XML 18 R48.htm IDEA: XBRL DOCUMENT v2.4.0.8
Employee Benefit Plans (Details 3) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Pension Benefit Plan
      
Periodic costs for employee retirement benefit plans      
Service Cost $ 2,300 $ 2,198 $ 1,575
Interest Cost 2,468 2,417 2,261
Expected Return on Assets (2,894) (2,458) (2,283)
Amortization of Transition Obligation         
Amortization of Net Actuarial Loss 1,632 1,549 565
Amortization of Prior Service Cost 10 10 10
Net Periodic Benefit Cost 3,516 3,716 2,128
Other Benefits Plan
      
Periodic costs for employee retirement benefit plans      
Service Cost 1,338 1,784 1,306
Interest Cost 1,594 1,868 1,604
Expected Return on Assets (1,622) (1,258) (1,026)
Amortization of Transition Obligation    135 135
Amortization of Net Actuarial Loss 2,066 1,765 878
Amortization of Prior Service Cost (1,728)      
Net Periodic Benefit Cost $ 1,648 $ 4,294 $ 2,897