Accumulated Comprehensive Income, Reclassification (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2017	Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net		$ 172	$ 27
Salaries and employee benefits		(4,319)	(3,882)
Provision for income taxes		(923)	(791)
NET INCOME		3,303	3,283
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
NET INCOME	[1]	75	(22)
Unrealized Gains and Losses on Available for Sale Securities [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net	[1]	172	27
Provision for income taxes	[1]	(58)	(9)
NET INCOME	[1]	114	18
Defined Benefit Pension Items [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	[1]	(60)	(60)
Provision for income taxes	[1]	21	20
NET INCOME	[1]	$ (39)	$ (40)

[1] Amounts in parentheses indicate expenses and other amounts indicate income on the Consolidated Statement of Income