Accumulated Other Comprehensive Income Change in other comprehensive income for the period (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period			$ 232	$ 6,467
Unrealized holding gains (losses) (net of tax, $1,972 and $1,822 for 9 months ended September 30, 2013 and 2014, respectively)	173	(1,748)	3,710	(5,572)
Reclassification adjustment (net of tax, $127 and $44 for 6 months ended September 30, 2013 and 2014, respectively)			(93)	(262)
Unrealized gain (loss) on interest rate swaps (net of tax, $105 and $53 for 6 months ended September 30, 2013 and 2014, respectively)			(27)	200
Reclassification adjustment, (net of tax of $3)	(5)	0	0	0
Balance end of period	3,822	833	3,822	833
Unrealized Gains on Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period			261	6,771
Unrealized holding gains (losses) (net of tax, $1,972 and $1,822 for 9 months ended September 30, 2013 and 2014, respectively)			3,710	(5,572)
Reclassification adjustment (net of tax, $127 and $44 for 6 months ended September 30, 2013 and 2014, respectively)			(93)	(262)
Unrealized gain (loss) on interest rate swaps (net of tax, $105 and $53 for 6 months ended September 30, 2013 and 2014, respectively)			0	0
Balance end of period	3,878	937	3,878	937
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period			(29)	(304)
Unrealized holding gains (losses) (net of tax, $1,972 and $1,822 for 9 months ended September 30, 2013 and 2014, respectively)			0	0
Reclassification adjustment (net of tax, $127 and $44 for 6 months ended September 30, 2013 and 2014, respectively)			0	0
Unrealized gain (loss) on interest rate swaps (net of tax, $105 and $53 for 6 months ended September 30, 2013 and 2014, respectively)			(27)	200
Balance end of period	$ (56)	$ (104)	$ (56)	$ (104)