Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net unrealized gain (loss) on cashflow hedge	$ 1,645	$ 2,556	$ 459
Net unrealized gain (loss) on cashflow hedge, deferred taxes	395	946	170
Net unrealized gain (loss) on available for sale debt securities	(4,920)	4,378	(4,913)
Net unrealized gain (loss) on available for sale debt securities, deferred taxes	(1,181)	1,620	(1,818)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	622	(14)	1,127
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	149	(5)	417
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	(341)	521	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax	$ (82)	$ 193	$ 0