Product Warranty (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Activity for accrued warranty expense
Balance at beginning of period	$ 4,149	$ 3,548	$ 4,048	$ 3,331
Provision	121	2,014	1,330	3,088
Claims paid/costs incurred	(786)	(1,949)	(1,730)	(2,825)
Foreign currency translation and other	110	(33)	(54)	(14)
Balance at end of period	$ 3,594	$ 3,580	$ 3,594	$ 3,580
Minimum
Product Warranty Liability [Line Items]
Product warranty period			1 year
Maximum
Product Warranty Liability [Line Items]
Product warranty period			2 years