Reinsurance - Summary of Reinsurance Agreements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Premiums Earned, Net [Abstract]
Premiums earned, direct	$ 1,167,592	$ 1,199,824	$ 1,155,240
Premiums earned, assumed	9,858	10,848	5,085
Premiums earned, ceded	(163,031)	(188,729)	(129,337)
Net Amount	1,014,419	1,021,943	1,030,988
Policyholder Benefits and Claims Incurred, Net [Abstract]
Losses incurred, direct	74,496	442,194	130,100
Losses incurred, assumed	(57)	555	(125)
Losses incurred, ceded	(9,862)	(77,975)	(11,400)
Net losses incurred	$ 64,577	$ 364,774	$ 118,575