Segment Information - Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended						12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Adjusted EBITDA							$ 96,288	$ 121,632	$ 119,583
Settlement charge							(55,150)
Loss on contract settlement									(40,900)
Loss on extinguishment of debt									(264)
Impairment charge - leased assets			$ (2,500)		$ (3,700)			(6,248)
Impairment charge - goodwill		$ (7,100)					(18,633)	(7,100)	(5,123)
Loss on lease termination				$ (2,500)				(2,460)
Equity-based compensation expense							(19,536)	(22,044)	(34,298)
Acquisition-related expense							(263)	(1,859)	(17,422)
Fair value adjustments to contingent consideration							533	133	(309)
Restructuring charges							(4,210)	(8,690)
Gain on reduction in tax receivable agreement liability							25,298	702	(382)
Other							(2,131)	(726)	(586)
Interest income							4,420	1,460	217
Interest expense							(35,741)	(20,903)	(11,344)
Depreciation and amortization							(32,414)	(35,769)	(31,333)
Income (loss) before provision for income taxes							(41,539)	18,128	(22,161)
Real Estate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Adjusted EBITDA							104,305	128,301	125,153
Impairment charge - goodwill						$ 5,100		(7,100)
Mortgage
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Adjusted EBITDA							(6,920)	(6,368)	(5,321)
Impairment charge - goodwill	$ (18,600)						(18,633)
Other.
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Adjusted EBITDA							$ (1,097)	$ (301)	$ (249)