Goodwill and Other Intangibles - Other Intangibles (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	$ 536,851
Foreign currency translation adjustments and other	12,634
Gross Asset Value, End of Period	549,485
Accumulated Amortization, Beginning of Period	(182,229)
Amortization	(18,563)
Foreign currency translation adjustments and other	(4,774)
Accumulated Amortization, End of Period	(205,566)
Net Book Value	343,919	$ 354,622
Customer lists and relationships
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	422,462
Foreign currency translation adjustments and other	12,699
Gross Asset Value, End of Period	435,161
Accumulated Amortization, Beginning of Period	(116,749)
Amortization	(16,789)
Foreign currency translation adjustments and other	(3,729)
Accumulated Amortization, End of Period	(137,267)
Net Book Value	297,894	305,713
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	18,087
Foreign currency translation adjustments and other	104
Gross Asset Value, End of Period	18,191
Accumulated Amortization, Beginning of Period	(7,938)
Amortization	0
Foreign currency translation adjustments and other	(113)
Accumulated Amortization, End of Period	(8,051)
Net Book Value	10,140	10,149
Patents and technology
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	55,020
Foreign currency translation adjustments and other	1,355
Gross Asset Value, End of Period	56,375
Accumulated Amortization, Beginning of Period	(36,197)
Amortization	(1,022)
Foreign currency translation adjustments and other	(929)
Accumulated Amortization, End of Period	(38,148)
Net Book Value	18,227	18,823
Other
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning of Period	41,282
Foreign currency translation adjustments and other	(1,524)
Gross Asset Value, End of Period	39,758
Accumulated Amortization, Beginning of Period	(21,345)
Amortization	(752)
Foreign currency translation adjustments and other	(3)
Accumulated Amortization, End of Period	(22,100)
Net Book Value	$ 17,658	$ 19,937