Deferred Policy Acquisition Costs - Activity in Deferred Policy Acquisition Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Movement Analysis of Deferred Policy Acquisition Costs [Roll Forward]
Balance at beginning of period	$ 11,508	$ 12,153	$ 11,906	$ 12,011
Deferred policy acquisition costs	6,580	6,359	12,485	12,090
Amortization of policy acquisition costs	(6,395)	(6,210)	(12,698)	(11,799)
Net change	185	149	(213)	291
Balance at end of period	$ 11,693	$ 12,302	$ 11,693	$ 12,302