Segment Information - Consolidated Financial Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment adjusted EBITDA (loss)	$ 22,217	$ 4,686	$ (14,729)	$ 7,828
Reconciling items:
Corporate and other	(13,378)	(15,592)	(41,448)	(44,094)
Depreciation and amortization	(6,272)	(8,675)	(18,501)	(21,574)
Stock-based compensation expense	(6,979)	(5,089)	(20,277)	(20,645)
Restructuring costs	(712)	0	(2,789)	0
Acquisition and other transaction costs	(22)	(261)	(408)	(1,583)
Impairment loss on intangible assets and goodwill	0	(57,057)	(57,232)	(57,057)
Recovery of (loss on) reinsurance contract (see Note 10)	7,043
Recovery of (loss on) reinsurance contract (see Note 10)		0	(41,201)	0
Impairment loss on property, equipment and software	0	(30)	(254)	(101)
Change in fair value of contingent consideration	787	(565)	3,597	(5,251)
Investment income and realized gains	(2,485)	(335)	(4,492)	(775)
Operating income (loss)	199	(82,918)	(197,734)	(143,252)
Vertical Software segment | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment adjusted EBITDA (loss)	3,179	5,545	4,599	14,081
Insurance segment | Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segment adjusted EBITDA (loss)	$ 19,038	$ (859)	$ (19,328)	$ (6,253)