RELATED PARTY TRANSACTIONS (Details)	1 Months Ended			3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) shares	Oct. 31, 2022 USD ($) shares	Apr. 30, 2021 USD ($) $ / kWh	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) shares	Sep. 30, 2023 USD ($)	Jul. 31, 2024 USD ($)	Dec. 31, 2023 USD ($) MW	Jan. 31, 2023 USD ($)	Dec. 31, 2021 USD ($) MW
RELATED PARTY TRANSACTIONS
Prepaid expenses				$ 3,091,000		$ 3,091,000			$ 4,540,000
Other amounts due to related parties				472,000		472,000			972,000
Property, plant and equipment, net				283,098,000		283,098,000			205,284,000
Share based liabilities due to related party				0		0			$ 2,500,000
Issuance of stock (in shares) | shares		7,481,747
Common stock offering, net of issuance costs		$ 9,400,000		15,520,000	$ 21,786,000	189,214,000	$ 54,134,000
Related Party
RELATED PARTY TRANSACTIONS
Selling, general and administrative expenses				2,976,000	4,519,000	8,399,000	10,093,000
Operating expenses				856,000	779,000	$ 2,619,000	2,015,000
Cryptocurrency load deployment that requires additional share-base award compensation | MW									100		100
Share based liabilities due to related party									$ 2,500,000
Issuance of stock (in shares) | shares						1,083,189
Common stock offering, net of issuance costs						$ 2,500,000
Performance Milestone | Related Party
RELATED PARTY TRANSACTIONS
Selling, general and administrative expenses				0	0	0	400,000
Beowulf E&D | Related Party
RELATED PARTY TRANSACTIONS
Annual base fee payable								$ 10,000,000.0		$ 8,500,000
Prepaid expenses				800,000		800,000			700,000
Other amounts due to related parties				400,000		400,000			1,000,000.0
Property, plant and equipment, net				400,000		400,000			$ 6,600,000
Share based liabilities due to related party	$ 15,000,000.0				15,000,000.0		15,000,000.0
Issuance of stock for stock-based compensation/liabilities (in shares) | shares	2,460,513
Shares issued, value, share-based payment arrangement, after forfeiture	$ 3,400,000
Increase (decrease) in share-based liabilities due to related party					11,600,000	11,600,000
Beowulf E&D | Related Party | Performance Shares
RELATED PARTY TRANSACTIONS
Additional awards for every 100MW cryptocurrency mining load											$ 2,500,000
Beowulf E&D | Services Agreement | Related Party
RELATED PARTY TRANSACTIONS
Term of agreement			5 years
Transaction amount						11,200,000	16,400,000
Selling, general and administrative expenses				3,000,000.0	4,500,000	8,400,000	10,100,000
Operating expenses				$ 500,000	$ 500,000	$ 1,600,000	$ 1,000,000
Deferred compensation arrangement with individual, fair value of shares to be issued											$ 12,500,000
Beowulf E&D | Development of bitcoin and organization and legal costs | Related Party
RELATED PARTY TRANSACTIONS
Services agreement, monthly fee in the first year			$ 7,000,000
Services agreement, annual fee after the first year if higher			$ 10,000,000.0
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