Accumulated Other Comprehensive Income Change in other comprehensive income for the period (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 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 6 months ended June 30, 2013 and 2014, respectively)	1,890	(3,610)	3,537	(3,825)
Reclassification adjustment (net of tax, $127 and $44 for 6 months ended June 30, 2013 and 2014, respectively)			(85)	(246)
Unrealized gain (loss) on interest rate swaps (net of tax, $105 and $53 for 6 months ended June 30, 2013 and 2014, respectively)			(108)	204
Reclassification adjustment, (net of tax of $3)	5	0	5	0
Balance end of period	3,581	2,600	3,581	2,600
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 6 months ended June 30, 2013 and 2014, respectively)			3,537	(3,825)
Reclassification adjustment (net of tax, $127 and $44 for 6 months ended June 30, 2013 and 2014, respectively)			(85)	(246)
Unrealized gain (loss) on interest rate swaps (net of tax, $105 and $53 for 6 months ended June 30, 2013 and 2014, respectively)			0	0
Reclassification adjustment, (net of tax of $3)			0
Balance end of period	3,713	2,700	3,713	2,700
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 6 months ended June 30, 2013 and 2014, respectively)			0	0
Reclassification adjustment (net of tax, $127 and $44 for 6 months ended June 30, 2013 and 2014, respectively)			0	0
Unrealized gain (loss) on interest rate swaps (net of tax, $105 and $53 for 6 months ended June 30, 2013 and 2014, respectively)			(108)	204
Reclassification adjustment, (net of tax of $3)			5
Balance end of period	$ (132)	$ (100)	$ (132)	$ (100)