Reinsurance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Premium written:
Direct	$ 17,469	$ 14,254	$ 29,456	$ 24,660
Assumed	1,351	460	2,198	858
Ceded	(4,499)	(5,870)	(10,375)	(9,441)
Net premium written	14,321	8,844	21,279	16,077
Premium earned:
Direct	13,289	11,248	25,959	22,418
Assumed	755	460	1,603	858
Ceded	(5,816)	(4,196)	(11,162)	(7,543)
Net premium earned	8,228	7,512	16,400	15,733
Losses and LAE incurred:
Direct	6,015	3,743	10,846	13,456
Assumed	2,449	1,627	3,203	1,778
Ceded	(6,081)	(3,532)	(8,035)	(6,760)
Net losses and LAE incurred	$ 2,383	$ 1,838	$ 6,014	$ 8,474