Accumulated Other Comprehensive Income Change in other comprehensive income for the period (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period	$ 232	$ 6,467
Unrealized holding gains (losses) (net of tax, $111 and $848 for 3 months ended March 31, 2013 and 2014, respectively)	1,647	(215)
Reclassification adjustment (net of tax, $16 and $21 for 3 months ended March 31, 2013 and 2014, respectively)	(42)	(31)
Unrealized gain (loss) on interest rate swaps (net of tax, $20 and $4 for 3 months ended March 31, 2013 and 2014, respectively)	(9)	39
Balance end of period	1,828	6,260
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, $111 and $848 for 3 months ended March 31, 2013 and 2014, respectively)	1,647	(215)
Reclassification adjustment (net of tax, $16 and $21 for 3 months ended March 31, 2013 and 2014, respectively)	(42)	(31)
Unrealized gain (loss) on interest rate swaps (net of tax, $20 and $4 for 3 months ended March 31, 2013 and 2014, respectively)	0	0
Balance end of period	1,866	6,525
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance beginning of period	(29)	(304)
Unrealized holding gains (losses) (net of tax, $111 and $848 for 3 months ended March 31, 2013 and 2014, respectively)	0	0
Reclassification adjustment (net of tax, $16 and $21 for 3 months ended March 31, 2013 and 2014, respectively)	0	0
Unrealized gain (loss) on interest rate swaps (net of tax, $20 and $4 for 3 months ended March 31, 2013 and 2014, respectively)	(9)	39
Balance end of period	$ (38)	$ (265)