Reinsurance - Net Premiums Written and Earned, Insurance (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Ceded Credit Risk [Line Items]
Direct premiums written	$ 250,380	$ 260,619
Ceded premiums written	5,664	(8,835)
Premiums written, net	257,376	254,082
Direct premiums earned	267,458	302,721
Ceded premiums earned	(14,599)	(33,147)
Premiums earned, net	254,190	271,872
Ceding commissions earned	5,134	10,407
Ceded losses	(12,767)	3,746
Deferred ceding commissions	34,600		$ 38,600
Mortgage
Ceded Credit Risk [Line Items]
Direct premiums written	241,218	253,314
Assumed premiums written	1,332	2,298
Ceded premiums written	5,810	(8,737)
Direct premiums earned	258,296	295,416
Assumed premiums earned	1,331	2,298
Ceded premiums earned	(14,453)	(33,049)
homegenius
Ceded Credit Risk [Line Items]
Direct premiums written	9,162	7,305
Ceded premiums written	(146)	(98)
Direct premiums earned	9,162	7,305
Ceded premiums earned	$ (146)	$ (98)