INCOME TAXES - Additional Information (Details) - USD ($)	2 Months Ended		10 Months Ended	12 Months Ended
	Mar. 09, 2018	Feb. 28, 2017	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Tax Cut and Jobs Act of 2017, change in tax rate, deferred tax assets and liabilities remeasurement					$ 87,300,000
Current federal income tax expense (benefit)			$ (18,339,000)
Deferred income tax provision (benefit)			0
Current income tax receivable			36,260,000		36,260,000
Operating loss carryforwards			315,700,000		315,700,000
Statutory depletion deductions available for tax reporting purposes			1,200,000		1,200,000
Valuation allowance of deferred tax assets			130,991,000		130,991,000
Income taxes allocated to other comprehensive income related to oil and gas hedges			0
Unrecognized tax benefits		$ 491,000	491,000		491,000
Unrecognized tax benefits, interest expense			33,000
Unrecognized tax benefits, penalties expense						$ 0
Predecessor
Income Tax Contingency [Line Items]
Current federal income tax expense (benefit)		3,570,000				(5,674,000)	$ (44,096,000)
Deferred income tax provision (benefit)		0				13,080,000	(272,311,000)
Current income tax receivable						26,086,000
Valuation allowance of deferred tax assets						384,810,000
Income taxes allocated to other comprehensive income related to oil and gas hedges		0				(13,100,000)	(35,700,000)
Unrecognized tax benefits		491,000				491,000
Unrecognized tax benefits, interest expense		7,000				$ 46,000	131,000
Unrecognized tax benefits, penalties expense		$ 0					$ 0
Forecast
Income Tax Contingency [Line Items]
U.S. Cancellation of debt income				$ 257,000,000
Unrecognized tax benefits				$ 0
Subsequent Event
Income Tax Contingency [Line Items]
Proceeds from income tax refunds	$ 20,600,000
IRC Section 382 Limitation
Income Tax Contingency [Line Items]
Operating loss carryforwards			127,000,000		127,000,000
Unlimited Portion
Income Tax Contingency [Line Items]
Operating loss carryforwards			$ 189,000,000		$ 189,000,000