Retirement Plans (Components Of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Recognition of actuarial loss (gain)	$ (62,503)	[1]	$ 23,443	[1]	$ 46,652	[1]
Recognition of prior service credit (cost)	(7,675)	[1]	(6,791)	[1]	(2,275)	[1]
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	12,824		10,206		7,303
Interest cost	11,400		10,506		9,693
Expected return on plan assets	(16,127)		(12,872)		(11,283)
Actuarial loss (gain)	8,276		7,395		2,859
Prior service (credit) cost	0		0		(38)
Net periodic benefit cost	16,373		15,235		8,534
Current year actuarial loss (gain)	(61,759)		23,557		46,444
Recognition of actuarial loss (gain)	(8,276)		(7,395)		(2,859)
Recognition of prior service credit (cost)	0		0		38
Total recognized in other comprehensive income	(70,035)		16,162		43,623
Total recognized in net periodic benefit cost and other comprehensive income	(53,662)		31,397		52,157
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0		0		0
Interest cost	70		73		80
Expected return on plan assets	0		0		0
Actuarial loss (gain)	19		14		7
Prior service (credit) cost	0		0		0
Net periodic benefit cost	89		87		87
Current year actuarial loss (gain)	(138)		131		156
Recognition of actuarial loss (gain)	(19)		(14)		(7)
Recognition of prior service credit (cost)	0		0		0
Total recognized in other comprehensive income	(157)		117		149
Total recognized in net periodic benefit cost and other comprehensive income	(68)		204		236
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0		0		0
Interest cost	112		133		164
Curtailment loss	0		0		119
Actuarial loss (gain)	(620)		(618)		(593)
Prior service (credit) cost	0		0		40
Net periodic benefit cost	(508)		(485)		(270)
Current year actuarial loss (gain)	(600)		(235)		182
Recognition of actuarial loss (gain)	620		618		593
Recognition of prior service credit (cost)	0		0		(158)
Adjustment for actual Medicare Part D reimbursement	(5)		(10)		(3)
Total recognized in other comprehensive income	15		373		614
Total recognized in net periodic benefit cost and other comprehensive income	$ (493)		$ (112)		$ 344

[1] Actuarial gains (losses) are amortized into costs of sales and operating expenses or selling, general and administrative expenses as appropriate. (See Note 10 – Retirement Plans)