RELATED PARTY TRANSACTIONS (Details) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Oct. 31, 2022 USD ($) shares	Apr. 30, 2021 USD ($) $ / kWh MW	Sep. 30, 2025 USD ($) MW	Sep. 30, 2024 USD ($) MW	Sep. 30, 2025 USD ($) MW shares	Sep. 30, 2024 USD ($) MW shares	Dec. 31, 2024 USD ($)	Jul. 31, 2024 USD ($)	Jan. 31, 2023 USD ($)
RELATED PARTY TRANSACTIONS
Prepaid expenses			$ 2,955		$ 2,955		$ 2,493
Property, plant and equipment, net			861,778		861,778		411,869
Other amounts due to related parties			145		145		1,391
Issuance of stock (in shares) | shares	7,481,747
Common stock offering, net of issuance costs	$ 9,400		110,293	$ 15,520	110,293	$ 189,214
Related Party
RELATED PARTY TRANSACTIONS
Selling, general and administrative expenses			126	2,976	7,989	8,399
Operating expenses			$ 1,582	$ 856	$ 4,805	$ 2,619
Cryptocurrency load deployment that requires additional share-base award compensation | MW		100	95	100	95	100
Issuance of stock (in shares) | shares					798,319	1,083,189
Common stock offering, net of issuance costs					$ 2,400	$ 2,500
Beowulf E&D | Related Party
RELATED PARTY TRANSACTIONS
Annual base fee payable								$ 10,000	$ 8,500
Prepaid expenses			$ 0		0		800
Property, plant and equipment, net			5,700		5,700		400
Other amounts due to related parties							$ 1,400
Beowulf E&D | Related Party | Performance Shares
RELATED PARTY TRANSACTIONS
Additional awards for every 100MW cryptocurrency mining load		$ 2,500
Beowulf E&D | Services Agreement
RELATED PARTY TRANSACTIONS
Transaction amount					15,300	11,200
Beowulf E&D | Services Agreement | Related Party
RELATED PARTY TRANSACTIONS
Term of agreement		5 years
Selling, general and administrative expenses			0	$ 3,000	7,900	8,400
Operating expenses			$ 0	500	1,400	1,600
Beowulf E&D | Development of bitcoin and organization and legal costs | Related Party
RELATED PARTY TRANSACTIONS
Services agreement, monthly fee in the first year		$ 7,000
Services agreement, annual fee after the first year if higher		$ 10,000
Services agreement, annual fee per kilowatt hour of electric load utilized after the first year if higher (US Dollar per Kilowatt-Hours) | $ / kWh		0.0037
Beowulf E&D | Performance Milestone | Related Party
RELATED PARTY TRANSACTIONS
Selling, general and administrative expenses				$ 0	$ 2,400	$ 0