Condensed 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	$ 9,709	$ 8,198	$ 27,771	$ 21,206
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 $1,070 and $(505), and for nine months of $793 and $2,574, respectively	1,724	(812)	1,306	4,147
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 nine months of $9 and $0, respectively	0	0	(14)	0
Total other comprehensive income (loss)	1,724	(812)	1,292	4,147
Total comprehensive income	$ 11,433	$ 7,386	$ 29,063	$ 25,353