Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Summary Of Significant Accounting Policies [Line Items]
Gross carrying amount of property and equipment	$ 59,000		$ 59,000		$ 52,900
Accumulated amortization	32,900		32,900		$ 24,700
Depreciation expense	3,800	$ 3,100	11,500	$ 8,900
General and administrative	56,198	63,123	178,435	209,157
Reportable Segment
Summary Of Significant Accounting Policies [Line Items]
Other segment items	3,900	11,100	12,800	67,700
Platform Support Costs | Reportable Segment
Summary Of Significant Accounting Policies [Line Items]
General and administrative	$ 38,700	$ 42,400	$ 120,300	$ 129,800