type":"SC 13G/A","id":"NTFILEFhrd3yoj2RiJH7ZQ","market":"us","size":11492}],"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":"2023-02-09 00:00","pubTimestamp":1675872000,"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":"15691745","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922027838-NPK","pdf_url":"","pub_time":1668960000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922027838/0001437749-22-027838-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":"FORM 8-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922027838/npk20221121_8k.htm","primary":true,"translateUrl":"","linkName":"npk20221121_8k.htm","type":"8-K","id":"NTFILEEqkqqrgr4Y62BGaV","market":"us","size":24437}],"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":"2022-11-21 00:00","pubTimestamp":1668960000,"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":"15670324","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922027373-NPK","pdf_url":"","pub_time":1668355200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"NPK","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922027373/0001437749-22-027373-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":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922027373/npk20220830_10q.htm","primary":true,"translateUrl":"","linkName":"npk20220830_10q.htm","type":"10-Q","id":"NTFILEDSWfMn9R7JmBC36Z","market":"us","size":731001},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922027373/ex_418308.htm","primary":false,"translateUrl":"","linkName":"ex_418308.htm","type":"EX-31.1","id":"NTFILE9tRQrZo5AL1MCd8m","market":"us","size":10570},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922027373/ex_418309.htm","primary":false,"translateUrl":"","linkName":"ex_418309.htm","type":"EX-31.2","id":"NTFILEEv53r6bbrRkdFYLj","market":"us","size":10755},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922027373/ex_418310.htm","primary":false,"translateUrl":"","linkName":"ex_418310.htm","type":"EX-32.1","id":"NTFILE7NwDg6Pca3hu7x8a","market":"us","size":5185},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922027373/ex_418311.htm","primary":false,"translateUrl":"","linkName":"ex_418311.htm","type":"EX-32.2","id":"NTFILEDAASBAP5upn8H1rx","market":"us","size":5226}],"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":"2022-11-14 00:00","pubTimestamp":1668355200,"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":"15592291","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922025091-NPK","pdf_url":"","pub_time":1666886400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922025091/0001437749-22-025091-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":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922025091/ex_439080.htm","primary":true,"translateUrl":"","linkName":"ex_439080.htm","type":"EX-99.1","id":"NTFILEASbtcp4Su6YEkKcW","market":"us","size":20714},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922025091/npk20221028_8k.htm","primary":false,"translateUrl":"","linkName":"npk20221028_8k.htm","type":"8-K","id":"NTFILEErhZRzPPaD5ZPEdz","market":"us","size":25150}],"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":"2022-10-28 00:00","pubTimestamp":1666886400,"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":"15592292","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922024808-NPK","pdf_url":"","pub_time":1666713600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922024808/0001437749-22-024808-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","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/80172/000143774922024808/ex_437593.htm","primary":true,"translateUrl":"","linkName":"ex_437593.htm","type":"EX-99.1","id":"NTFILE49ByELTQEY661UBr","market":"us","size":5246},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922024808/npk20221026_8k.htm","primary":false,"translateUrl":"","linkName":"npk20221026_8k.htm","type":"8-K","id":"NTFILE8ReQbc9pdcABPhJ1","market":"us","size":27181}],"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":"2022-10-26 00:00","pubTimestamp":1666713600,"title_zh":"8-K  - Current report","summary_en":"Item 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":"15495950","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922023234-NPK","pdf_url":"","pub_time":1664380800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922023234/0001437749-22-023234-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","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/80172/000143774922023234/ex_427688.htm","primary":true,"translateUrl":"","linkName":"ex_427688.htm","type":"EX-99.1","id":"NTFILEHoSx6LhG861mwPYW","market":"us","size":5355},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922023234/npk20220929_8k.htm","primary":false,"translateUrl":"","linkName":"npk20220929_8k.htm","type":"8-K","id":"NTFILEFy1fy7LqrGBasfry","market":"us","size":25251}],"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":"2022-09-29 