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LONG-TERM DEBT - NARRATIVE (Details)			1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 01, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2020	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Aug. 09, 2021 USD ($)	Jul. 20, 2021 USD ($)	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Interest expense				$ 3,800,000	$ 1,400,000	$ 4,300,000	$ 2,600,000
Capitalized interest expense				600,000	$ 400,000	600,000	$ 1,400,000
Amended Credit Agreement | Revolver
Debt Instrument [Line Items]
Borrowing base	$ 500,000,000.0
Elected commitments	400,000,000.0
Amended Credit Agreement | Revolver | Subsequent Event
Debt Instrument [Line Items]
Borrowing base									$ 500,000,000.0
Elected commitments									$ 400,000,000.0
Amended Credit Agreement | Revolver | Minimum | LIBOR
Debt Instrument [Line Items]
Basis spread			0.00%
Amended Credit Agreement | Revolver | Minimum | Eurodollar
Debt Instrument [Line Items]
Basis spread			2.00%
Amended Credit Agreement | Revolver | Minimum | Reference Rate
Debt Instrument [Line Items]
Basis spread			1.00%
Amended Credit Agreement | Revolver | Maximum | Eurodollar
Debt Instrument [Line Items]
Basis spread			3.00%
Amended Credit Agreement | Revolver | Maximum | Reference Rate
Debt Instrument [Line Items]
Basis spread			2.00%
Amended Credit Agreement | HighPoint Merger | Revolver
Debt Instrument [Line Items]
Borrowing base	500,000,000.0	$ 260,000,000.0
Maximum borrowing capacity	$ 1,000,000,000.0	$ 750,000,000.0
Maximum net leverage ratio	3.0	3.50
Minimum current ratio covenant	1.00
Credit facility outstanding				99,000,000.0		99,000,000.0				$ 0
Deferred financing costs	$ 3,700,000
Amended Credit Agreement | HighPoint Merger | Revolver | Other Noncurrent Assets
Debt Instrument [Line Items]
Deferred financing costs				2,500,000		2,500,000				700,000
Amended Credit Agreement | HighPoint Merger | Revolver | Prepaid Expenses and Other
Debt Instrument [Line Items]
Deferred financing costs				$ 1,700,000		$ 1,700,000				$ 400,000
Amended Credit Agreement | HighPoint Merger | Revolver | Subsequent Event
Debt Instrument [Line Items]
Credit facility outstanding								$ 85,000,000.0
Amended Credit Agreement | HighPoint Merger | Revolver | Eurodollar
Debt Instrument [Line Items]
Basis spread	4.00%	3.00%
Amended Credit Agreement | HighPoint Merger | Revolver | Reference Rate
Debt Instrument [Line Items]
Basis spread	3.00%	2.00%
Amended Credit Agreement | HighPoint Merger | Revolver | Minimum | LIBOR
Debt Instrument [Line Items]
Basis spread	0.50%	0.00%
Amended Credit Agreement | HighPoint Merger | Revolver | Minimum | Base Rate
Debt Instrument [Line Items]
Basis spread	1.50%	0.00%
Senior Notes | Senior Notes Due 2026 | HighPoint Merger
Debt Instrument [Line Items]
Aggregate principal amount	$ 100,000,000
Interest rate	7.50%

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Represents the minimum current ratio covenant as defined by the revolving credit facility.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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