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Other Expense, net (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Other Income and Expenses [Abstract]      
Currency transactions $ (4,471) $ (67) $ 4,634
Bank fees and amortization of debt issuance costs 348 417 487
Pension settlements and curtailments 450 1,494  
Components of net periodic pension and postretirement cost other than service 1,105 1,089 2,525
Gain on insurance recovery (2,000)
Other 1,013 1,104 1,231
Total (1,557) 4,037 $ 6,877
Curtailment gain $ 500 700  
Settlement charge   $ 2,200