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Fair Value Measurements - Gain (Loss) on Financial Instruments (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		$ (523)	$ (18,024)	$ (1,885)	$ (64,260)
Other comprehensive income (loss), reclassification adjustment from AOCI for transfer of securities, net of tax					13,694
Related party equity securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		0	0	0	(3,702)
Other public equity securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		(419)	(189)	(431)	(925)
Put options
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net	$ (700)	0	0	0	(3,023)
Loss on initial issuance of convertible debt and warrant issuance to Yorkville
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		(607)	0	(2,307)	0
Convertible debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		(92)	0	133	0
Warrants liability
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		603	795	1,311	2,494
Prepaid forward liability
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		0	61	14	(12)
Derivative liability
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		0	0	0	1,581
Related party, with a readily determinable fair value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		(8)	(18,691)	(546)	(60,515)
Other, without a readily determinable fair value | Without Readily Determinable Fair Value
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loss on financial instruments, net		$ 0	$ 0	$ (59)	$ (158)

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