Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income	$ 14,092	$ 14,942	$ 15,833
Other Comprehensive Income (Loss), Net of Tax
Unrealized holding gain (loss) on available for sale securities net of tax of $296 in 2017, ($431) in 2016 and ($571) in 2015	546	(800)	(1,064)
Reclassification adjustment for gain included in net income, net of tax of ($4) in 2017, ($65) in 2016 and ($12) in 2015	(6)	(121)	(21)
Net pension gain (loss) arising during the period, net of tax of $115 in 2017, $132 in 2016 and ($597) in 2015	213	271	(1,108)
Less amortization of prior service cost included in net periodic pension cost, net of tax of ($38) in 2017, ($38) in 2016 and ($38) in 2015	(71)	(72)	(72)
Other comprehensive income (loss), net of tax of $369 in 2017, ($402) in 2016 and ($1,218) in 2015	682	(722)	(2,265)
Total Comprehensive Income	$ 14,774	$ 14,220	$ 13,568