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Pension and Other Post Retirement Benefit Plans - Schedule of Accumulated Benefit Obligation in Excess of Plan Assets (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Compensation and Retirement Disclosure [Abstract]    
Projected Benefit Obligation $ 4,782 $ 69,166
Accumulated Benefit Obligation 4,782 69,139
Fair Value of Plan Assets    $ 62,865