Accumulated Other Comprehensive Income Change in other comprehensive income for period (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Equity [Abstract]
Unrealized holding gains, tax	$ 916	$ (974)	$ 333	$ (1,822)
Reclassification adjustment, tax	13	22	47	44
Unrealized loss on interest rate swaps tax	(29)	49	0	53
Reclassification adjustment, derivative, tax	$ 0	$ (3)	$ 2	$ (3)