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Retirement Plans (Details 7) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
U.S. Pension Plans    
Accumulated Other Comprehensive Income [Abstract]    
Net actuarial (loss) gain on defined benefit plan recognized in accumulated other comprehensive (loss) income $ (48,835) $ (45,749)
Total recognized in accumulated other comprehensive (loss) income (48,835) (45,749)
Amounts that will be Amortized from Accumulated Other Comprehensive Income in Next Fiscal Year [Abstract]    
Net actuarial loss on defined benefit plan to be amortized from accumulated other comprehensive (loss) income in the next fiscal year (2,669)  
Defined benefit plan amounts that will be amortized from accumulated other comprehensive (loss) income in the next fiscal year (2,669)  
U.S. Retiree Healthcare Plan    
Accumulated Other Comprehensive Income [Abstract]    
Net actuarial (loss) gain on defined benefit plan recognized in accumulated other comprehensive (loss) income 1,170 44
Total recognized in accumulated other comprehensive (loss) income 1,170 44
Non-U.S. Pension Plans    
Accumulated Other Comprehensive Income [Abstract]    
Net actuarial (loss) gain on defined benefit plan recognized in accumulated other comprehensive (loss) income (17,478) (23,327)
Prior service credit from defined benefit plan recognized in accumulated other comprehensive (loss) income 1,465 719
Total recognized in accumulated other comprehensive (loss) income (16,013) $ (22,608)
Amounts that will be Amortized from Accumulated Other Comprehensive Income in Next Fiscal Year [Abstract]    
Net actuarial loss on defined benefit plan to be amortized from accumulated other comprehensive (loss) income in the next fiscal year (748)  
Prior service credit from defined benefit plan to be amortized from accumulated other comprehensive (loss) income in the next fiscal year 174  
Defined benefit plan amounts that will be amortized from accumulated other comprehensive (loss) income in the next fiscal year $ (574)