Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Statement of Comprehensive Income [Abstract]
Net unrealized gain (loss) on cashflow hedge	$ (759)	$ 379	$ (3,079)	$ (1,030)
Net unrealized gain (loss) on cashflow hedge, deferred tax	(281)	140	(1,139)	(381)
Net unrealized gain (loss) on available for sale debt securities	2,570	(2,683)	3,613	(1,956)
Net unrealized gain (loss) on available for sale debt securities, deferred taxes	951	(993)	1,337	(724)
Net unrealized gain on available for sale debt securities, reclassification adjustment for net realized gains included in net income	$ 383	$ 170	$ 775	$ 650