Reinsurance - Quota Share Reinsurance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Effects of Reinsurance [Line Items]
Ceded losses incurred	$ 9,862	$ 77,975	$ 11,400
Quota Share Reinsurance Agreements
Effects of Reinsurance [Line Items]
Ceded premiums written and earned, net of profit commission	118,537	167,930	111,550
Ceded losses incurred	9,862	78,012	11,395
Ceding commisisons	53,460	48,077	48,793
Profit commission	$ 153,759	$ 72,452	$ 139,179