Retirement Plans (Accumulated Benefit Obligation In Excess Of Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at end of year	$ 0	$ 216,926
Accumulated benefit obligation at end of year	0	179,190
Fair value of plan assets at end of year	0	174,223
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at end of year	1,746	1,645
Accumulated benefit obligation at end of year	1,746	1,645
Fair value of plan assets at end of year	$ 0	$ 0

If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

+ References+ Details