Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 5,133	$ 5,117	$ 10,395	$ 9,824
Other comprehensive income:
Unrealized gain (loss) on securities (net of tax expense of $1 and $98 in 2015 and tax benefit of $209 and $286 in 2014)	2	(303)	141	(414)
Accretion of unrealized loss on securities reclassified to held-to-maturity (net of tax expense of $138 and $263 in 2015 and $125 and $233 in 2014, respectively)	199	181	381	337
Reclassification adjustment for gains included in net income (net of tax expense of $142 in 2014)		(206)		(206)
Total comprehensive income	$ 5,334	$ 4,789	$ 10,917	$ 9,541