00:00","pubTimestamp":1664380800,"title_zh":"8-K  - Current report","summary_en":"Item 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":"15295833","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922020369-NPK","pdf_url":"","pub_time":1660233600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"NPK","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922020369/0001437749-22-020369-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":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922020369/npk20220704_10q.htm","primary":true,"translateUrl":"","linkName":"npk20220704_10q.htm","type":"10-Q","id":"NTFILEEm7CdvPwmruQ8ff6","market":"us","size":686633},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922020369/ex_392411.htm","primary":false,"translateUrl":"","linkName":"ex_392411.htm","type":"EX-31.1","id":"NTFILE12FDKfBsJZeHMwoE","market":"us","size":10568},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922020369/ex_392412.htm","primary":false,"translateUrl":"","linkName":"ex_392412.htm","type":"EX-31.2","id":"NTFILE24UAhU3iXLD18LRe","market":"us","size":10753},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922020369/ex_392413.htm","primary":false,"translateUrl":"","linkName":"ex_392413.htm","type":"EX-32.1","id":"NTFILEBmUDvFhs2w7rLYnV","market":"us","size":5208},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922020369/ex_392414.htm","primary":false,"translateUrl":"","linkName":"ex_392414.htm","type":"EX-32.2","id":"NTFILEAJfAhjMxjxW9Rfxo","market":"us","size":5221}],"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":"2022-08-12 00:00","pubTimestamp":1660233600,"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":"15269853","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922018416-NPK","pdf_url":"","pub_time":1659369600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922018416/0001437749-22-018416-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":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922018416/ex_404506.htm","primary":true,"translateUrl":"","linkName":"ex_404506.htm","type":"EX-99.1","id":"NTFILE35vKn4BcEkcTTutS","market":"us","size":20431},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922018416/npk20220801_8k.htm","primary":false,"translateUrl":"","linkName":"npk20220801_8k.htm","type":"8-K","id":"NTFILEHJH4ibrfuKjd1gAu","market":"us","size":25555}],"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":"2022-08-02 00:00","pubTimestamp":1659369600,"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":"14900101","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922013060-NPK","pdf_url":"","pub_time":1652889600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922013060/0001437749-22-013060-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.07: Submission of Matters to a Vote of Security Holders;\nItem 9.01: Financial Statements and Exhibits","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/80172/000143774922013060/ex_378122.htm","primary":true,"translateUrl":"","linkName":"ex_378122.htm","type":"EX-99.1","id":"NTFILE9MMq3kbHPB6ushWx","market":"us","size":10267},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922013060/npk20220519_8k.htm","primary":false,"translateUrl":"","linkName":"npk20220519_8k.htm","type":"8-K","id":"NTFILE23wqK9p6VzhWEwnG","market":"us","size":33606}],"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 5.07: 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":"14857958","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922012342-NPK","pdf_url":"","pub_time":1652371200000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"NPK","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922012342/0001437749-22-012342-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":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922012342/npk20220411_10q.htm","primary":true,"translateUrl":"","linkName":"npk20220411_10q.htm","type":"10-Q","id":"NTFILEENSVohwq9UEqaTSn","market":"us","size":534649},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922012342/ex_357249.htm","primary":false,"translateUrl":"","linkName":"ex_357249.htm","type":"EX-31.1","id":"NTFILE8s5ao6LSUmkv9B7m","market":"us","size":10565},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922012342/ex_357250.htm","primary":false,"translateUrl":"","linkName":"ex_357250.htm","type":"EX-31.2","id":"NTFILECyZUDACnbgTaMrrv","market":"us","size":10750},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922012342/ex_357251.htm","primary":false,"translateUrl":"","linkName":"ex_357251.htm","type":"EX-32.1","id":"NTFILE38moaviSXGhHTBjD","market":"us","size":5206},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922012342/ex_357252.htm","primary":false,"translateUrl":"","linkName":"ex_357252.htm","type":"EX-32.2","id":"NTFILE39yiCyP9YXCiaP8T","market":"us","size":5219}],"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":"2022-05-13 