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Benefit Plans (Accumulated Benefit Obligation In Excess Of Plan) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Benefit Plans [Abstract]
Projected benefit obligation	$ 12,731	$ 9,851
Accumulated benefit obligation	$ 12,337	$ 9,583

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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- 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