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Employee Benefit Plans (Details 3) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Net (gain) loss arising during period $ 8,765 $ 13,975 $ (7,798)
Pension Plan
      
Accumulated other comprehensive gain (loss) at beginning of fiscal year (2,063) (9,855)  
Net (gain) loss arising during period 6,910 12,288  
Prior service cost    32  
Transition Obligation    30  
Amortization of unrecognized actuarial loss 49 545  
Amortization of prior service cost and transition obligation    14  
Tax expense (benefit) of changes during the year, net (2,713) (5,117)  
Accumulated other comprehensive gain (loss) at end of fiscal year $ 2,183 $ (2,063)