00:00","pubTimestamp":1652371200,"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":"14815339","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922010426-NPK","pdf_url":"","pub_time":1651420800000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922010426/0001437749-22-010426-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":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922010426/ex_368736.htm","primary":true,"translateUrl":"","linkName":"ex_368736.htm","type":"EX-99.1","id":"NTFILE2suUApQT22qYMiUe","market":"us","size":17591},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922010426/npk20220502_8k.htm","primary":false,"translateUrl":"","linkName":"npk20220502_8k.htm","type":"8-K","id":"NTFILEA7qwH61txfqTbQsw","market":"us","size":25875}],"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 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":"14361852","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922006042-NPK","pdf_url":"","pub_time":1646928000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-K  - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"NPK","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/80172/000143774922006042/0001437749-22-006042-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":"FORM 10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922006042/npk20211231_10k.htm","primary":true,"translateUrl":"","linkName":"npk20211231_10k.htm","type":"10-K","id":"NTFILEDMrrBD7ucCrKmDAD","market":"us","size":1413859},{"description":"EXHIBIT 21","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922006042/ex_320248.htm","primary":false,"translateUrl":"","linkName":"ex_320248.htm","type":"EX-21","id":"NTFILE39ciBBtco7HaASbj","market":"us","size":7973},{"description":"EXHIBIT 23.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922006042/ex_320249.htm","primary":false,"translateUrl":"","linkName":"ex_320249.htm","type":"EX-23.1","id":"NTFILEH885RW9sV2ny92rS","market":"us","size":2670},{"description":"EXHIBIT 23.2","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922006042/ex_344795.htm","primary":false,"translateUrl":"","linkName":"ex_344795.htm","type":"EX-23.2","id":"NTFILEBkFhLq5xhCgwt88s","market":"us","size":2553},{"description":"EXHIBIT 31.1","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922006042/ex_320250.htm","primary":false,"translateUrl":"","linkName":"ex_320250.htm","type":"EX-31.1","id":"NTFILEDj2y59fGqQUNU6hC","market":"us","size":10929},{"description":"EXHIBIT 31.2","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922006042/ex_320251.htm","primary":false,"translateUrl":"","linkName":"ex_320251.htm","type":"EX-31.2","id":"NTFILE9vDdJLcHjHuGHgdv","market":"us","size":10651},{"description":"EXHIBIT 32.1","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922006042/ex_320252.htm","primary":false,"translateUrl":"","linkName":"ex_320252.htm","type":"EX-32.1","id":"NTFILE6HYRYXcaXce5VA4Q","market":"us","size":5442},{"description":"EXHIBIT 32.2","seq":8,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922006042/ex_320253.htm","primary":false,"translateUrl":"","linkName":"ex_320253.htm","type":"EX-32.2","id":"NTFILE61Bw57W1RJXewSA6","market":"us","size":5703}],"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":"2022-03-11 00:00","pubTimestamp":1646928000,"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":"14262777","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774922003210-NPK","pdf_url":"","pub_time":1644768000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774922003210/0001437749-22-003210-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":"EXHIBIT 99.1","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922003210/ex_335099.htm","primary":true,"translateUrl":"","linkName":"ex_335099.htm","type":"EX-99.1","id":"NTFILEHJbmyjkG18W3scNr","market":"us","size":17374},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774922003210/npk20220211_8k.htm","primary":false,"translateUrl":"","linkName":"npk20220211_8k.htm","type":"8-K","id":"NTFILEySAfZ3a19pBwFLtw","market":"us","size":26201}],"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":"2022-02-14 00:00","pubTimestamp":1644768000,"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":"14179714","market":"us","labels":[],"media":"sec.gov","original_id":"AN110465922018150-NPK","pdf_url":"","pub_time":1644422400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"SC 13G/A [Amend]  - Statement of acquisition of beneficial ownership by individuals","symbol":"NPK","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/80172/000110465922018150/0001104659-22-018150-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":"SCHEDULE 13G/A","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000110465922018150/tv01486-nationalprestoindust.htm","primary":true,"translateUrl":"","linkName":"tv01486-nationalprestoindust.htm","type":"SC 