$NOG
NORTHERN OIL & GAS, INC. Stock $nog

$nog Overview Financials Valuation SEC Filings Company Website

2018 Form 10-K Financial Statement

#000110448519000059 Filed on March 18, 2019

Income Statement

Concept	2018	2017 Q4	2017 Q3
Revenue	$678.9M	$37.00M	$41.60M
YoY Change	224.35%	2.95%	-7.78%
Cost Of Revenue	$66.65M	$20.00M	$12.61M
YoY Change	34.01%	23.46%	-15.96%
Gross Profit	$612.3M	$17.00M	$28.99M
YoY Change	283.66%	-13.71%	-3.68%
Gross Profit Margin	90.18%	45.94%	69.7%
Selling, General & Admin	$14.57M	$3.100M	$8.000M
YoY Change	-23.28%	-16.22%	280.95%
% of Gross Profit	2.38%	18.24%	27.59%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$119.8M	$17.60M	$15.40M
YoY Change	101.31%	30.37%	12.41%
% of Gross Profit	19.56%	103.53%	53.12%
Operating Expenses	$246.3M	$40.66M	$41.01M
YoY Change	65.49%	21.53%	-45.01%
Operating Profit	$432.6M	-$3.660M	$585.0K
YoY Change	615.15%	-247.21%	-101.98%
Interest Expense	$86.01M	-$20.90M	$16.67M
YoY Change	22.36%	29.01%	3.27%
% of Operating Profit	19.88%		2850.12%
Other Income/Expense, Net	-$289.0M	-$21.76M	-$16.67M
YoY Change	305.56%	34.16%	3.27%
Pretax Income	$143.6M	-$25.40M	-$16.09M
YoY Change	-1434.39%	85.4%	-64.74%
Income Tax	-$55.00K	-$1.570M	$0.00
% Of Pretax Income	-0.04%
Net Earnings	$143.7M	-$23.85M	-$16.09M
YoY Change	-1662.86%	93.41%	-64.74%
Net Earnings / Revenue	21.16%	-64.45%	-38.67%
Basic Earnings Per Share	$6.08	-$0.37	-$0.26
Diluted Earnings Per Share	$6.07	-$0.37	-$0.26
COMMON SHARES
Basic Shares Outstanding	23.62M shares	66.82M shares	61.84M shares
Diluted Shares Outstanding	23.68M shares		61.84M shares

Balance Sheet

Concept	2018	2017 Q4	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.358M	$102.2M	$6.800M
YoY Change	-97.69%	1472.31%	106.06%
Cash & Equivalents	$2.358M	$102.2M	$6.777M
Short-Term Investments
Other Short-Term Assets	$128.5M	$2.900M	$6.100M
YoY Change	4273.29%	-9.38%	-39.6%
Inventory
Prepaid Expenses
Receivables	$96.35M	$46.85M	$39.18M
Other Receivables	$1.205M	$700.0K	$1.400M
Total Short-Term Assets	$228.4M	$152.8M	$53.47M
YoY Change	49.53%	225.75%	15.43%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.203B	$473.2M	$433.4M
YoY Change	154.16%	25.79%	21.96%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$72.49M	$5.491M	$6.669M
YoY Change	9241.69%	-34.87%	-23.04%
Total Long-Term Assets	$1.275B	$479.5M	$440.9M
YoY Change	165.95%	24.66%	21.11%
TOTAL ASSETS
Total Short-Term Assets	$228.4M	$152.8M	$53.47M
Total Long-Term Assets	$1.275B	$479.5M	$440.9M
Total Assets	$1.504B	$632.3M	$494.4M
YoY Change	137.82%	46.51%	20.47%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$55.02M	$93.15M	$81.15M
YoY Change	-40.94%	65.91%	69.92%
Accrued Expenses	$99.71M	$6.339M	$10.04M
YoY Change	792.17%	4.01%	93.05%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due			$155.0M
YoY Change
Total Short-Term Liabilities	$231.5M	$123.6M	$265.5M
YoY Change	87.36%	59.57%	265.74%
LONG-TERM LIABILITIES
Long-Term Debt	$830.2M	$979.3M	$691.1M
YoY Change	-15.23%	17.62%	-14.44%
Other Long-Term Liabilities	$12.05M	$135.2K	$8.400M
YoY Change	-40.33%	-13.67%	37.7%
Total Long-Term Liabilities	$842.3M	$135.2K	$691.1M
YoY Change	-15.73%	-99.98%	-15.09%
TOTAL LIABILITIES
Total Short-Term Liabilities	$231.5M	$123.6M	$265.5M
Total Long-Term Liabilities	$842.3M	$135.2K	$691.1M
Total Liabilities	$1.074B	$1.123B	$965.0M
YoY Change	-4.39%	22.21%	8.86%
SHAREHOLDERS EQUITY
Retained Earnings		-$940.6M	-$916.7M
YoY Change		0.99%	-0.25%
Common Stock		$449.7M	$446.1M
YoY Change		1.3%	0.71%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$429.9M	-$490.8M	-$470.6M
YoY Change
Total Liabilities & Shareholders Equity	$1.504B	$632.3M	$494.4M
YoY Change	137.82%	46.51%	20.47%

