Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 21,014	$ 9,575	$ 13,261
Change in fair value of securities available for sale, net of tax of $2,531, $(1,596) and $(34), respectively	4,676	(2,965)	(63)
Reclassification adjustment of net (gain) loss from sale of available for sale securities included in net income, net of tax of $(101), $0 and $0, respectively	(186)	0	0
Other-than-temporary impairment on securities held to maturity, net of tax of $0, $0 and $(18), respectively	0	0	(34)
Accretion of other-than-temporary impairment on securities held to maturity, net of tax of $28, $31 and $57, respectively	50	59	105
Other comprehensive income (loss)	4,540	(2,906)	8
Comprehensive income	$ 25,554	$ 6,669	$ 13,269