Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net unrealized gain (loss) on cashflow hedge	$ (2,033)	$ 162	$ (3,063)	$ (2,160)
Net unrealized gain (loss) on cashflow hedge, deferred tax	(752)	60	(1,133)	(799)
Net unrealized gain (loss) on available for sale debt securities	1,041	1,017	(916)	6,441
Net unrealized gain (loss) on available for sale debt securities, deferred taxes	385	376	(339)	2,383
Net unrealized gain on available for sale debt securities, reclassification adjustment for net realized gains included in net income	$ 373	$ 128	$ 1,023	$ 64