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Employee Benefit Plans (Details 11) (SERP, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
SERP
   
Other assets - prepaid pension asset $ (6,614) $ (6,075)
Other liabilities (199) (1,989)
[DefinedBenefitPlanAmountsRecognizedInBalanceSheet] $ (6,813) $ (8,064)