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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)		1 Months Ended	3 Months Ended		6 Months Ended	9 Months Ended	12 Months Ended
	Jan. 30, 2023 USD ($)	Jan. 31, 2021 shares	Jan. 01, 2023 USD ($)	Dec. 31, 2022 USD ($) bitcoin	Mar. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) bitcoin segment	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($) bitcoin	Mar. 31, 2024 USD ($)	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Decrease in price of bitcoin								(0.40)
Increase in price of natural gas								0.83
Cash and cash equivalents				$ 15,217,000				$ 15,217,000		$ 82,599,000
Bitcoin holdings at fair value				500,000				500,000
Accounts payable and accrued expenses				20,900,000				20,900,000
Prinipal and interest payable, current				80,200,000				80,200,000
Debt outstanding				157,493,000				157,493,000
Proceeds from issuance of common stock, net of issuance costs								9,531,000		47,443,000
Proceeds from sale of assets								$ 11,100,000		0
Number of reportable segments \| segment								1
Number of operating segments \| segment								1
Short-term investments				$ 0				$ 0		496,000
Impairment of digital assets								$ 100,000		$ 0
Number of digital assets (in bitcoin) \| bitcoin				31.4				31.4		29.0
Accounts receivable				$ 2,696,000				$ 2,696,000		$ 237,000
Percentage of annual emission expense and credit in the following year												50.00%
Impairment of long-lived assets								$ 176,307,000		$ 0
Share based compensation arrangement, expiration period								10 years
Vesting period								3 years
Expected dividend yield								0.00%		0.00%
Power and capacity
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Revenue, payment period (within)								7 days
Cryptocurrency datacenter
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Accounts receivable				0				$ 0
Forecast
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Cash and cash equivalents											$ 10,000,000
At The Market Issuance Sales Agreement
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Net proceeds received				2,100,000
Amended Equity Purchase Agreements
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Proceeds from issuance of common stock, net of issuance costs						$ 8,900,000			$ 59,800,000
Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Proceeds from sale of assets							$ 11,700,000
Subsequent Event \| At The Market Issuance Sales Agreement
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Net proceeds received			$ 8,200,000		$ 10,200,000
Master Equipment Finance Agreement \| Secured Debt
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Debt outstanding				$ 75,800,000				75,800,000
Master Equipment Finance Agreement \| Secured Debt \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Debt outstanding	$ 17,300,000
Annual interest payments	2,500,000
Master Equipment Finance Agreement, Post-Closing Covenant \| Secured Debt \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Annual interest payments	1,100,000
Refinanced 2021 and 2022 Master Equipment Finance Agreement \| Secured Debt \| Subsequent Event
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Principal and interest amount due	$ 62,700,000
Cost of Sales
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Emissions expense								$ 4,500,000		$ 2,600,000
GGHI Class B Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares issued in exchange for acquisition of ownership interests \| shares		28,000,000