Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Net Periodic Pension Expense Benefit (Details)

v3.19.3
Benefit Plans - Net Periodic Pension Expense Benefit (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Defined Benefit Pension Plans | U.S.        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)        
Service cost $ 251 $ 243 $ 751 $ 776
Interest cost 2,653 2,395 7,958 7,137
Expected return on plan assets (2,912) (3,165) (8,733) (9,515)
Amortization of net (gain) loss 0 0 0 0
Amortization of prior service cost (credit) 0 0 0 0
Curtailment gain recognized     0 (576)
Net periodic expense (benefit) (8) (527) (24) (2,178)
Defined Benefit Pension Plans | Foreign        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)        
Service cost 780 933 2,464 2,665
Interest cost 801 (601) 2,458 2,512
Expected return on plan assets (782) 453 (2,375) (2,494)
Amortization of net (gain) loss 1 13 1 38
Amortization of prior service cost (credit) 6 0 18 0
Curtailment gain recognized     0 0
Net periodic expense (benefit) 806 798 2,566 2,721
Supplemental Retirement Plans        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)        
Interest cost 121 110 364 330
Net periodic expense (benefit) 121 110 364 330
Other Postretirement Benefits Plans        
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)        
Service cost 3 3 10 12
Interest cost 38 43 114 108
Amortization of net (gain) loss (9) (11) (27) (33)
Amortization of prior service cost (credit) (32) (40) (97) (79)
Net periodic expense (benefit) $ 0 $ (5) $ 0 $ 8