Basis of Presentation - Additional Information (Details) $ in Thousands		1 Months Ended	3 Months Ended			6 Months Ended
	May 08, 2020 USD ($)	Mar. 31, 2020 USD ($) bbl / d $ / bbl	Jun. 30, 2020 USD ($) $ / bbl	Mar. 31, 2020 USD ($) $ / bbl	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) $ / bbl Mcf bbl	Jun. 30, 2019 USD ($)	Aug. 14, 2020 USD ($)	Jul. 31, 2020	Jul. 02, 2020 USD ($)	Jul. 01, 2020 USD ($)	Jun. 11, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jan. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction in capital spending program						65,000,000
Long-term debt			$ 546,250			$ 546,250							$ 506,202
Accrued interest – 11.25% Senior Notes			14,063			14,063							14,063
Senior Secured Credit Facility			285,000			285,000							247,000
Impairment of oil and gas properties			$ 0	$ 199,900	$ 0	$ 199,908	$ 0
Natural Gas - Henry Hub Swaps January- December 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total volume | Mcf						27,500
Weighted average price - swap | $ / bbl			2.36			2.36
Oil WTI Swaps July - December 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total volume | bbl						7,565
Weighted average price - swap | $ / bbl			57.38			57.38
Oil - WTI Swaps January - December 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total volume | bbl						7,000
Derivative contracts, flow rate | bbl / d		2,000
Weighted average price - swap | $ / bbl		41.00	50.40	41.00		50.40
Natural Gas - Henry Hub Swaps July - December 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total volume | bbl						20,000
Weighted average price - swap | $ / bbl			2.55			2.55
11.25% Senior Notes
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt instrument interest rate (as a percent)			11.25%			11.25%								11.25%
11.25% Senior Notes due 2023			$ 250,000			$ 250,000							250,000
Senior Secured Credit Facility
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt instrument expanded borrowing base		$ 290,000		$ 290,000							$ 286,000	$ 286,000
Proved oil And gas properties
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impairment of oil and gas properties				199,000
Unproved oil and gas properties
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impairment of oil and gas properties				$ 900
Mortgages Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Mortgage debt			$ 8,822			8,822							$ 8,931
Unsecured Debt | Coronavirus Aid, Relief and Economic Security Act
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from sssuance of unsecured debt	$ 2,200					$ 2,200
Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest – 11.25% Senior Notes											$ 14,100
Senior Secured Credit Facility								$ 285,000
Percentage of loan held in agreement									0.50
Subsequent Event | Senior Secured Credit Facility
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Senior Secured Credit Facility								285,000		$ 285,000
Borrowing deficiency								$ 60,400		60,400
Debt instrument expanded borrowing base										$ 225,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction in capital spending program						80,000,000
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction in capital spending program						85,000,000