Reinsurance - Effects of Reinsurance and Assumption Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Written premiums:
Direct	$ 22,340	$ 22,438	$ 66,473	$ 65,067
Assumed	6,157	1,804	17,143	3,438
Ceded	(3,863)	4,357	(10,755)	(10,298)
Net written premiums	24,634	28,599	72,861	58,207
Earned premiums:
Direct	23,057	21,136	67,871	60,487
Assumed	4,196	1,906	8,186	5,716
Ceded	(3,873)	(5,159)	(10,893)	(18,712)
Net earned premiums	23,380	17,883	65,164	47,491
Losses and LAE:
Direct	13,616	10,605	41,460	31,149
Assumed	1,750	1,082	4,106	1,887
Ceded	(784)	(1,874)	(4,744)	(5,677)
Total net incurred losses and LAE	$ 14,582	$ 9,813	$ 40,822	$ 27,359