Changes in Accumulated Other Comprehensive Income by Component (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Accumulated other comprehensive income — beginning of period	$ 25	$ 49	$ 127
Other comprehensive income before reclassifications	535	(16)	(43)
Amounts reclassified from accumulated other comprehensive income	(17)	(8)	(35)
Net current period change in other comprehensive income	518	(24)	(78)
Accumulated other comprehensive income — end of period	543	25	49
Realized gains from the sale of available for sale securities	$ 27	$ 12	$ 49