Cashflow Statement

Concept	2018	2017 Q4	2017 Q3
OPERATING ACTIVITIES
Net Income	$143.7M	-$23.85M	-$16.09M
YoY Change	-1662.86%	93.41%	-64.74%
Depreciation, Depletion And Amortization	$119.8M	$17.60M	$15.40M
YoY Change	101.31%	30.37%	12.41%
Cash From Operating Activities	$244.3M	$7.400M	$35.90M
YoY Change	234.76%	76.19%	-8.42%
INVESTING ACTIVITIES
Capital Expenditures	$86.78K	-$43.80M	-$32.90M
YoY Change	2094.82%	67.18%	15.03%
Acquisitions
YoY Change
Other Investing Activities	$67.69K	$0.00	$0.00
YoY Change	-60.52%	-100.0%	-100.0%
Cash From Investing Activities	-$474.5M	-$43.80M	-$32.80M
YoY Change	297.95%	75.2%	18.84%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	-$119.5M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$130.4M	131.8M	0.000
YoY Change	-8.13%	449.17%	-100.0%
NET CHANGE
Cash From Operating Activities	$244.3M	7.400M	35.90M
Cash From Investing Activities	-$474.5M	-43.80M	-32.80M
Cash From Financing Activities	$130.4M	131.8M	0.000
Net Change In Cash	-$99.83M	95.40M	3.100M
YoY Change	-204.31%	2881.25%	-875.0%
FREE CASH FLOW
Cash From Operating Activities	$244.3M	$7.400M	$35.90M
Capital Expenditures	$86.78K	-$43.80M	-$32.90M
Free Cash Flow	$244.2M	$51.20M	$68.80M
YoY Change	234.66%	68.42%	1.47%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2018	dei	Entity Registrant Name EntityRegistrantName	NORTHERN OIL & GAS, INC.
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018Q2	dei	Entity Public Float EntityPublicFloat	606100000	USD
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	376983438	shares
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0001104485
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2016	us-gaap	Income Tax Examination Penalties And Interest Expense IncomeTaxExaminationPenaltiesAndInterestExpense	0	USD
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
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CY2017Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
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CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	66791633	shares
CY2018	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
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CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	61173547	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	236773911	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	62408855	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	61173547	shares
CY2018	us-gaap	Net Income Loss NetIncomeLoss	143689235	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-9193772	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-293493708	USD
CY2018	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	119779675	USD
CY2017	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	59500155	USD
CY2016	us-gaap	Results Of Operations Depreciation Depletion Amortization And Accretion ResultsOfOperationsDepreciationDepletionAmortizationAndAccretion	61244158	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5147101	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4122226	USD
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3822967	USD
CY2018	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	0	USD
CY2017	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	95135	USD
CY2016	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	1089507	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-173430042	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-992950	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	-563485	USD
CY2017	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	495892	USD
CY2016	us-gaap	Amortization Of Debt Discount Premium AmortizationOfDebtDiscountPremium	501324	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	0	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-30356	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	365000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-785000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
CY2018	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	0	USD
CY2017	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	2820000	USD
CY2016	us-gaap	Litigation Settlement Expense LitigationSettlementExpense	0	USD
CY2018	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	28968176	USD
CY2017	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2016	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	0	USD
CY2018	us-gaap	Paid In Kind Interest PaidInKindInterest	2598548	USD
CY2017	us-gaap	Paid In Kind Interest PaidInKindInterest	0	USD
CY2016	us-gaap	Paid In Kind Interest PaidInKindInterest	0	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	3995476	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	3286566	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	3464040	USD
CY2018	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2017	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2016	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	237012834	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	119965	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-31623	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-373983	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	49122498	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	9717487	USD
CY2016	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-15604984	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-19397512	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	749159	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	691261	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2284002	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	2611492	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-365103	USD
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	10212130	USD
CY2017	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	142318	USD
CY2016	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-90593	USD
CY2018	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-3516958	USD
CY2017	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	253517	USD
CY2016	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	-1556673	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	420000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-617163	USD
CY2016	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	1402179	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	244262199	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	72967062	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	101891571	USD
CY2018	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	216692159	USD
CY2017	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	104997637	USD
CY2016	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	72944035	USD
CY2018	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	257807335	USD
CY2017	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	14409607	USD
CY2016	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	19991870	USD
CY2018	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	21689	USD
CY2017	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	171451	USD
CY2016	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	2172003	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	46000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	0	USD
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	14500	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	86783	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	3954	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	214685	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-474518588	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-119239747	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-90964087	USD
CY2018	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	190000000	USD
CY2017	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	36000000	USD
CY2016	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	63000000	USD
CY2018	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	50000000	USD
CY2017	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	180000000	USD
CY2016	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	69000000	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	60000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	300000000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	420105000	USD
CY2017	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
