CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income:	$ 2,696	$ 2,758	$ 12,830	$ 771
Other comprehensive income, net of tax:
Net unrealized gains on available-for-sale investments	3,257	3,710	3,259	6,956
Reclassification of realized gains included in earnings	(40)	(5,276)	(40)	(5,276)
Total before income taxes	3,217	(1,566)	3,219	1,680
Income tax (expense) benefit	(1,238)	1,057	(1,239)	(216)
Total other comprehensive income (loss), net of tax	1,979	(509)	1,980	1,464
Total comprehensive income, net of tax	$ 4,675	$ 2,249	$ 14,810	$ 2,235