Income Taxes - Carrying amounts of assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax liabilities
Operating lease assets	$ (6,068)	$ (5,375)
Other	(105)	(101)
Total deferred tax liabilities	(6,173)	(5,476)
Deferred tax assets
Investment in partnership ("Outside Basis Deferred Tax Asset")	216,572	194,764
Capital loss carryforward	131,371	132,248
Tax Receivable Agreement liability	37,639	40,702
Operating lease liabilities	6,482	5,678
Business interest expense carryforward	21,164	5,597
Net operating loss and tax credit carryforward	17,472	2,061
Other investments	17,011	17,011
Other reserves	1,207	1,195
Gross deferred tax assets	448,918	399,256
Valuation allowance	(227,605)	(192,686)
Net deferred tax assets	$ 215,140	$ 201,094