Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Statement of Other Comprehensive Income [Abstract]
Net income	$ 3,910	$ 3,647	$ 11,103	$ 10,516
Other Comprehensive Income [Abstract]
Unrealized gains (losses) on available-for-sale securities, net of taxes of $(329) and $(1,066) for three months ended September 30, 2013 and 2012, respectively and $6,432 and $(1,796) for nine months ended September 30 2013 and 2012, respectively.	516	1,669	(10,068)	2,813
Less: reclassification adjustment for realized gains included in net income net of taxes of $567 and $43 for three months ended September 30, 2013 and 2012, respectively and $893 and $364 for nine months ended September 30, 2013 and 2012, respectively.	(889)	(67)	(1,398)	(569)
Other comprehensive income (loss), net of taxes	(373)	1,602	(11,466)	2,244
Comprehensive income (loss)	$ 3,537	$ 5,249	$ (363)	$ 12,760