Consolidated Statements of Comprehensive Income (unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net unrealized gain (loss) on cashflow hedge	$ (12)	$ 941
Net unrealized gain (loss) on cashflow hedge, deferred tax	(3)	226
Net unrealized gain (loss) on available for sale debt securities	3,246	(4,388)
Net unrealized gain (loss) on available for sale debt securities, deferred taxes	779	(1,053)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	(3)	732
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	(1)	176
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, before Tax	(432)	0
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax	$ (104)	$ 0