Schedule III - Supplemental Insurance Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Supplementary Insurance Information, by Segment [Line Items]
Deferred policy acquisition costs	$ 4,592	$ 4,163
Future policy benefits, losses, claims and loss expenses	51,074	52,817
Unearned premiums	26,556	24,778
Other policy and benefits payable	327	110
Net premiums earned	44,213	42,611
Net investment income	2,632	1,968
Benefits, claims, losses and settlement expenses	29,010	24,345
Amortization of DAC	7,561	7,125
Other operating expenses	10,527	9,414
Net premiums written	45,987	43,227
Commercial Business [Member]
Supplementary Insurance Information, by Segment [Line Items]
Deferred policy acquisition costs	4,592	4,163
Future policy benefits, losses, claims and loss expenses	51,074	52,817
Unearned premiums	26,556	24,778
Other policy and benefits payable	327	110
Net premiums earned	44,213	42,611
Net investment income	2,632	1,968
Benefits, claims, losses and settlement expenses	29,010	24,345
Amortization of DAC	7,561	7,125
Other operating expenses	10,527	9,414
Net premiums written	$ 45,987	$ 43,227