Reinsurance - Net Premiums Written and Earned, Insurance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Ceded Credit Risk [Line Items]
Direct premiums written	$ 250,925	$ 248,849	$ 501,305	$ 509,468
Ceded premiums written	3,164	(11,767)	8,828	(20,602)
Premiums written, net	255,627	238,697	513,003	492,779
Direct premiums earned	263,947	282,507	531,405	585,228
Ceded premiums earned	(11,594)	(29,366)	(26,193)	(62,513)
Premiums earned, net	253,892	254,756	508,082	526,628
Ceding commissions earned	3,424	7,919	8,558	18,326
Ceded losses	(15,093)	(1,078)	(27,860)	2,668
Deferred ceding commissions	31,700		31,700		$ 38,600
Mortgage
Ceded Credit Risk [Line Items]
Direct premiums written	243,808	241,010	485,026	494,324
Assumed premiums written	1,538	1,615	2,870	3,913
Ceded premiums written	3,298	(11,599)	9,108	(20,336)
Direct premiums earned	256,830	274,668	515,126	570,084
Assumed premiums earned	1,539	1,615	2,870	3,913
Ceded premiums earned	(11,460)	(29,198)	(25,913)	(62,247)
homegenius
Ceded Credit Risk [Line Items]
Direct premiums written	7,117	7,839	16,279	15,144
Ceded premiums written	(134)	(168)	(280)	(266)
Direct premiums earned	7,117	7,839	16,279	15,144
Ceded premiums earned	$ (134)	$ (168)	$ (280)	$ (266)