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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Amount of unrealized gain (loss) on investment.

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FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands		3 Months Ended		6 Months Ended
	May 21, 2025	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain		$ 43		$ 43
Dividend yield		0.00%
DLOM (as a percent)		4.50%
Valuation Technique, Black-Scholes-Merton Model \| Measurement Input, Expected Dividend Rate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Measurement input		0		0
Money Market Funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust investments		$ 20,100		$ 20,100
Cash and Cash Equivalents
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Restricted trust investments		500		$ 500
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Historical and expected annual volatility (as percent)				100.00%
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Historical and expected annual volatility (as percent)					120.00%
Beowulf E&D
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Dividend yield	0.00%
Historical and expected annual volatility (as percent)	110.00%
Google Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loss on change in fair value of warrants		$ 755,700	$ 0	$ 972,000	$ 0
New Term Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
DLOM (as a percent)		20.00%
Fifth Amendment Term Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
DLOM (as a percent)		30.00%
New Ground Lease
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
DLOM (as a percent)		10.00%
Cayuga Lease
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
DLOM (as a percent)		9.00%
2030 Convertible notes \| Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt		$ 1,532,000		1,532,000
2031 Convertible notes \| Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt		2,155,400		2,155,400
2032 Convertible notes \| Convertible Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt		1,513,700		1,513,700
7.750% Senior Secured Notes due 2030 \| Senior Notes
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of long-term debt		$ 3,356,800		$ 3,356,800