Accumulated Comprehensive Loss, Reclassification (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
AOCI Attributable to Parent [Abstract]
Available for sale securities gains, net				$ 13	$ 195
Salaries and employee benefits		$ (4,737)	$ (4,377)	(9,572)	(8,743)
Provision for income taxes		(875)	(1,033)	(1,622)	(1,956)
NET INCOME		4,691	3,468	8,938	6,771
Amount Reclassified from Accumulated Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent [Abstract]
NET INCOME	[1]	(37)	(20)	(74)	55
Unrealized Gains and Losses on Available for Sale Securities [Member] | Amount Reclassified from Accumulated Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent [Abstract]
Available for sale securities gains, net	[1]	0	23	0	195
Provision for income taxes	[1]	0	(8)	0	(66)
NET INCOME	[1]	0	15	0	129
Defined Benefit Pension Items [Member] | Amount Reclassified from Accumulated Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent [Abstract]
Salaries and employee benefits	[1]	(47)	(52)	(93)	(112)
Provision for income taxes	[1]	10	17	19	38
NET INCOME	[1]	$ (37)	$ (35)	$ (74)	$ (74)

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