Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 11,688	$ 16,605	$ 14,992
Other comprehensive income (loss):
Unrealized holding gain (loss) on available for sale securities arising during the period, net of tax of $263, $(2,146), and $(992), respectively	489	(3,983)	(1,844)
Reclassification adjustment for net realized gain included in net income, net of tax of $7, $1,399, and $60, respectively	(13)	(2,599)	(111)
Change in unfunded portion of postretirement benefit obligations, net of tax of $(1), $211, and $(74), respectively	(1)	392	(138)
Other comprehensive income (loss)	475	(6,190)	(2,093)
Comprehensive income	$ 12,163	$ 10,415	$ 12,899