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ACQUISITIONS AND DIVESTITURES-Pecos County Consideration (Details) $ in Thousands	Dec. 13, 2017 USD ($)	Feb. 28, 2017 USD ($) $ / Mcf $ / Boe $ / bbl	Jan. 24, 2017	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Nov. 01, 2017 USD ($)	Sep. 09, 2016 USD ($)
Estimated Fair Value of Assets Acquired:
Evaluated oil and natural gas properties				$ 1,470,509	$ 877,316		$ 1,214,129
Other operating property and equipment				$ 130,251	$ 101,282		$ 38,071
8% Convertible Preferred Stock
Additional disclosures
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		$ 703,865
Less: Post-effective closing date adjustments		(4,677)
Final estimated consideration transferred		699,188
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		188,275
Unevaluated oil and natural gas properties		487,489
Other operating property and equipment		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 | Natural gas liquids
Additional disclosures
Weighted average commodity prices | $ / Boe		29.48
Pecos County Assets | 8% Convertible Preferred Stock
Additional disclosures
Net proceeds received		$ 400,100
Dividend rate (as a percent)		8.00%
Ward County Texas Assets
Consideration paid for acquisition and the estimated values of assets acquired and liabilities assumed
Final estimated consideration transferred	$ 101,800

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