Other Expense, net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Other Income and Expenses [Abstract]
Currency transactions	$ (67)	$ 4,634	$ (3,532)
Bank fees and amortization of debt issuance costs	417	487	759
Pension settlements and curtailments	1,494		51
Components of net periodic pension and postretirement cost other than service	1,089	2,525	2,305
Gain on insurance recovery		(2,000)
Loss due to theft			2,506
Other	1,104	1,231	313
Total	4,037	$ 6,877	$ 2,402
Curtailment gain	700
Settlement charge	$ 2,200