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	$ 11,832	$ 9,709	$ 35,209	$ 27,771
Other comprehensive income (loss), net of tax:
Unrealized gains (losses) on investment securities arising during the period, net of income tax expense (benefit) for three months of $986 and $(1,322), and for six months of $3,290 and $(277), respectively	(796)	1,724	4,503	1,306
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 $0 and $9, respectively	(53)	0	(53)	(14)
Total other comprehensive income (loss)	(849)	1,724	4,450	1,292
Total comprehensive income	$ 10,983	$ 11,433	$ 39,659	$ 29,063