CY2016	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	0	USD
CY2018	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	364369444	USD
CY2017	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	0	USD
CY2016	us-gaap	Proceeds From Unsecured Notes Payable ProceedsFromUnsecuredNotesPayable	0	USD
CY2018	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	104214673	USD
CY2017	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2016	us-gaap	Repayments Of Senior Debt RepaymentsOfSeniorDebt	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	26648611	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	13361833	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	428515	USD
CY2018	nog	Payments For Debt Derivative Exchange Settlements PaymentsForDebtDerivativeExchangeSettlements	1769094	USD
CY2017	nog	Payments For Debt Derivative Exchange Settlements PaymentsForDebtDerivativeExchangeSettlements	0	USD
CY2016	nog	Payments For Debt Derivative Exchange Settlements PaymentsForDebtDerivativeExchangeSettlements	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	141673861	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	22195035	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	679836	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	668389	USD
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1403260	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	130431056	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	141969778	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-7831775	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-99825333	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	95697093	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	3095709	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	102183191	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	6486098	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3390389	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2357858	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	102183191	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	6486098	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-197602113	USD
CY2016	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2110	USD
CY2016	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	2155872	USD
CY2016	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	7231175	USD
CY2016	nog	Stock Issued During Period Value Restricted Stock Award Surrenders Tax Obligations StockIssuedDuringPeriodValueRestrictedStockAwardSurrendersTaxObligations	1403260	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-293493708	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-293493708	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	200000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-487421668	USD
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	2820911	USD
CY2017	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	23697	USD
CY2017	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	3646065	USD
CY2017	nog	Stock Issued During Period Value Restricted Stock Award Surrenders Tax Obligations StockIssuedDuringPeriodValueRestrictedStockAwardSurrendersTaxObligations	668389	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-9193772	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	-490840550	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Gross StockIssuedDuringPeriodValueRestrictedStockAwardGross	3295	USD
CY2018	us-gaap	Stock Issued During Period Value Restricted Stock Award Forfeitures StockIssuedDuringPeriodValueRestrictedStockAwardForfeitures	910	USD
CY2018	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	4361933	USD
CY2018	nog	Stock Issued During Period Value Restricted Stock Award Surrenders Tax Obligations StockIssuedDuringPeriodValueRestrictedStockAwardSurrendersTaxObligations	679836	USD
CY2018	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	141673861	USD
CY2018	nog	Stock Issued During Period Value Debt Exchange Agreements StockIssuedDuringPeriodValueDebtExchangeAgreements	327499418	USD
CY2018	us-gaap	Stock Issued During Period Value Acquisitions StockIssuedDuringPeriodValueAcquisitions	326353472	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	22195035	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	143689235	USD
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	429864883	USD
CY2018	us-gaap	Nature Of Operations NatureOfOperations	ORGANIZATION AND NATURE OF BUSINESS<div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">Northern Oil and Gas, Inc. (the “Company,” “Northern,” “our” and words of similar import), a Delaware corporation, is an independent energy company engaged in the acquisition, exploration, exploitation, development and production of crude oil and natural gas properties. The Company’s common stock trades on the NYSE American market under the symbol “NOG”.</span></div><div><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">Northern’s principal business is crude oil and natural gas exploration, development, and production with operations in North Dakota and Montana that primarily target the Bakken and Three Forks formations in the Williston Basin of the United States. The Company acquires leasehold interests that comprise of non-operated working interests in wells and in drilling projects within its area of operations.</span></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;text-decoration: underline;">Use of Estimates</span></div><div><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">The preparation of financial statements under GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. </span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">The most significant estimates relate to proved crude oil and natural gas reserves, estimates relating to certain crude oil and natural gas revenues and expenses, fair value of derivative instruments, fair value of continent consideration, acquisition date fair values of assets acquired and liabilities assumed, impairment of oil and natural gas properties, asset retirement obligations and deferred income taxes. Actual results may differ from those estimates.</span></div>
CY2018	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;text-decoration: underline;">Reclassifications</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">Certain prior period balances in the balance sheets have been reclassified to conform to the current year presentation. Such reclassifications had no impact on net loss, cash flows or stockholders’ deficit previously reported.</span></div>
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	5200000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	5600000	USD
CY2018	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	700000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	800000	USD
CY2018	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	300000	USD
CY2017	us-gaap	Allowance For Doubtful Accounts Receivable Write Offs AllowanceForDoubtfulAccountsReceivableWriteOffs	0	USD
CY2018	nog	Period For Advance Payments To Be Applied Against Joint Interest Billings PeriodForAdvancePaymentsToBeAppliedAgainstJointInterestBillings	P90D
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	100000	USD
CY2016	us-gaap	Depreciation And Amortization DepreciationAndAmortization	200000	USD
CY2018	nog	Capitalized Certain Payroll And Other Internal Costs CapitalizedCertainPayrollAndOtherInternalCosts	882053	USD
CY2017	nog	Capitalized Certain Payroll And Other Internal Costs CapitalizedCertainPayrollAndOtherInternalCosts	930289	USD
CY2016	nog	Capitalized Certain Payroll And Other Internal Costs CapitalizedCertainPayrollAndOtherInternalCosts	1890480	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	147197	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	147775	USD
CY2016	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	356196	USD
CY2018	nog	Total Capitalized Costs Oil And Gas Producing Activities TotalCapitalizedCostsOilAndGasProducingActivities	1029250	USD
CY2017	nog	Total Capitalized Costs Oil And Gas Producing Activities TotalCapitalizedCostsOilAndGasProducingActivities	1078064	USD
CY2016	nog	Total Capitalized Costs Oil And Gas Producing Activities TotalCapitalizedCostsOilAndGasProducingActivities	2246676	USD
CY2018	nog	Percentage Of Proved Reserves Sold To Be Considered Significant Alteration PercentageOfProvedReservesSoldToBeConsideredSignificantAlteration	0.25
