Consolidated Statements of Comprehensive Income (unaudited) - 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 income	$ 5,278	$ 4,243	$ 3,662	$ 8,305
Other comprehensive income:
Net unrealized gain (loss) on cashflow hedge	170	(478)	667	(1,940)
Net unrealized gain (loss) on available for sale debt securities	1,879	1,619	2,070	2,276
Net unrealized gain (loss) on other post-retirement benefits	219	0	219	0
Other Comprehensive Income (Loss), Net of Tax	2,268	1,141	2,956	336
Total comprehensive income	$ 7,546	$ 5,384	$ 6,618	$ 8,641