Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 4,698	$ 5,165	$ 15,093	$ 14,988
Other comprehensive income:
Unrealized gain (loss) on securities (net of tax expense of $(27) and $(125) in 2015 and tax benefit of $100 and $386 in 2014)	40	(144)	181	(558)
Accretion of unrealized loss on securities reclassified to held-to-maturity (net of tax expense of $152 and $415 in 2015 and $142 and $375 in 2014, respectively)	221	206	602	542
Reclassification adjustment for gains included in net income (net of tax expense of $241 and $383 in 2014)		(349)		(554)
Total comprehensive income	$ 4,959	$ 4,878	$ 15,876	$ 14,418