Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 3,665	$ 3,479	$ 7,193	$ 6,869
Other Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, net of taxes of $6,061 and $(561) for three months ended June 30, 2013 and 2012, respectively and $6,761 and $(730) for six months ended June 30 2013 and 2012, respectively.	(9,488)	878	(10,584)	1,144
Less: reclassification adjustment for realized gains included in net income net of taxes of $188 and $171 for three months ended June 30, 2013 and 2012, respectively and $326 and $321 for six months ended June 30, 2013 and 2012, respectively.	(294)	(268)	(509)	(502)
Unrealized gains on available-for-sale securities for which a portion of an other-than-temporary impairment has been recognized in income, net of taxes of $0 and $2 for three months ended June 30, 2013 and 2012, respectively and $0 for six months ended June 30, 2013 and 2012, respectively.	0	4	0	0
Other comprehensive income (loss), net of taxes	(9,782)	614	(11,093)	642
Comprehensive income (loss)	$ (6,117)	$ 4,093	$ (3,900)	$ 7,511