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Consolidated Statement in Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Consolidated Statement of Changes in Comprehensive Income [Abstract]
Net income	$ 11,626	$ 13,385	$ 13,375
Securities available for sale
Net unrealized gain (loss) during the period	(920)	5,465	(9,955)
Income tax expense (benefit)	(314)	1,857	(3,384)
Securities available for sale	(606)	3,608	(6,571)
Reclassification adjustment for gains included in income	(429)	(616)	(441)
Income tax (benefit)	(146)	(209)	(150)
Reclassification	(283)	(407)	(291)
Unrealized gain on interest rate swap	0	0	200
Income tax expense	0	0	68
Other comprehensive gain on interest rate swap	0	0	132
Change in unrecognized pension costs	(172)	(1,832)	1,325
Income tax (benefit) expense	(58)	(623)	451
Pension costs	(114)	(1,209)	874
Net other comprehensive income (loss)	(1,003)	1,992	(5,856)
Comprehensive income	$ 10,623	$ 15,377	$ 7,519

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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