Accumulated Comprehensive Loss, Reclassification (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
AOCI Attributable to Parent [Abstract]
Available for sale securities gains, net		$ 11	$ 6
Provision for income taxes		(821)	(747)
NET INCOME		4,405	4,247
Amount Reclassified from Accumulated Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent [Abstract]
NET INCOME	[1]	(48)	(37)
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	0
Provision for income taxes	[1]	0	0
NET INCOME	[1]	0	0
Defined Benefit Pension Items [Member] | Amount Reclassified from Accumulated Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent [Abstract]
Other expenses	[1]	(61)	(46)
Provision for income taxes	[1]	13	9
NET INCOME	[1]	$ (48)	$ (37)

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