Segment Information - Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Adjusted EBITDA	$ 26,748	$ 31,483			$ 73,312	$ 95,094
Settlement charge	(55,000)				(55,000)
Impairment charge - leased assets		(2,513)		$ (3,700)		(6,248)
Loss on lease termination			$ (2,500)			(2,460)
Equity-based compensation expense	(4,891)	(7,834)			(14,050)	(18,006)
Acquisition-related expense	(59)	(412)			(160)	(1,997)
Fair value adjustments to contingent consideration	280	692			379	(1,303)
Restructuring charges	(4,278)	(8,092)			(4,245)	(8,092)
Gain on reduction in tax receivable agreement liability	24,917				24,917
Other	(395)	308			(1,471)	(727)
Interest income	1,173	497			3,318	675
Interest expense	(9,292)	(5,729)			(26,377)	(13,412)
Depreciation and amortization	(8,195)	(8,757)			(24,236)	(26,855)
Income (loss) before provision for income taxes	(28,992)	(357)			(23,613)	16,669
Real Estate
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Adjusted EBITDA	28,400	32,894			79,813	99,904
Mortgage
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Adjusted EBITDA	(1,486)	(1,270)			(5,540)	(4,607)
Other.
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated
Adjusted EBITDA	$ (166)	$ (141)			$ (961)	$ (203)