13G/A","id":"NTFILE297GMF1G8tQTG4eZ","market":"us","size":11487}],"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":"2022-02-10 00:00","pubTimestamp":1644422400,"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":"12775771","market":"us","labels":[],"media":"sec.gov","original_id":"AN89710121000437-NPK","pdf_url":null,"pub_time":1621440000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000089710121000437/0000897101-21-000437-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 5.07: Submission of Matters to a Vote of Security Holders;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"PRESS RELEASE DATED MAY 20, 2021","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000089710121000437/presto210716_ex99-1.htm","primary":true,"translateUrl":null,"linkName":"presto210716_ex99-1.htm","type":"EX-99.1","id":"NTFILED3pqWEziftFpefKv","market":"us","size":9694},{"description":"FORM 8K DATED MAY 18, 2021","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000089710121000437/presto210716_8k.htm","primary":false,"translateUrl":null,"linkName":"presto210716_8k.htm","type":"8-K","id":"NTFILE3K7oJotaTHKip2vx","market":"us","size":31747}],"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":"2021-05-20 00:00","pubTimestamp":1621440000,"title_zh":"8-K  - Current report","summary_en":"Item 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":"12775772","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774921012315-NPK","pdf_url":null,"pub_time":1620921600000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-Q  - Quarterly report [Sections 13 or 15(d)]","symbol":"NPK","title":"10-Q  - Quarterly report [Sections 13 or 15(d)]","titleType":"Quarterly Report","type":"usFinancials","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/0001437749-21-012315-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":"FORM 10-Q","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/npk20210416_10q.htm","primary":true,"translateUrl":null,"linkName":"npk20210416_10q.htm","type":"10-Q","id":"NTFILEB8A3HYKNMSfueSGq","market":"us","size":543296},{"description":"EXHIBIT 31.1","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/ex_241684.htm","primary":false,"translateUrl":null,"linkName":"ex_241684.htm","type":"EX-31.1","id":"NTFILE6q4rJCNz7NEGtSXS","market":"us","size":10565},{"description":"EXHIBIT 31.2","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/ex_241685.htm","primary":false,"translateUrl":null,"linkName":"ex_241685.htm","type":"EX-31.2","id":"NTFILE57YUtvSqW9dMBV5V","market":"us","size":10750},{"description":"EXHIBIT 32.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/ex_241686.htm","primary":false,"translateUrl":null,"linkName":"ex_241686.htm","type":"EX-32.1","id":"NTFILEHWATK4uHYgjmUr7N","market":"us","size":5205},{"description":"EXHIBIT 32.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/ex_241687.htm","primary":false,"translateUrl":null,"linkName":"ex_241687.htm","type":"EX-32.2","id":"NTFILEDTgsCRogMe2oZYXn","market":"us","size":5218}],"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":91467,"name":"Condensed Consolidated Balance Sheets (Current Period Unaudited)","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/R2.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":91468,"name":"Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals)","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/R3.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":91469,"name":"Consolidated Statements of Comprehensive Income (Unaudited)","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/R4.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":91470,"name":"Consolidated Statements of Cash Flows (Unaudited)","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/R5.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":91471,"name":"Consolidated Statements Of Stockholders' Equity (Unaudited)","name_zh":null,"url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/R6.htm","cdn_url":"","translation_url":"","translate_status":0},{"id":91472,"name":"Consolidated Statements Of Stockholders' Equity (Unaudited) (Parentheticals)","name_zh":"合并股东权益表（未经审计）（括号）","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921012315/R7.htm","cdn_url":"https://static.tigerbbs.com/5e0938a98be5ebba838f5b01120fbc54","translation_url":"https://static.tigerbbs.com/2bb9894363486459dfdc30136578d29c","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":false,"id":"12775770","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774921010897-NPK","pdf_url":null,"pub_time":1620144000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921010897/0001437749-21-010897-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":[],"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":"2021-05-05 