CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 19,831	$ 17,687	$ 15,295
Other comprehensive income (loss), net of tax and reclassification adjustments:
Net unrealized holding (loss) gain on securities available for sale arising during the period, net of tax of ($887), ($766) and $4,060, respectively	(1,334)	(1,201)	6,732
Change in unrealized gain (loss) on securities transferred from available for sale to held to maturity, net of tax of $881, $250 and ($1,180), respectively	1,324	410	(1,805)
Net actuarial adjustment on pension and post-retirement plan benefit obligation, net of tax of ($648), ($628) and ($2,929), respectively	(933)	(942)	(4,481)
Total other comprehensive (loss) income, net of tax	(943)	(1,733)	446
Total comprehensive income	$ 18,888	$ 15,954	$ 15,741