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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Derivative Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Asset Derivative Financial Instruments:
Derivative Financial Instruments  – current	$ 2,601	$ 5,258
Derivative Financial Instruments  – long-term	10,008	0
Liability Derivative Financial Instruments:
Derivative Financial Instruments  – current	513,645	181,945
Derivative Financial Instruments  – long-term	0	4,042
Derivative Financial Instruments  – current
Asset Derivative Financial Instruments:
Derivative Financial Instruments  – current	2,601	5,258
Liability Derivative Financial Instruments:
Derivative Financial Instruments  – current	513,645	181,945
Derivative Financial Instruments  – current | Natural gas price derivatives
Asset Derivative Financial Instruments:
Derivative Financial Instruments  – current	2,601	4,528
Liability Derivative Financial Instruments:
Derivative Financial Instruments  – current	513,645	181,215
Derivative Financial Instruments  – current | Oil price derivatives
Asset Derivative Financial Instruments:
Derivative Financial Instruments  – current	0	730
Liability Derivative Financial Instruments:
Derivative Financial Instruments  – current	0	730
Derivative Financial Instruments  – long-term | Natural gas price derivatives
Asset Derivative Financial Instruments:
Derivative Financial Instruments  – long-term	10,008	0
Liability Derivative Financial Instruments:
Derivative Financial Instruments  – long-term	$ 0	$ 4,042

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

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