SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Derivative Contracts Volume and Prices (Detail)	6 Months Ended
	Jun. 30, 2022 MMBTU $ / MMBTU
Natural Gas Swap Contracts:
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	58,880,000
Average price (in dollars per MMBtu)	2.68
Natural Gas Swap Contracts: | Swap Contracts for 2022
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	58,880,000
Average price (in dollars per MMBtu)	2.68
Natural Gas Swap Contracts: | Swap Contracts for 2023
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	0
Natural Gas Collar Contracts:
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	196,085,000
Average ceiling (dollars per unit)	7.81
Average floor (dollars per unit)	2.86
Natural Gas Collar Contracts: | Collar Contracts for 2022
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	67,160,000
Average ceiling (dollars per unit)	3.91
Average floor (dollars per unit)	2.62
Natural Gas Collar Contracts: | Collar Contract for 2023
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	128,925,000
Average ceiling (dollars per unit)	9.85
Average floor (dollars per unit)	2.98
Natural Gas Basis Swap Contracts:
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	5,520,000
Average price (in dollars per MMBtu)	(0.16)
Natural Gas Basis Swap Contracts: | Basis Swap Contracts for 2022
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	5,520,000
Average price (in dollars per MMBtu)	(0.16)
Natural Gas Basis Swap Contracts: | Basis Swap Contracts for 2023
Derivative [Line Items]
Volume (in MMBTU) | MMBTU	0