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Employee Benefit Plans (Details 4) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Employee Benefit Plans [Abstract]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation	$ 112,759,000	$ 93,101,000
Defined Benefit Plan Pension Plans With Projected Benefit Obligations In Excess Of Plan Assets Fair Value Of Plan Assets	$ 49,516,000	$ 41,300,000

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.

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