Reinsurance - Effects of Reinsurance and Assumption Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Written premiums:
Direct	$ 19,595	$ 14,954	$ 39,225	$ 33,417
Assumed	7,950	10,215	13,404	15,968
Ceded	(4,480)	(3,735)	(8,513)	(7,629)
Net written premiums	23,065	21,434	44,116	41,756
Earned premiums:
Direct	17,913	17,254	35,371	35,258
Assumed	8,046	7,828	16,641	15,374
Ceded	(4,201)	(3,733)	(8,237)	(7,596)
Net earned premiums	21,758	21,349	43,775	43,036
Losses and LAE:
Direct	10,739	17,434	23,065	34,232
Assumed	4,347	5,741	9,969	10,255
Ceded	(3,141)	(8,793)	(6,820)	(15,649)
Total net incurred losses and LAE	$ 11,945	$ 14,382	$ 26,214	$ 28,838