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Employee Benefit Plans - Schedule of Changes in Fair Value of Plan Assets (Details) - Pension Plan, Defined Benefit
$ in Thousands
9 Months Ended
Sep. 30, 2015
USD ($)
Change in Benefit Obligation [Roll Forward]  
Benefit obligation - beginning $ 159,715
Service cost 230
Interest cost 4,290
Actuarial gain (7,832)
Benefits paid (3,274)
Currency changes (4,498)
Benefit obligation - ending 148,631
Change in Plan Assets [Roll Forward]  
Fair value of plan assets - beginning 122,780
Actual return 72
Employer contribution 307
Benefits paid (3,274)
Currency changes (3,482)
Fair value of plan assets - ending 116,403
Underfunded status $ 32,228