Statements of Consolidated Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
Statements of Consolidated Comprehensive Income - (unaudited) [Abstract]
Net income		$ 10,965	$ 11,524
Unrealized gains (losses) on investment securities:
Unrealized holding gains (losses) arising during period, net of tax (1)	[1]	91	(824)
Less adjustment for impaired investments, net of tax (2)	[2]	(125)	(9)
Less reclassification adjustment for gains realized in net income, net of tax (3)	[3]	1,095	594
Unrealized gains (losses) on investment securities, net of tax		(879)	(1,409)
Unrecognized benefit obligation expense:
Actuarial gain (loss), net of tax		(634)	73
Reclassification adjustment for amortization (4)	[4]	173	275
Unrecognized benefit obligation, net of tax		(461)	348
Unrealized gain (loss) on derivative instrument, net of tax (5)	[5]	40	(366)
Other comprehensive income (loss)		(1,300)	(1,427)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total		9,665	10,097
Less net income (loss) attributable to noncontrolling interest		590	531
Comprehensive income		$ 9,075	$ 9,566

[1] Net of $47 thousand tax expense and $603 thousand tax benefit for 2016 and 2015, respectively.

[2] Amounts are included in total other-than-temporary impairment on AFS investment securities on the Consolidated Statements of Income in total non-interest income, net of a $65 thousand and $5 thousand tax benefit for 2016 and 2015, respectively.

[3] Amounts are included in net gains on the sale of AFS investment securities on the Consolidated Statements of Income in total non-interest income, net of $336 thousand and $306 thousand in taxes for 2016 and 2015, respectively.

[4] Amounts are included in salaries and benefits on the Consolidated Statements of Income in non-interest expense.

[5] Net of $21 thousand tax expense and $189 thousand tax benefit for 2016 and 2015, respectively.