Unpaid Losses and Loss Adjustment Expenses - Changes in the Liability for Unpaid Losses and Loss Adjustment Expenses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Gross reserves - beginning of period	$ 139,085	$ 111,270
Less: reinsurance recoverables on unpaid losses	(40,344)	(24,218)
Net reserves - beginning of period	98,741	87,052
Add: incurred losses and LAE, net of reinsurance:
Current period	12,497	13,584
Prior period	5,521	5,778
Total net incurred losses and LAE	18,018	19,362
Deduct: loss and LAE payments, net of reinsurance:
Current period	2,512	3,180
Prior period	13,914	11,117
Total net loss and LAE payments	16,426	14,297
Net reserves - end of period	100,333	92,117
Plus: reinsurance recoverables on unpaid losses	40,605	26,559
Gross reserves - end of period	$ 140,938	$ 118,676