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VARIABLE INTEREST ENTITIES - Investments (Detail) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended
	Jun. 02, 2022	Feb. 28, 2025	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
VARIABLE INTEREST ENTITIES
Contributions to equity method investments			$ 878	$ 625
Carrying value of investment			33,555	$ 45,693	$ 35,532	$ 46,503
NGP ET IV
VARIABLE INTEREST ENTITIES
Carrying value of investment			9,300
NGP ET IV
VARIABLE INTEREST ENTITIES
Funding commitment	$ 25,000
Contributions to investee to date			10,400
Gavin Generation
VARIABLE INTEREST ENTITIES
Contributions to equity method investments			$ 0
Funding commitment		$ 25,000
VIE, Not Primary Beneficiary | NGP ET IV | NGP ET IV
VARIABLE INTEREST ENTITIES
Ownership percentage by limited partners	3.60%
VIE, Not Primary Beneficiary | Gavin Generation | Gavin Generation
VARIABLE INTEREST ENTITIES
Ownership percentage by limited partners		5.00%

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- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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No definition available.

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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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