Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Net unrealized gain (loss) on cashflow hedge	$ (2,321)	$ (1,412)
Net unrealized gain (loss) on cashflow hedge, deferred tax	(859)	(522)
Net unrealized gain (loss) on available for sale debt securities	1,043	729
Net unrealized gain (loss) on available for sale debt securities, deferred taxes	386	270
Net unrealized gain on available for sale debt securities, reclassification adjustment for net realized gains included in net income	$ 393	$ 480