GENERAL AND BASIS OF PRESENTATION - Mammoth Senior Secured Notes 2025 (Details) $ in Millions	Sep. 18, 2025 USD ($) geothermalPowerPlant Payments
Project Subsidiaries, Geothermal Power Plants \| Mammoth Pacific, LLC
Debt Instrument [Line Items]
Equity ownership, excluding consolidated entity and equity method investee (in percentage)	100.00%
Number of contracted geothermal power plants, business combination \| geothermalPowerPlant	4
Mammoth Senior Secured Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 23.4
Debt instrument floating rate notes to be issued	$ 3.0
Debt instrument commitment fee (in percentage)	0.75%
Debt instrument, basis spread on variable rate	2.50%
Debt instrument number of semiannual installment \| Payments	15
Debt instrument, interest	6.95%

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