Annual report pursuant to Section 13 and 15(d)

Benefit Plans - Recognized on the Balance Sheet (Details)

v3.10.0.1
Benefit Plans - Recognized on the Balance Sheet (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Defined Benefit Pension Plans | U.S.    
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position    
Noncurrent asset $ 0 $ 0
Current liability 0 0
Noncurrent liability (50,556) (42,728)
Accumulated other comprehensive income (loss) 1,218 10,499
Net amount recognized (49,338) (32,229)
Defined Benefit Pension Plans | Foreign    
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position    
Noncurrent asset 4,670 3,503
Current liability (748) (673)
Noncurrent liability (24,238) (26,022)
Accumulated other comprehensive income (loss) (1,829) (2,871)
Net amount recognized (22,145) (26,063)
Supplemental Retirement Plans    
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position    
Current liability (1,105) (1,115)
Noncurrent liability (10,763) (11,667)
Accumulated other comprehensive income (loss) 795 573
Net amount recognized (11,073) (12,209)
Other Postretirement Benefits Plans    
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position    
Current liability (581) (561)
Noncurrent liability (3,233) (4,051)
Accumulated other comprehensive income (loss) 830 885
Net amount recognized $ (2,984) $ (3,727)