Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Valuation Allowance [Line Items]
Investment in GCMH	$ 93,045	$ 92,656
Unrealized losses	0	2,437
Intangibles and other	1,111	2,423
Total deferred tax assets before valuation allowance	94,156	97,516
Valuation allowance	(40,869)	(38,122)
Total deferred tax assets	53,287	59,394
Right-of-use asset	(612)	(1,096)
Unrealized gains	(1,558)	0
Other deferred tax liability	(430)	0
Total deferred tax liabilities	(2,600)	(1,096)
Deferred tax assets, net	50,687	58,298
Increase (decrease) in deferred liabilities	(2,100)	(1,100)
Accrued Liabilities
Valuation Allowance [Line Items]
Deferred tax assets, net	$ 500
Other Liabilities
Valuation Allowance [Line Items]
Deferred tax assets, net		$ 0

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