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SECURITY DEPOSITS - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Deposit Assets [Line Items]
Security deposits	$ 15,301	$ 23,855
Luminant Power Purchase Agreement collateral
Deposit Assets [Line Items]
Security deposits	0	12,554
Vistra Purchase and Sale Agreement collateral
Deposit Assets [Line Items]
Security deposits	0	3,063
Oncor Facility Extension security deposit related to Barber Lake Facility
Deposit Assets [Line Items]
Security deposits	$ 8,297	$ 0

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- Definition

Deposit Assets [Line Items]

+ References

No definition available.

+ Details

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- Definition

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

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Balance Type:	debit
Period Type:	instant

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- Details

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X

- Details

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X

- Details

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