Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Reclassification out of Accumulated Other Comprehensive Income [Line Items]
INCOME BEFORE PROVISION FOR INCOME TAXES	$ 8,742		$ 7,933		$ 24,293		$ 22,636
Provision for Income Taxes	2,595		2,310		7,302		6,625
Net Income	25	[1]	(236)	[1]	(104)	[1]	(382)	[1]
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	137	[1]	0	[1]	110	[1]	540	[1]
INCOME BEFORE PROVISION FOR INCOME TAXES	137	[1]	0	[1]	110	[1]	540	[1]
Provision for Income Taxes	(55)	[1]	0	[1]	(44)	[1]	(214)	[1]
Net Income	82	[1]	0	[1]	66	[1]	326	[1]
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	22	[1],[2]	(1)	[1],[2]	65	[1],[2]	(1)	[1],[2]
Amortization of Net Retirement Plan Actuarial Loss, Before-Tax Amount	(116)	[1],[2]	(390)	[1],[2]	(346)	[1],[2]	(1,173)	[1],[2]
INCOME BEFORE PROVISION FOR INCOME TAXES	(94)	[1]	(391)	[1]	(281)	[1]	(1,174)	[1]
Provision for Income Taxes	37	[1]	155	[1]	111	[1]	466	[1]
Net Income	$ (57)	[1]	$ (236)	[1]	$ (170)	[1]	$ (708)	[1]

[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 (see pension footnote for additional details.).