Retirement Plans And Other Postretirement Benefits (Reconciliation Of Changes In Benefit Obligations And Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amounts recognized in the consolidated balance sheets:
Total plan assets	$ 229,017	$ 232,705
Pension Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	275,166	302,285
Service cost	869	3,754	3,657
Interest cost	13,397	12,338	13,084
Effect of actuarial (gains) losses related to the following:
Discount rate change	32,089	(26,848)
Retirement rate assumptions and mortality table adjustments	17,331	(144)
Effect Of Actuarial (Gains) Losses, Retiree Medical Participation Rate Change	0	0
Other	490	(3,058)
Benefits paid	(13,916)	(13,161)
Benefit obligation, end of year	325,426	275,166	302,285
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at fair value, beginning of year	232,705	219,035
Actual return on plan assets	7,466	21,657
Employer contributions	2,762	5,174
Benefits paid	(13,916)	(13,161)
Plan assets at fair value, end of year	229,017	232,705	219,035
Funded status of the plans	(96,409)	(42,461)
Amounts recognized in the consolidated balance sheets:
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent		42,461
Net amount recognized	96,409	42,461
Other Post-Retirement Benefits
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	7,858	8,879
Service cost	43	58	58
Interest cost	387	345	385
Effect of actuarial (gains) losses related to the following:
Discount rate change	732	(746)
Retirement rate assumptions and mortality table adjustments	(131)	0
Effect Of Actuarial (Gains) Losses, Retiree Medical Participation Rate Change	(390)	0
Other	218	(382)
Benefits paid	(1,026)	(979)
Benefit obligation, end of year	8,372	7,858	8,879
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Plan assets at fair value, beginning of year	0	0
Actual return on plan assets	0	0
Employer contributions	345	296
Benefits paid	(1,026)	(979)
Plan assets at fair value, end of year	0	0	0
Funded status of the plans	(8,372)	(7,858)
Amounts recognized in the consolidated balance sheets:
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	7,916	7,858
Net amount recognized	8,372	7,858
Defined Benefit Plan, Contributions by Plan Participants	681	683
Accrued Expenses \| Pension Benefits
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	130
Accrued Expenses \| Other Post-Retirement Benefits
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Pension and Other Postretirement Defined Benefit Plans, Current Liabilities	456
Other Noncurrent Liabilities [Member] \| Pension Benefits
Amounts recognized in the consolidated balance sheets:
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	$ 96,279

Effect of actuarial (gains) losses, discount rate change.

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The difference between fair value of plan assets at the end of the period and the fair value at the beginning of the period, adjusted for contributions and payments of benefits during the period, and after adjusting for taxes and other expenses, as applicable.

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The aggregate net amount recognized in the balance sheet associated with the defined benefit plan(s). Will normally be the same as the Defined Benefit Plan, Funded Status of Plan, Total.

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This represents the entire assets recognized in the balance sheet that are associated with the defined benefit plans.

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1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

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The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets.

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The increase in the fair value of plan assets from contributions made by the employer.

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The amount of contributions made by plan participants. This item represents a periodic increase to the plan obligation and an increase to plan assets.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

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The increase in a defined benefit pension plan's projected benefit obligation or a defined benefit postretirement plan's accumulated postretirement benefit obligation due to the passage of time.

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The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost component is a portion of the benefit obligation and is unaffected by the funded status of the plan.

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For a classified balance sheet, the amount recognized in balance sheet as a current liability associated with an underfunded defined benefit plan.

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This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

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