Other Comprehensive Income (Loss) (Component Of Accumulated Other Comprehensive Income (Loss)) (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	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax	$ (2,905)	$ (11,026)	$ 21,128	$ (33,942)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	0	0	0	0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax	0	(11)	13	(11)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	(11)	13	(11)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	(2,905)	(11,015)	21,115	(33,931)
Other comprehensive income (loss)	(2,905)	(11,015)	21,115	(33,931)
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	(2,905)	(11,026)	21,128	(33,942)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax		0		0
Changes in pension plan assets and benefit obligations, Net-of-tax amount	(5,598)	(27,134)	(5,598)	(27,134)	5,598	5,598	27,134	27,134
Unrealized gains on available-for-sale securities, Net-of-tax amount	(8,706)	(24,315)	(8,706)	(24,315)	(5,801)	(29,821)	(13,300)	9,616
Total accumulated other comprehensive income (loss), Net-of-tax amount	(14,304)	(51,449)	(14,304)	(51,449)	(11,399)	(35,419)	(40,434)	(17,518)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax	0			17
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax			$ 20