Product Warranty (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Activity for accrued warranty expense
Balance at beginning of period	$ 3,831	$ 4,048
Provision	1,029	1,209
Claims paid/costs incurred	(918)	(944)
Foreign currency translation and other	(43)	(164)
Balance at end of period	$ 3,899	$ 4,149
Minimum
Product Warranty Liability [Line Items]
Product warranty period	1 year
Maximum
Product Warranty Liability [Line Items]
Product warranty period	2 years