IMPAIRMENTS (Details) - USD ($) $ in Thousands	3 Months Ended	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2020	Aug. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Ceiling test write-down					$ 393,700
Unproved properties included in amortization			$ 226,500
Non-cash ceiling test write-down net of tax			346,600		346,600
Loss on abandonment of assets (Note 4)		$ 0	18,733	$ 0
Oil and Natural Gas
Property, Plant and Equipment [Line Items]
Loss on abandonment of assets (Note 4)			17,600
Drilling Equipment
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets Held-for-use				$ 0
Write-off equipment			1,100
Mid-Stream
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets Held-for-use	$ 10,700				$ 64,000
Oil and Natural Gas
Property, Plant and Equipment [Line Items]
Ceiling test write-down		$ 26,100	393,700
SCR drilling rigs | Drilling Equipment
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets Held-for-use			407,100
Other drilling equipment | Drilling Equipment
Property, Plant and Equipment [Line Items]
Impairment of Long-Lived Assets Held-for-use			3,000
BOSS drilling rigs | Drilling Equipment
Property, Plant and Equipment [Line Items]
Carrying value of asset group			$ 242,500