CY2018	nog	Crude Oil And Natural Gas Properties Discount Rate CrudeOilAndNaturalGasPropertiesDiscountRate	0.10
CY2018	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	118973587	USD
CY2017	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	58801474	USD
CY2016	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	60637746	USD
CY2018	nog	Depletion Per Barrel Of Oil Equivalents Boe DepletionPerBarrelOfOilEquivalentsBOE	12.75
CY2017	nog	Depletion Per Barrel Of Oil Equivalents Boe DepletionPerBarrelOfOilEquivalentsBOE	10.89
CY2016	nog	Depletion Per Barrel Of Oil Equivalents Boe DepletionPerBarrelOfOilEquivalentsBOE	12.13
CY2018	nog	Capitalized Costs Relatedto Expired Leases Subjectto Depletion CapitalizedCostsRelatedtoExpiredLeasesSubjecttoDepletion	9400000	USD
CY2017	nog	Capitalized Costs Relatedto Expired Leases Subjectto Depletion CapitalizedCostsRelatedtoExpiredLeasesSubjecttoDepletion	18700000	USD
CY2016	nog	Capitalized Costs Relatedto Expired Leases Subjectto Depletion CapitalizedCostsRelatedtoExpiredLeasesSubjecttoDepletion	13400000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5100000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4100000	USD
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3800000	USD
CY2017	nog	Write Off Of Deferred Debt Issuance Cost Due To Reduction Of Borrowing Base WriteOffOfDeferredDebtIssuanceCostDueToReductionOfBorrowingBase	100000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1000000.0	USD
CY2018	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;text-decoration: underline;">Concentrations of Market and Credit Risk</span></div><div><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">The future results of the Company’s crude oil and natural gas operations will be affected by the market prices of crude oil and natural gas. The availability of a ready market for crude oil and natural gas products in the future will depend on numerous factors beyond the control of the Company, including weather, imports, marketing of competitive fuels, proximity and capacity of crude oil and natural gas pipelines and other transportation facilities, any oversupply or undersupply of crude oil, natural gas and liquid products, the regulatory environment, the economic environment, and other regional and political events, none of which can be predicted with certainty.</span></div><div><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">The Company operates in the exploration, development and production sector of the crude oil and natural gas industry. The Company’s receivables include amounts due, indirectly via the third-party operators of the wells, from purchasers of its crude oil and natural gas production. While certain of these customers, as well as third-party operators of the wells, are affected by periodic downturns in the economy in general or in their specific segment of the crude oil or natural gas industry, the Company believes that its level of credit-related losses due to such economic fluctuations have been immaterial.</span></div>The Company manages and controls market and counterparty credit risk. In the normal course of business, collateral is not required for financial instruments with credit risk. Financial instruments which potentially subject the Company to credit risk consist principally of temporary cash balances and derivative financial instruments. The Company maintains cash and cash equivalents in bank deposit accounts which, at times, may exceed the federally insured limits. The Company has not experienced any significant losses from such investments. The Company attempts to limit the amount of credit exposure to any one financial institution or company. The Company believes the credit quality of its counterparties is generally high. In the normal course of business, letters of credit or parent guarantees may be required for counterparties which management perceives to have a higher credit risk.
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	123700000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	227000000.0	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	236206457	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	62408855	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	61173547	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	567454	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	236773911	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	62408855	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	61173547	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	50685	shares
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	1109511	shares
CY2016	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	829313	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	250000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	391872	shares
CY2016	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2017	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2018	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	78864880	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	65565698	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	50713195	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	0	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	129451821	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	85002458	USD
CY2016	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	59520415	USD
CY2018	nog	Capitalized Asset Retirement Obligations CapitalizedAssetRetirementObligations	2854141	USD
CY2017	nog	Capitalized Asset Retirement Obligations CapitalizedAssetRetirementObligations	1187791	USD
CY2016	nog	Capitalized Asset Retirement Obligations CapitalizedAssetRetirementObligations	1353307	USD
CY2018	nog	Settlement Of Prepaid Expenses And Other Assets Through Noncash Payments Amount SettlementOfPrepaidExpensesAndOtherAssetsThroughNoncashPaymentsAmount	29424251	USD
CY2017	nog	Settlement Of Prepaid Expenses And Other Assets Through Noncash Payments Amount SettlementOfPrepaidExpensesAndOtherAssetsThroughNoncashPaymentsAmount	0	USD
CY2016	nog	Settlement Of Prepaid Expenses And Other Assets Through Noncash Payments Amount SettlementOfPrepaidExpensesAndOtherAssetsThroughNoncashPaymentsAmount	0	USD
CY2018	nog	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsideration	32312140	USD
CY2017	nog	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsideration	0	USD
CY2016	nog	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsideration	0	USD
CY2018	nog	Compensation Capitalized On Oil And Gas Properties CompensationCapitalizedOnOilAndGasProperties	368843	USD
CY2017	nog	Compensation Capitalized On Oil And Gas Properties CompensationCapitalizedOnOilAndGasProperties	274653	USD
CY2016	nog	Compensation Capitalized On Oil And Gas Properties CompensationCapitalizedOnOilAndGasProperties	971313	USD
CY2018	us-gaap	Notes Issued1 NotesIssued1	344279000	USD
CY2017	us-gaap	Notes Issued1 NotesIssued1	0	USD
CY2016	us-gaap	Notes Issued1 NotesIssued1	0	USD
CY2018	us-gaap	Stock Issued1 StockIssued1	326783303	USD
CY2017	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2016	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2018	nog	Derivative Liability Assumed DerivativeLiabilityAssumed	19354182	USD
CY2017	nog	Derivative Liability Assumed DerivativeLiabilityAssumed	0	USD
CY2016	nog	Derivative Liability Assumed DerivativeLiabilityAssumed	0	USD
CY2018	us-gaap	Notes Reduction NotesReduction	590041303	USD
CY2017	us-gaap	Notes Reduction NotesReduction	0	USD
CY2016	us-gaap	Notes Reduction NotesReduction	0	USD
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	129500000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	85000000.0	USD
CY2018	nog	Gas And Oil Acreage Net Acres Acquired GasAndOilAcreageNetAcresAcquired	10932	acre
CY2018	nog	Asset Acquisition Pro Forma Revenue AssetAcquisitionProFormaRevenue	797847000	USD
CY2017	nog	Asset Acquisition Pro Forma Revenue AssetAcquisitionProFormaRevenue	294862000	USD
CY2018	nog	Asset Acquisition Pro Forma Net Income Loss AssetAcquisitionProFormaNetIncomeLoss	174070000	USD
CY2017	nog	Asset Acquisition Pro Forma Net Income Loss AssetAcquisitionProFormaNetIncomeLoss	283000	USD
CY2017	nog	Gas And Oil Acreage Net Acres Acquired GasAndOilAcreageNetAcresAcquired	1934	acre
CY2016	nog	Gas And Oil Acreage Net Acres Acquired GasAndOilAcreageNetAcresAcquired	3399	acre
CY2018Q4	nog	Unproven Leasehold Interests UnprovenLeaseholdInterests	11054	acre
