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Executive Benefit Agreements and Employee Savings Plans (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Life Insurance Policies    
Total face value of life insurance policies $ 21,522 $ 21,522
Cash surrender values of life insurance policies 4,961 4,461
Loans on cash surrender values (1,890) (1,844)
Net cash surrender values $ 3,071 $ 2,617