Loss and Loss Adjustment Expense Reserves (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Balance at beginning of period			$ 57,093	$ 52,222
Less reinsurance recoverable			(33,941)	(28,837)
Net balance at beginning of period			23,152	23,385
Incurred related to:
Total incurred	$ 27,480	$ 4,443	62,383	12,214
Paid related to:
Current year			26,648	4,155
Prior years			(12,022)	11,422
Total paid			14,626	15,577
Net balance at end of period	70,798	19,796	70,798	19,796
Plus reinsurance recoverable	0	(33,583)	0	(33,583)
Balance at end of period	$ 70,798	$ 53,379	70,798	53,379
Property, Liability and Casualty Insurance Product Line
Incurred related to:
Current year			60,940	10,774
Prior years			1,332	1,214
Total incurred			$ 62,272	$ 11,988