CY2017Q4	nog	Unproven Leasehold Interests UnprovenLeaseholdInterests	14377	acre
CY2018	nog	Anticipated Timing Of Inclusion Of Cost In Amortization Calculation AnticipatedTimingOfInclusionOfCostInAmortizationCalculation	P5Y
CY2018Q4	nog	Capitalized Costs Oil And Gas Producing Activities Property Acquisition CapitalizedCostsOilAndGasProducingActivitiesPropertyAcquisition	3298259	USD
CY2017Q4	nog	Capitalized Costs Oil And Gas Producing Activities Property Acquisition CapitalizedCostsOilAndGasProducingActivitiesPropertyAcquisition	70855	USD
CY2016Q4	nog	Capitalized Costs Oil And Gas Producing Activities Property Acquisition CapitalizedCostsOilAndGasProducingActivitiesPropertyAcquisition	762	USD
CY2015Q4	nog	Capitalized Costs Oil And Gas Producing Activities Property Acquisition CapitalizedCostsOilAndGasProducingActivitiesPropertyAcquisition	936637	USD
CY2018Q4	nog	Capitalized Costs Oil And Gas Producing Activities Development Costs CapitalizedCostsOilAndGasProducingActivitiesDevelopmentCosts	0	USD
CY2017Q4	nog	Capitalized Costs Oil And Gas Producing Activities Development Costs CapitalizedCostsOilAndGasProducingActivitiesDevelopmentCosts	0	USD
CY2016Q4	nog	Capitalized Costs Oil And Gas Producing Activities Development Costs CapitalizedCostsOilAndGasProducingActivitiesDevelopmentCosts	0	USD
CY2015Q4	nog	Capitalized Costs Oil And Gas Producing Activities Development Costs CapitalizedCostsOilAndGasProducingActivitiesDevelopmentCosts	0	USD
CY2018	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	3298259	USD
CY2017	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	70855	USD
CY2016	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	762	USD
CY2015	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	936637	USD
CY2018	nog	Impairment Costs Related To Expired Leases Subject To Depletion ImpairmentCostsRelatedToExpiredLeasesSubjectToDepletion	300000	USD
CY2017	nog	Impairment Costs Related To Expired Leases Subject To Depletion ImpairmentCostsRelatedToExpiredLeasesSubjectToDepletion	600000	USD
CY2016	nog	Impairment Costs Related To Expired Leases Subject To Depletion ImpairmentCostsRelatedToExpiredLeasesSubjectToDepletion	7000000.0	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	835139698	USD
CY2018Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	-13236967	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	18173393	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	830203272	USD
CY2017Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1000000000	USD
CY2017Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	1197954	USD
CY2017Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	19477824	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	979324222	USD
CY2018Q2	nog	Sale Of Stock Subscription Arrangement Amount Maximum SaleOfStockSubscriptionArrangementAmountMaximum	52000000.0	USD
CY2018Q2	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	1.50
	nog	Debt Instrument Number Of Exchange Agreements DebtInstrumentNumberOfExchangeAgreements	10	agreement
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	450000000	shares
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	675000000	shares
CY2018Q4	nog	Stock Shares Authorized StockSharesAuthorized	680000000	shares
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	675000000	shares
CY2018Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2018Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	66791633	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	63259781	shares
CY2015Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	63120384	shares
CY2018	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	7359953	shares
CY2017	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2016	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	0	shares
CY2018	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	62500	shares
CY2017	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	0	shares
CY2016	us-gaap	Stock Issued During Period Shares Share Based Compensation StockIssuedDuringPeriodSharesShareBasedCompensation	0	shares
CY2018	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	3295302	shares
CY2017	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	911355	shares
CY2016	us-gaap	Stock Issued During Period Shares Restricted Stock Award Gross StockIssuedDuringPeriodSharesRestrictedStockAwardGross	2109814	shares
CY2018	nog	Stock Issued During Period Shares Debt Exchange Agreements StockIssuedDuringPeriodSharesDebtExchangeAgreements	136063799	shares
CY2017	nog	Stock Issued During Period Shares Debt Exchange Agreements StockIssuedDuringPeriodSharesDebtExchangeAgreements	0	shares
CY2016	nog	Stock Issued During Period Shares Debt Exchange Agreements StockIssuedDuringPeriodSharesDebtExchangeAgreements	0	shares
CY2018	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	96926019	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2017	nog	Sharebased Compensation Arrangement By Sharebased Payment Award Options Gross Exercises In Period SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrossExercisesInPeriod	0	shares
CY2017	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	0	shares
CY2016	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	0	shares
CY2018	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	83730539	shares
CY2017	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	0	shares
CY2016	us-gaap	Stock Issued During Period Shares Acquisitions StockIssuedDuringPeriodSharesAcquisitions	0	shares
CY2018	nog	Stock Issued During Period Shares Sharebased Compensation Legal Settlement StockIssuedDuringPeriodSharesSharebasedCompensationLegalSettlement	0	shares
CY2017	nog	Stock Issued During Period Shares Sharebased Compensation Legal Settlement StockIssuedDuringPeriodSharesSharebasedCompensationLegalSettlement	3000000	shares
CY2016	nog	Stock Issued During Period Shares Sharebased Compensation Legal Settlement StockIssuedDuringPeriodSharesSharebasedCompensationLegalSettlement	0	shares
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	266683	shares
CY2017	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	270510	shares
CY2016	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	375875	shares
CY2018	us-gaap	Stock Issued During Period Shares Share Based Compensation Forfeited StockIssuedDuringPeriodSharesShareBasedCompensationForfeited	910086	shares
CY2017	us-gaap	Stock Issued During Period Shares Share Based Compensation Forfeited StockIssuedDuringPeriodSharesShareBasedCompensationForfeited	108993	shares
CY2016	us-gaap	Stock Issued During Period Shares Share Based Compensation Forfeited StockIssuedDuringPeriodSharesShareBasedCompensationForfeited	1594542	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	378333070	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	66791633	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	63259781	shares
CY2018	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	300000	shares
CY2018	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	700000	USD
CY2018Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	58700000	shares
CY2018Q2	nog	Sale Of Stock Gross Proceeds SaleOfStockGrossProceeds	84500000	USD
CY2018Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	3600000	shares
CY2018Q2	nog	Sale Of Stock Gross Proceeds SaleOfStockGrossProceeds	5200000	USD
CY2017	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	300000	shares
CY2017	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	700000	USD
CY2017	nog	Stock Issued During Period Shares Sharebased Compensation Legal Settlement StockIssuedDuringPeriodSharesSharebasedCompensationLegalSettlement	3000000.0	shares
CY2016	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	400000	shares
CY2016	us-gaap	Restricted Stock Value Shares Issued Net Of Tax Withholdings RestrictedStockValueSharesIssuedNetOfTaxWithholdings	1400000	USD
CY2011Q2	us-gaap	Stock Repurchase Program Authorized Amount1 StockRepurchaseProgramAuthorizedAmount1	150000000.0	USD
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	250000	shares
CY2018Q3	us-gaap	Stock Issued During Period Shares Share Based Compensation Forfeited StockIssuedDuringPeriodSharesShareBasedCompensationForfeited	187500	shares
CY2018	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	62500	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	141872	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	5.18
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y9M18D
