Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net unrealized gain (loss) on cashflow hedge	$ 497	$ 965	$ 1,556	$ (2,114)
Net unrealized gain (loss) on cashflow hedge, deferred tax	184	357	576	(782)
Net unrealized gain (loss) on available for sale debt securities	608	(1,437)	3,892	2,175
Net unrealized gain (loss) on available for sale debt securities, deferred taxes	225	(532)	1,440	805
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	26	61	58	836
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	10	23	21	309
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, before Tax	0	0	348	0
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Tax	$ 0	$ 0	$ 129	$ 0