INCOME TAXES - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2017
Income Tax Contingency [Line Items]
Current federal income tax expense (benefit)	$ (5,674,000)	$ (44,096,000)	$ 159,000
Deferred	13,080,000	(272,311,000)	(102,177,000)
Current income tax receivable	26,086,000	46,174,000
Operating loss carryforwards	599,144,000
Statutory depletion deductions available for tax reporting purposes	1,050,000
Valuation allowance of deferred tax assets	384,810,000	180,121,000
Income taxes allocated to other comprehensive income related to oil and gas hedges	(13,080,000)	(35,737,000)	49,601,000
Unrecognized tax benefits	491,000	491,000
Unrecognized tax benefits, interest expense	46,000	131,000	0
Unrecognized tax benefits, penalties expense	$ 0	$ 0	$ 0
Forecast
Income Tax Contingency [Line Items]
Unrecognized tax benefits				$ 0