Deferred Policy Acquisition Costs - Activity in Deferred Policy Acquisition Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance at beginning of period	$ 12,459	$ 11,508	$ 12,243	$ 11,906
Deferred policy acquisition costs	7,558	6,580	14,524	12,485
Amortization of policy acquisition costs	(6,896)	(6,395)	(13,646)	(12,698)
Net change	662	185	878	(213)
Balance at end of period	$ 13,121	$ 11,693	$ 13,121	$ 11,693