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	250000	shares
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	2.79
CY2016	nog	Sharebased Compensation Arrangement By Sharebased Payment Award Options Gross Exercises In Period SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrossExercisesInPeriod	0	shares
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2016	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	391872	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	3.66
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P2Y10M24D
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	141872	shares
CY2017	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	250000	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	2.79
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P1Y
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2018	nog	Sharebased Compensation Arrangement By Sharebased Payment Award Options Gross Exercises In Period SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrossExercisesInPeriod	250000	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	0
CY2018	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	0	shares
CY2018	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	0
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	0	shares
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	0
CY2018Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2018Q1	nog	Sale Of Stock Subscription Arrangement Amount Maximum SaleOfStockSubscriptionArrangementAmountMaximum	40000000.0	USD
CY2018Q1	nog	Sale Of Stock Subscription Arrangement Equity Raise Lowest Price Per Share SaleOfStockSubscriptionArrangementEquityRaiseLowestPricePerShare	1.50
CY2018Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	58666667	shares
CY2018Q2	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	1.50
CY2017	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	600000	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	9128128	USD
CY2016Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	7508300	USD
CY2018	nog	Asset Retirement Obligation Liabilities Acquired AssetRetirementObligationLiabilitiesAcquired	1736579	USD
CY2017	nog	Asset Retirement Obligation Liabilities Acquired AssetRetirementObligationLiabilitiesAcquired	0	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	1117562	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	578441	USD
CY2018	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	0	USD
CY2017	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	609351	USD
CY2018	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	683445	USD
CY2017	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	536732	USD
CY2018	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	164854	USD
CY2017	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	104696	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	12500860	USD
CY2017Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	9128128	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	123700000	USD
CY2018	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-420000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-785000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	-1402000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	91958000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	126501000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-99299000	USD
CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	11636000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-12983000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-9707000	USD
CY2018	nog	Income Tax Expense Benefit Valuation Allowance IncomeTaxExpenseBenefitValuationAllowance	103229000	USD
CY2017	nog	Income Tax Expense Benefit Valuation Allowance IncomeTaxExpenseBenefitValuationAllowance	114303000	USD
CY2016	nog	Income Tax Expense Benefit Valuation Allowance IncomeTaxExpenseBenefitValuationAllowance	-109006000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-55000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1570000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1402000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	143634000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-10764000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-294896000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.2100
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3500
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.3500
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	30163000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-3767000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-103214000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	9143000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-8476000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-6306000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	316000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	0	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-835000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	124493000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2018	nog	Effective Income Tax Rate Reconciliation Net Operating Loss Carryforward Limitation EffectiveIncomeTaxRateReconciliationNetOperatingLossCarryforwardLimitation	63573000	USD
CY2017	nog	Effective Income Tax Rate Reconciliation Net Operating Loss Carryforward Limitation EffectiveIncomeTaxRateReconciliationNetOperatingLossCarryforwardLimitation	0	USD
CY2016	nog	Effective Income Tax Rate Reconciliation Net Operating Loss Carryforward Limitation EffectiveIncomeTaxRateReconciliationNetOperatingLossCarryforwardLimitation	0	USD
CY2018	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-21000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	483000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-53000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-103229000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-114303000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	109006000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-55000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1570000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1402000	USD
CY2018	nog	Effective Income Tax Rate Reconciliation Net Operating Loss Carryforward Limitation EffectiveIncomeTaxRateReconciliationNetOperatingLossCarryforwardLimitation	63600000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	96700000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	174865000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	146000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost	797000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	637000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	1144000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	1279000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Allowance For Doubtful Accounts DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts	1360000	USD
CY2018Q4	nog	Deferred Tax Assets Liabilities Property Plant And Equipment DeferredTaxAssetsLiabilitiesPropertyPlantAndEquipment	16904000	USD
CY2017Q4	nog	Deferred Tax Assets Liabilities Property Plant And Equipment DeferredTaxAssetsLiabilitiesPropertyPlantAndEquipment	42329000	USD
CY2018Q4	nog	Deferred Tax Assets Interest Carryforward DeferredTaxAssetsInterestCarryforward	40614000	USD
CY2017Q4	nog	Deferred Tax Assets Interest Carryforward DeferredTaxAssetsInterestCarryforward	0	USD
CY2018Q4	nog	Deferred Tax Assets Liabilities Derivatives DeferredTaxAssetsLiabilitiesDerivatives	-31981000	USD
CY2017Q4	nog	Deferred Tax Assets Liabilities Derivatives DeferredTaxAssetsLiabilitiesDerivatives	7393000	USD
CY2018Q4	nog	Deferred Tax Assets Liabilities Other DeferredTaxAssetsLiabilitiesOther	-145000	USD
CY2017Q4	nog	Deferred Tax Assets Liabilities Other DeferredTaxAssetsLiabilitiesOther	-140000	USD
CY2018Q4	nog	Deferred Tax Asset Liabilities Net Before Valuation Allowance DeferredTaxAssetLiabilitiesNetBeforeValuationAllowance	124154000	USD
CY2017Q4	nog	Deferred Tax Asset Liabilities Net Before Valuation Allowance DeferredTaxAssetLiabilitiesNetBeforeValuationAllowance	227748000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	123734000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	226963000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	420000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	785000	USD
