Accumulated Other Comprehensive Income (Amounts Reclassified Out Of Each Component Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Net gain on disposal of investment securities	$ 892		$ 331
Income tax expense	(353)		(131)
Net of tax	539		200
Amortization of prior service benefit	12		12
Amortization of actuarial losses	341		347
Total before tax	329		335
Income tax expense	(130)		(133)
Pension and post-retirement obligations, net, Net-of-tax Amount	199		202
Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Pension and post-retirement obligations, net, Net-of-tax Amount	199
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Realized Gain on Sale of Investment Securities [Member]
Net gain on disposal of investment securities	892
Income tax expense	(353)
Net of tax	(539)
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Pension And Post-Retirement Obligations [Member]
Amortization of prior service benefit	(12)	[1]
Amortization of actuarial losses	341	[1]
Total before tax	329
Income tax expense	$ (130)

[1] These items are included in the computation of net periodic pension cost. See Note 10 - Employee Benefit Plans for additional information.