Accumulated Other Comprehensive Income (Loss) (AOCI Components Pre Post & Tax Effect) (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Loss, Before Tax:
Net Unrealized Gains (Losses) Arising During the Period	$ 8,711	$ 10,697
Other Comprehensive Income (Loss) Reclassification Adjustment for Amortization of Held To Maturity holding Gains before Tax	30	(333)
Net Unrealized Gains (Losses) on Investment Securities	8,741	10,364
Amortization of Net Actuarial Losses	443	339
Amortization of Prior Service Credit	(81)	(81)
Defined Benefit Plans, Net	362	258
Other Comprehensive Income (Loss)	9,103	10,622
Other Comprehensive Loss, Tax Effect:
Net Unrealized Gains (Losses) Arising During the Period	3,435	4,224
The tax effect of other comprehensive income (loss) reclassification for amortization of holding gains/losses on HTM Securities, tax effect.	12	(131)
Tax effect on Unrealized gain/loss on Investment Securities	3,447	4,093
Amortization of Net Actuarial Losses	174	134
Amortization of Prior Service Credit	(32)	(32)
Defined Benefit Plans, Net	142	102
Other Comprehensive Income (Loss)	3,589	4,195
Other Comprehensive Loss, Net of Tax:
Net Unrealized Gains (Losses) Arising During the Period	5,276	6,473
Other Comprehensive Income Reclassification Adjustment for Amortization of Gains on Held To Maturity Securities after Tax	18	(202)
Net Unrealized Gains (Losses) on Investment Securities, net of tax	5,294	6,271
Amortization of Net Actuarial Losses	269	205
Amortization of Prior Service Credit	(49)	(49)
Defined Benefit Plans, Net	220	156
Total Other Comprehensive Income	$ 5,514	$ 6,427