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ACQUISITIONS AND DIVESTITURES-Pecos County Acquisition (Details) $ in Thousands	Dec. 13, 2017 USD ($)	Feb. 28, 2017 USD ($) $ / Mcf $ / Boe $ / bbl	Jan. 24, 2017	Jan. 18, 2017 USD ($)	Dec. 31, 2019 USD ($)	Oct. 02, 2019 USD ($)	Oct. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)	Nov. 01, 2017 USD ($)
Estimated Fair Value of Assets Acquired:
Evaluated oil and natural gas properties (3)(4)					$ 420,609	$ 380,364	$ 2,155,288	$ 1,470,509
Gas gathering and other operating assets (5)					$ 3,655	$ 3,655	$ 203,373	$ 130,251
8% Convertible Preferred Stock
ACQUISITIONS AND DIVESTITURES.
Dividend rate (as a percent)			8.00%
Pecos County Assets
Consideration paid for acquisition and the estimated values of assets acquired and liabilities assumed
Cash consideration paid to Samson at closing (1)		$ 703,865
Less: Post-effective closing date adjustments (2)		(4,677)
Final consideration transferred		699,188		$ 699,200
Plus: Estimated Fair Value of Liabilities Assumed:
Current liabilities		839
Asset retirement obligations		2,116
Amount attributable to liabilities assumed		2,955
Total purchase price plus liabilities assumed		702,143
Estimated Fair Value of Assets Acquired:
Evaluated oil and natural gas properties (3)(4)		188,275
Unevaluated oil and natural gas properties (3)(4)		487,489
Gas gathering and other operating assets (5)		26,379
Amount attributable to assets acquired		$ 702,143
Additional disclosures
Goodwill									$ 0
Weighted average cost of capital rate (as a percent)		10.0
Weighted average cost of capital for probable and possible reserves rate (as a percent)		12.0
Development plan in years		5 years
Pecos County Assets \| Crude oil
Additional disclosures
Weighted average commodity prices \| $ / bbl		76.10
Pecos County Assets \| Natural gas
Additional disclosures
Weighted average commodity prices \| $ / Mcf		4.14
Pecos County Assets \| NGLs
Additional disclosures
Weighted average commodity prices \| $ / Boe		29.48
Pecos County Assets \| 8% Convertible Preferred Stock
ACQUISITIONS AND DIVESTITURES.
Dividend rate (as a percent)		8.00%
Additional disclosures
Net proceeds expected to be received for common stock agreed to be purchased by third party		$ 400,100
Ward County Assets
Consideration paid for acquisition and the estimated values of assets acquired and liabilities assumed
Final consideration transferred	$ 101,800