SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)			12 Months Ended		15 Months Ended	18 Months Ended
	Nov. 09, 2023 USD ($) a	Jan. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) bitcoin segment MW	Dec. 31, 2022 USD ($) bitcoin	Jun. 30, 2023 USD ($)	Apr. 05, 2024 USD ($)	Jun. 30, 2024 MW	Mar. 06, 2024 ft²	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Cash and cash equivalents, including restricted cash			$ 13,312,000	$ 15,217,000					$ 82,599,000
Other current assets			11,100,000
Accounts payable and accrued expenses			9,600,000
Emissions liability			10,520,000	6,052,000
Short-term environmental liability			363,000	600,000
Working capital			3,400,000
Interest payments			6,100,000
Proceeds from sale of assets			$ 6,984,000	11,100,000	$ 11,700,000
Number of operating segments | segment			1
Number of reportable segments | segment			1
Loss on debt extinguishment			$ 100,000	$ 0
Number of digital assets (in bitcoin) | bitcoin			8.71	31.4
Accounts receivable			$ 358,000	$ 2,696,000
Percentage of annual emission expense and credit in the following year			50.00%
Impairment of long-lived assets			$ 4,000,000	$ 176,307,000
Share based compensation arrangement, expiration period			10 years
Vesting period			3 years
Expected dividend yield			0.00%	0.00%
NORTH DAKOTA
Debt Instrument [Line Items]
Power to be deployed | MW			7.5
Mining capacity lease term			5 years
Discontinued Operations, Disposed of by Sale | South Carolina Datacenter
Debt Instrument [Line Items]
Area of land sold | a	22
Consideration received	$ 28,000,000
Cash acquired from disposal	4,500,000
Bonus payments earned	1,600,000
Gain on disposal	8,200,000
Subsequent Event | Industrial Warehouse | Columbus, Mississippi
Debt Instrument [Line Items]
Area of real estate property | ft²								73,000
Power and capacity
Debt Instrument [Line Items]
Revenue, payment period (within)			7 days
Cost of revenue			$ 6,259,000	$ 14,357,000
Power and capacity | Revision of Prior Period, Reclassification, Adjustment
Debt Instrument [Line Items]
Cost of revenue				500,000
Cryptocurrency mining, net
Debt Instrument [Line Items]
Accounts receivable			0
Cryptocurrency mining, net
Debt Instrument [Line Items]
Cost of revenue			15,051,000	47,195,000
Cryptocurrency mining, net | Revision of Prior Period, Reclassification, Adjustment
Debt Instrument [Line Items]
Cost of revenue				1,200,000
Forecast | Industrial Warehouse | Columbus, Mississippi
Debt Instrument [Line Items]
Power to be deployed | MW							7
At The Market Issuance Sales Agreement
Debt Instrument [Line Items]
Net proceeds received			18,700,000	2,100,000
At The Market Issuance Sales Agreement | Subsequent Event
Debt Instrument [Line Items]
Net proceeds received						$ 20,700,000
Master Equipment Finance Agreement | Secured Debt
Debt Instrument [Line Items]
Extinguishment of debt		$ 58,500,000
Refinanced 2021 and 2022 Master Equipment Finance Agreement | Secured Debt
Debt Instrument [Line Items]
Remaining principal balance, interest payments		2,000,000
Principal and interest amount due		$ 62,700,000
Senior Notes Due January 2025 | 8.50% Senior Notes due 2026 | Discontinued Operations, Disposed of by Sale | South Carolina Datacenter
Debt Instrument [Line Items]
Extinguishment of debt	$ 17,700,000
Cost of Sales
Debt Instrument [Line Items]
Emissions expense			$ 6,500,000	$ 4,500,000