CY2017	nog	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Provisional Income Tax Expense TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetProvisionalIncomeTaxExpense	124500000	USD
CY2017	nog	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Asset Valuation Allowance Provisional Income Tax Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxAssetValuationAllowanceProvisionalIncomeTaxBenefit	125300000	USD
CY2017	nog	Tax Cuts And Jobs Act Of2017 Change In Tax Rate Income Tax Expense Benefit TaxCutsAndJobsActOf2017ChangeInTaxRateIncomeTaxExpenseBenefit	-800000	USD
CY2018Q4	nog	Deferred Tax Asset Interest Carryforward DeferredTaxAssetInterestCarryforward	40600000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	400000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	352000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	361000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	340000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	1053000	USD
CY2018	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	328000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	369000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	320000	USD
CY2017Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	0	USD
CY2018Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue	76252000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	830200000	USD
CY2018	nog	Asset Retirement Obligation Liabilities Incurred And Acquired AssetRetirementObligationLiabilitiesIncurredAndAcquired	2900000	USD
CY2018	nog	Cash Received Paid On Derivatives CashReceivedPaidOnDerivatives	-22885743	USD
CY2017	nog	Cash Received Paid On Derivatives CashReceivedPaidOnDerivatives	3776788	USD
CY2016	nog	Cash Received Paid On Derivatives CashReceivedPaidOnDerivatives	61528201	USD
CY2018	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	207891912	USD
CY2017	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-18443443	USD
CY2016	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-76346935	USD
CY2018	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	185006169	USD
CY2017	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-14666655	USD
CY2016	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-14818734	USD
CY2017	nog	Net Cash Receipts Payment For Crude Oil Contracts NetCashReceiptsPaymentForCrudeOilContracts	700000	USD
CY2018	us-gaap	Derivative Nonmonetary Notional Amount Volume DerivativeNonmonetaryNotionalAmountVolume	12300000	Mcf
CY2018Q4	us-gaap	Derivative Swap Type Average Fixed Price DerivativeSwapTypeAverageFixedPrice	62.31
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	178477284	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	764192	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	177713092	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	764192	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	764192	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	0	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	0	USD
CY2017Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	0	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	30178820	USD
CY2017Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	30178820	USD
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	236206457	shares
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.61
CY2017	us-gaap	Net Income Loss NetIncomeLoss	-9193772	USD
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	62408855	shares
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.15
CY2016	us-gaap	Net Income Loss NetIncomeLoss	-293493708	USD
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	61173547	shares
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-4.80
CY2018	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	567454	shares
CY2017	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2016	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	143689235	USD
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	236773911	shares
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-9193772	USD
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	62408855	shares
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.15
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-293493708	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	61173547	shares
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-4.80
CY2018	us-gaap	Defined Contribution Plan Maximum Annual Contributions Per Employee Percent DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent	1
CY2018	nog	Maximum Percentage Of Eligible Compensation Matched MaximumPercentageOfEligibleCompensationMatched	0.08
CY2018	us-gaap	Defined Contribution Plan Employers Matching Contribution Annual Vesting Percentage DefinedContributionPlanEmployersMatchingContributionAnnualVestingPercentage	1
CY2017Q4	nog	Capitalized Costs Oil And Gas Producing Activities Property Acquisition CapitalizedCostsOilAndGasProducingActivitiesPropertyAcquisition	71000	USD
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	200000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	200000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	200000	USD
CY2018	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	582696000	USD
CY2017	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	15722000	USD
CY2016	us-gaap	Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves	18532000	USD
CY2018	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	4903000	USD
CY2017	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	717000	USD
CY2016	us-gaap	Costs Incurred Acquisition Of Unproved Oil And Gas Properties CostsIncurredAcquisitionOfUnprovedOilAndGasProperties	2301000	USD
CY2018	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	260945000	USD
CY2017	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	139532000	USD
CY2016	us-gaap	Costs Incurred Development Costs CostsIncurredDevelopmentCosts	63621000	USD
CY2018	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	848545000	USD
CY2017	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	155971000	USD
CY2016	us-gaap	Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities	84454000	USD
CY2018Q4	nog	Capitalized Costs Oil And Gas Producing Activities Property Acquisition CapitalizedCostsOilAndGasProducingActivitiesPropertyAcquisition	3298000	USD
CY2016Q4	nog	Capitalized Costs Oil And Gas Producing Activities Property Acquisition CapitalizedCostsOilAndGasProducingActivitiesPropertyAcquisition	1000	USD
CY2015Q4	nog	Capitalized Costs Oil And Gas Producing Activities Property Acquisition CapitalizedCostsOilAndGasProducingActivitiesPropertyAcquisition	937000	USD
CY2018Q4	nog	Capitalized Costs Oil And Gas Producing Activities Development Costs CapitalizedCostsOilAndGasProducingActivitiesDevelopmentCosts	0	USD
CY2017Q4	nog	Capitalized Costs Oil And Gas Producing Activities Development Costs CapitalizedCostsOilAndGasProducingActivitiesDevelopmentCosts	0	USD
CY2016Q4	nog	Capitalized Costs Oil And Gas Producing Activities Development Costs CapitalizedCostsOilAndGasProducingActivitiesDevelopmentCosts	0	USD
CY2015Q4	nog	Capitalized Costs Oil And Gas Producing Activities Development Costs CapitalizedCostsOilAndGasProducingActivitiesDevelopmentCosts	0	USD
CY2018Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	3298000	USD
CY2017Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	71000	USD
CY2016Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	1000	USD
CY2015Q4	us-gaap	Capitalized Costs Oil And Gas Producing Activities Net CapitalizedCostsOilAndGasProducingActivitiesNet	937000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	7524587000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	3143604000	USD
CY2016Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows	1708871000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	2605279000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	1265525000	USD
CY2016Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts	775535000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	784615000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	409360000	USD
CY2016Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts	220870000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	611989000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	27476000	USD
CY2016Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense	2477000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	3522704000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	1441243000	USD