00:00","pubTimestamp":1620144000,"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":"12509682","market":"us","labels":[],"media":"sec.gov","original_id":"AN89710121000270-NPK","pdf_url":null,"pub_time":1617206400000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000089710121000270/0000897101-21-000270-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","is_important":0,"hasEarnInfos":false,"gpt_zh_title":"","gpt_en_title":"","attachments":[{"description":"PRESS RELEASE DATED APRIL 1, 2021","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000089710121000270/presto210494_ex99-1.htm","primary":true,"translateUrl":null,"linkName":"presto210494_ex99-1.htm","type":"EX-99.1","id":"NTFILE4Desu1m15UtyAZ7E","market":"us","size":3576},{"description":"FORM 8K DATED MARCH 30, 2021","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000089710121000270/presto210494_8k.htm","primary":false,"translateUrl":null,"linkName":"presto210494_8k.htm","type":"8-K","id":"NTFILE71NW2b2ixVsGa1bo","market":"us","size":28010}],"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":"2021-04-01 00:00","pubTimestamp":1617206400,"title_zh":"8-K  - Current report","summary_en":"Item 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":"12215516","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774921006162-NPK","pdf_url":null,"pub_time":1615824000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"10-K  - Annual report [Section 13 and 15(d), not S-K Item 405]","symbol":"NPK","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/80172/000143774921006162/0001437749-21-006162-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":"FORM 10-K","seq":1,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006162/npk20201231_10k.htm","primary":true,"translateUrl":null,"linkName":"npk20201231_10k.htm","type":"10-K","id":"NTFILE25UHSjqkqCLZHBUM","market":"us","size":1551131},{"description":"EXHIBIT 21","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006162/ex_224738.htm","primary":false,"translateUrl":null,"linkName":"ex_224738.htm","type":"EX-21","id":"NTFILEFXxnMmWCsS3rXz6T","market":"us","size":7973},{"description":"EXHIBIT 23.1","seq":3,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006162/ex_234472.htm","primary":false,"translateUrl":null,"linkName":"ex_234472.htm","type":"EX-23.1","id":"NTFILEHZxqLy3DBVRUUKrg","market":"us","size":2587},{"description":"EXHIBIT 31.1","seq":4,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006162/ex_224739.htm","primary":false,"translateUrl":null,"linkName":"ex_224739.htm","type":"EX-31.1","id":"NTFILEHkCPLvBHHnMYNUXH","market":"us","size":10927},{"description":"EXHIBIT 31.2","seq":5,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006162/ex_224740.htm","primary":false,"translateUrl":null,"linkName":"ex_224740.htm","type":"EX-31.2","id":"NTFILE2DmTekSreRLsMKUA","market":"us","size":10649},{"description":"EXHIBIT 32.1","seq":6,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006162/ex_224741.htm","primary":false,"translateUrl":null,"linkName":"ex_224741.htm","type":"EX-32.1","id":"NTFILEANHLEVvnCNSAhda4","market":"us","size":5439},{"description":"EXHIBIT 32.2","seq":7,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006162/ex_224742.htm","primary":false,"translateUrl":null,"linkName":"ex_224742.htm","type":"EX-32.2","id":"NTFILE7w3w6TUYqHBEmQyB","market":"us","size":5700}],"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":"2021-03-16 00:00","pubTimestamp":1615824000,"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":"12215127","market":"us","labels":[],"media":"sec.gov","original_id":"AN143774921006154-NPK","pdf_url":null,"pub_time":1615824000000,"showTitleType":true,"size":0,"source":"sec_us","summary":"8-K  - Current report","symbol":"NPK","title":"8-K  - Current report","titleType":"Major Issues Report","type":"usAnnouncement","url":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006154/0001437749-21-006154-index.htm","us_notice_code":"Form 8-K","us_title_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","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/80172/000143774921006154/ex_234310.htm","primary":true,"translateUrl":null,"linkName":"ex_234310.htm","type":"EX-99.1","id":"NTFILEHooeGyzibFrmdmLV","market":"us","size":4847},{"description":"FORM 8-K","seq":2,"linkUrl":"https://www.sec.gov/Archives/edgar/data/80172/000143774921006154/npk20210315_8k.htm","primary":false,"translateUrl":null,"linkName":"npk20210315_8k.htm","type":"8-K","id":"NTFILE8B6gubSZZv9u2Ur2","market":"us","size":24815}],"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":"2021-03-16 00:00","pubTimestamp":1615824000,"title_zh":"8-K  - Current report","summary_en":"Item 8.01: Other Events;\nItem 9.01: Financial Statements and Exhibits","summary_zh":"","notice_type":"","filling_tag":"","gpt_icon":0}],"pageSize":20,"totalPage":6,"pageCount":4,"totalSize":119,"code":"91000000","status":"200"}]}}