Accumulated Other Comprehensive Income (Amounts reclassified out of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net realized investment gains	$ 160	$ 7
Tax (expense) or benefit	399	(360)
Net Income (Loss)	(316)	941	$ 3,063
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Net realized investment gains	160	18
Total before tax	160	18
Tax (expense) or benefit	(54)	(6)
Net Income (Loss)	$ 106	$ 12