Accumulated Comprehensive Income (Loss), Reclassification (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net	$ 9	$ 0	$ 204	$ 155
Salaries and employee benefits	(4,237)	(4,285)	(12,880)	(12,067)
Provision for income taxes	(1,141)	(767)	(3,097)	(2,245)
NET INCOME	3,650	3,153	10,421	9,467
Amount Reclassified from Accumulated Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
NET INCOME	(31)	(40)	24	(17)
Unrealized Gains and Losses on Available for Sale Securities [Member] | Amount Reclassified from Accumulated Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Investment securities gains, net	9	0	204	155
Provision for income taxes	(3)	0	(69)	(53)
NET INCOME	6	0	135	102
Defined Benefit Pension Items [Member] | Amount Reclassified from Accumulated Comprehensive Income (Loss) [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	(56)	(61)	(168)	(181)
Provision for income taxes	19	21	57	62
NET INCOME	$ (37)	$ (40)	$ (111)	$ (119)