CY2016Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows	709989000	USD
CY2018Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	1643061000	USD
CY2017Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	687257000	USD
CY2016Q4	srt	Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows	330963000	USD
CY2018Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1879643000	USD
CY2017Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	753986000	USD
CY2016Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	379026000	USD
CY2017Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	753986000	USD
CY2016Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	379026000	USD
CY2015Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	574799000	USD
CY2018	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	381961000	USD
CY2017	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	153626000	USD
CY2016	srt	Sales And Transfers Of Oil And Gas Produced Net Of Production Costs SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts	98497000	USD
CY2018	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	549353000	USD
CY2017	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	217146000	USD
CY2016	srt	Extensions Discoveries Additions And Improved Recovery Less Related Costs ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts	59543000	USD
CY2018	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	115542000	USD
CY2017	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	46834000	USD
CY2016	srt	Previously Estimated Development Costs Incurred PreviouslyEstimatedDevelopmentCostsIncurred	23272000	USD
CY2018	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	484122000	USD
CY2017	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	216217000	USD
CY2016	srt	Net Increase Decrease In Sales And Transfer Prices And Production Costs NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts	-174656000	USD
CY2018	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-91829000	USD
CY2017	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	-34753000	USD
CY2016	srt	Increase Decrease In Estimated Future Development Costs IncreaseDecreaseInEstimatedFutureDevelopmentCosts	57481000	USD
CY2018	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	66185000	USD
CY2017	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	28915000	USD
CY2016	srt	Revisions Of Previous Quantity Estimates RevisionsOfPreviousQuantityEstimates	-130664000	USD
CY2018	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	75800000	USD
CY2017	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	37942000	USD
CY2016	srt	Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount	57569000	USD
CY2018	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-296571000	USD
CY2017	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	-3617000	USD
CY2016	srt	Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves	498000	USD
CY2018	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	502193000	USD
CY2017	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	0	USD
CY2016	srt	Increase Due To Purchases Of Minerals In Place IncreaseDueToPurchasesOfMineralsInPlace	9577000	USD
CY2018	srt	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	102825000	USD
CY2017	srt	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	19903000	USD
CY2016	srt	Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther	105000	USD
CY2018Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	1879643000	USD
CY2017Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	753986000	USD
CY2016Q4	srt	Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves	379026000	USD
CY2018Q1	us-gaap	Revenues Revenues	66613463	USD
CY2018Q2	us-gaap	Revenues Revenues	66845899	USD
CY2018Q3	us-gaap	Revenues Revenues	102269220	USD
CY2018Q4	us-gaap	Revenues Revenues	443195914	USD
CY2018Q1	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-20271451	USD
CY2018Q2	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-42202788	USD
CY2018Q3	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-43148073	USD
CY2018Q4	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	290628481	USD
CY2018Q1	us-gaap	Operating Expenses OperatingExpenses	40708240	USD
CY2018Q2	us-gaap	Operating Expenses OperatingExpenses	50528032	USD
CY2018Q3	us-gaap	Operating Expenses OperatingExpenses	66672662	USD
CY2018Q4	us-gaap	Operating Expenses OperatingExpenses	88387075	USD
CY2018Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	25905223	USD
CY2018Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	16317867	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	35596558	USD
CY2018Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	354808839	USD
CY2018Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-22940126	USD
CY2018Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-112865565	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-16617985	USD
CY2018Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-136570576	USD
CY2018Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2018Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2018Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-55000	USD
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	2965097	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	-96546698	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	18978573	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	218292263	USD
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.05
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.49
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.06
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.05
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.49
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.06
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2017Q1	us-gaap	Revenues Revenues	65816847	USD
CY2017Q2	us-gaap	Revenues Revenues	64901882	USD
CY2017Q3	us-gaap	Revenues Revenues	41598659	USD
CY2017Q4	us-gaap	Revenues Revenues	37002281	USD
CY2017Q1	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	16960883	USD
CY2017Q2	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	16513032	USD
CY2017Q3	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-12663253	USD
CY2017Q4	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	-35477317	USD
CY2017Q1	us-gaap	Operating Expenses OperatingExpenses	32572699	USD
CY2017Q2	us-gaap	Operating Expenses OperatingExpenses	34576905	USD
CY2017Q3	us-gaap	Operating Expenses OperatingExpenses	41013678	USD
CY2017Q4	us-gaap	Operating Expenses OperatingExpenses	40661791	USD
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	33244148	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	30324977	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	584981	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-3659510	USD
CY2017Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-16303805	USD
CY2017Q2	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-16523118	USD
CY2017Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-16672448	USD
CY2017Q4	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-21759013	USD
CY2017Q1	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2017Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	0	USD
CY2017Q4	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-1570016	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	16940523	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	13801859	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	-16087467	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	-23848687	USD
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.28
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.26
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.37
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.27
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.26
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.37

Files In Submission

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NORTHERN OIL & GAS, INC. Stock $nog

2018 Form 10-K Financial Statement

#000110448519000059 Filed on March 18, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NOG NORTHERN OIL & GAS, INC. Stock $nog

2018 Form 10-K Financial Statement

#000110448519000059 Filed on March 18, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

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NORTHERN OIL & GAS, INC. Stock $nog