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DEBT - Narrative (Details)			1 Months Ended			3 Months Ended		12 Months Ended
	Mar. 01, 2023 USD ($) shares	Dec. 01, 2021 USD ($) shares	Mar. 31, 2023 USD ($) $ / shares shares	Oct. 31, 2022 USD ($) tranche $ / shares shares	Jul. 31, 2022 USD ($) tranche $ / shares shares	Mar. 31, 2024 USD ($) $ / shares	Mar. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2023 USD ($)
DEBT
Repayments of secured debt						$ 33,412,000	$ 0
Payments of prepayment fees associated with early extinguishment of long-term debt						314,000	0
Loss on extinguishment of debt						2,027,000	0
Issuance of stock (in shares) | shares	40,764,706			7,481,747
Fair value of term loan						$ 100,200,000
Warrants issued to lenders (in shares) | shares				2,667,678
Exercise price of warrants (in dollars per share) | $ / shares				$ 1.93		$ 0.58
Amortization of debt issuance costs, commitment fees and accretion of debt discount						$ 7,593,000	3,549,000
Capitalized interest costs						0	$ 1,000,000
Warrant agreement
DEBT
Proceeds from additional capital raise						5,000,000
Warrant agreement | Penny Warrants
DEBT
Warrants issued to lenders (in shares) | shares			27,759,265				27,759,265
Exercise price of warrants (in dollars per share) | $ / shares			$ 0.01				$ 0.01
Percentage of common stock on fully diluted equity			10.00%
Warrant agreement | Dollar Warrants
DEBT
Warrants issued to lenders (in shares) | shares			13,879,630				13,879,630
Exercise price of warrants (in dollars per share) | $ / shares			$ 1.00				$ 1.00
Percentage of common stock on fully diluted equity			5.00%
Delayed Draw Term Loan
DEBT
Allocated fair value of equity included in the issuance of loan				$ 2,900,000
Number of tranches | tranche				2
Number of separate increments | tranche				2
Percentage of additional shares received on conversion of additional warrants per each tranche				1.875%
Number of separate sub-tranches | tranche				2
Delayed Draw Term Loan | First Tranche
DEBT
Debt instrument face amount, per tranche				$ 7,500,000
Delayed Draw Term Loan | Second Tranche
DEBT
Debt instrument face amount, per tranche				7,500,000
First Amendment Term Loan
DEBT
Amortization of debt issuance costs, commitment fees and accretion of debt discount						7,600,000	$ 3,500,000
Interest expense							2,500,000
Capitalized interest in property, plant and equipment								$ 500,000
Capitalized interest costs								500,000
Nautilus Joint Venture
DEBT
Issuance of stock (in shares) | shares		839,398
Percentage to outstanding shares		1.50%
One Term Loan Investor, NovaWulf Digital Master Fund, L.P. | Nautilus Joint Venture
DEBT
Issuance costs		$ 4,000,000
Allocated fair value of equity included in the issuance of loan		25,700,000
Upfront fee considered as debt discount		29,800,000
Loans Payable
DEBT
Loan amount		$ 123,500,000
Fair value of term loan						1,100,000
Amount of fair value included in debt discount						4,100,000
Effective interest rate of debt		12.90%
Loans Payable | Term Sheet
DEBT
Repayments of debt			$ 40,000,000
Repayments of secured debt						33,400,000	$ 0
Payments of prepayment fees associated with early extinguishment of long-term debt						300,000
Loss on extinguishment of debt						2,000,000
Unamortized discount, derecognized						1,700,000
Loans Payable | Term Loan, Optional Prepayment
DEBT
Repayments of secured debt						$ 18,600,000
Loans Payable | Minimum | Term Sheet
DEBT
Proceeds from issuance of equity			$ 33,500,000
Loans Payable | Nautilus Joint Venture
DEBT
Upfront fee		$ 1,200,000
Loans Payable | One Term Loan Investor, NovaWulf Digital Master Fund, L.P. | Nautilus Joint Venture
DEBT
Interest rate		11.50%
Interest rate in case default		13.50%
Prepayment incremental amount		$ 5,000,000
Prepayment fees after 1st anniversary		3.00%
Prepayment fees after 2nd anniversary		2.00%
New Term Facility
DEBT
Funds drawn at closing					$ 15,000,000
Percentage of cash interest					8.50%
Issuance costs					$ 1,500,000
Upfront fee					100,000
Additional term loan facility					$ 50,000,000
Number of tranches | tranche					3
Warrants issued to lenders (in shares) | shares					5,787,732
Exercise price of warrants (in dollars per share) | $ / shares					$ 0.01
Percentage of outstanding common stock					5.00%
New Term Facility | Corporate Joint Venture
DEBT
Percentage of ownership interest					25.00%
New Term Facility | Second Tranche
DEBT
Warrants issued as a percentage of diluted equity					3.75%
Value of warrants					$ 15,000,000
New Term Facility | Third Tranche
DEBT
Warrants issued as a percentage of diluted equity					4.25%
Value of warrants					$ 20,000,000
New Term Facility | Maximum
DEBT
Remaining line of credit					$ 35,000,000
First Amendment Term Loan
DEBT
Effective interest rate of debt						13.10%
Percentage of outstanding common stock					2.00%
First Amendment Term Loan | Interest Expense
DEBT
Fees paid to lenders and the allocated value of the common stock warrants						$ 3,500,000
Delayed Draw Term Loan
DEBT
Percentage of outstanding common stock					3.00%
Delayed Draw Term Loan | Delayed Draw Term Loan
DEBT
Loan amount				$ 15,000,000
Fifth Amendment Term Loan
DEBT
Effective interest rate of debt						28.50%
Fifth Amendment Term Loan | Interest Expense
DEBT
Fees paid to lenders and the allocated value of the common stock warrants	$ 16,000,000
Term loan | NovaWolf Digital Master Fund & NovaWulf Digital Private Fund
DEBT
Loan amount						$ 6,700,000		$ 12,900,000

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