Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net unrealized gain (loss) on cashflow hedge	$ 270	$ (759)	$ 1,059	$ (3,079)
Net unrealized gain (loss) on cashflow hedge, deferred tax	100	(281)	392	(1,139)
Net unrealized gain (loss) on available for sale debt securities	2,983	2,570	3,286	3,613
Net unrealized gain (loss) on available for sale debt securities, deferred taxes	1,104	951	1,216	1,337
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	90	383	32	775
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	33	142	12	287
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	348	0	348	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	$ 129	$ 0	$ 129	$ 0