Basis of Presentation Basis of Presentation - Additional Information (Details)				1 Months Ended	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	May 08, 2020 USD ($)	Mar. 01, 2020	Feb. 29, 2020	Mar. 31, 2020 USD ($) $ / bbl bbl	Jun. 30, 2020 bbl	Mar. 31, 2020 USD ($) $ / bbl	Mar. 31, 2019 USD ($)	Dec. 31, 2020 $ / bbl bbl	Dec. 31, 2020 $ / bbl Mcf	Dec. 31, 2021 bbl	Dec. 31, 2021 Mcf	Jul. 02, 2020 USD ($)	Jun. 11, 2020 USD ($)	May 31, 2020 Boe	Dec. 31, 2019 USD ($)	Jan. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Budget reduction capital spending midpoint		0.27
Total volume | bbl				2,000
Total net of debt issuance costs				$ 522,407,000		$ 522,407,000									$ 502,068,000
Weighted average price - swap | $ / bbl				41.00		41.00
Long-term debt				$ 526,148,000		$ 526,148,000									506,202,000
Impairment of oil and gas properties						$ 199,908,000	$ 0
Debt instrument interest rate (as a percent)				11.25%		11.25%
Accrued interest – 11.25% Senior Notes				$ 7,031,000		$ 7,031,000									14,063,000
Senior Secured Credit Facility				$ 267,000,000		$ 267,000,000									247,000,000
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				$ 250,000,000		$ 250,000,000									250,000,000
11.15% Senior Notes
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest – 11.25% Senior Notes															14,000,000
Senior Secured Credit Facility
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt instrument expanded borrowing base				290,000,000		290,000,000
Proved oil And gas properties
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impairment of oil and gas properties						199,000,000
Unproved oil and gas properties
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impairment of oil and gas properties						900,000
Mortgages Debt
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Mortgage debt				$ 8,877,000		$ 8,877,000									$ 8,931,000
Subsequent Event
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Shut in or stored (in BOE per day) | Boe														4,700
Total volume					7,498			7,565	20,000	7,000	27,500
Weighted average price - swap | $ / bbl								2.36	2.36
Senior Secured Credit Facility												$ 285,000,000
Subsequent Event | 11.20% Senior Notes
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Debt instrument interest rate (as a percent)												11.25%
Subsequent Event | Senior Secured Credit Facility
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Senior Secured Credit Facility												$ 285,000,000
Line of Credit Facility, Increase (Decrease), Net												60,400,000
Debt instrument expanded borrowing base												$ 225,000,000	$ 286,000,000
Subsequent Event | 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	$ 2,200,000
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction in capital spending program		85,000,000	80,000,000
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reduction in capital spending program		65,000,000	55,000,000