Condensed 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	$ 8,716	$ 7,160	$ 18,062	$ 13,008
Other comprehensive income, net of tax:
Unrealized gains on investment securities arising during the period, net of income tax expense for three months of $(1,322) and $1,988, and for six months of $(277) and $3,079, respectively	(2,130)	3,202	(418)	4,959
Less: Reclassification adjustment for realized gains on sale of securities available for sale included in net income, net of income tax expense for three months of $0, and $0, and for six months of $9 and $0, respectively	0	0	(14)	0
Total other comprehensive income (loss)	(2,130)	3,202	(432)	4,959
Total comprehensive income	$ 6,586	$ 10,362	$ 17,630	$ 17,967