Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2016	Mar. 31, 2015
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
INCOME BEFORE PROVISION FOR INCOME TAXES		$ 9,467	$ 8,530
Provision for Income Taxes		2,918	2,675
Net Income	[1]	(99)	(165)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains and Losses on Available for Sale Securities [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Reclassification Adjustment for Securities Gains Included in Net Income, Before-Tax Amount		0	(90)	[1]
INCOME BEFORE PROVISION FOR INCOME TAXES	[1]	0	(90)
Provision for Income Taxes		0	35	[1]
Net Income	[1]	0	(55)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment [Member]
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
Amortization of Defined Benefit Pension Items, Prior-Service Costs, Before Tax	[1],[2]	3	13
Amortization of Net Retirement Plan Actuarial Loss, Before-Tax Amount	[1],[2]	(166)	(192)
INCOME BEFORE PROVISION FOR INCOME TAXES	[1]	(163)	(179)
Provision for Income Taxes	[1]	64	69
Net Income	[1]	$ (99)	$ (110)

[1] Amounts in parentheses indicate debits to profit/loss.

[2] These accumulated other comprehensive income components are included in the computation of net periodic pension cost.