Acquisitions - Narrative (Details) € in Thousands, £ in Thousands, $ in Thousands		1 Months Ended			3 Months Ended		9 Months Ended	12 Months Ended
	Apr. 03, 2017 USD ($)	Oct. 31, 2018 EUR (€)	Oct. 31, 2018 USD ($)	Jul. 31, 2018 USD ($)	Sep. 30, 2018 GBP (£)	Sep. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Oct. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jul. 23, 2018 USD ($)
Business Acquisition [Line Items]
Period of acquisitions								3 years
Goodwill							$ 690,223	$ 933,022	$ 955,524
Acquisition related costs								5,420
Acquisition-related goodwill								5,841	285,355
Gimatic and IGS [Member]
Business Acquisition [Line Items]
Acquisition-related costs adjustment									5,420
Inventory adjustment									$ 10,905
IGS [Member]
Business Acquisition [Line Items]
Aggregate purchase price					£ 29,138	$ 38,016
Adjustments under terms of Share Purchase Agreement					£ 2,820						$ 3,679
Goodwill												$ 14,098
Sales since date of acquisition								6,360
Loss since date of acquisition								1,726
Acquisition-related goodwill						14,098
Intangible assets acquired				$ 15,300		$ 15,300
Short-term purchase accounting adjustments								2,887
Other intangible assets, net												$ 15,300
Gimatic [Member]
Business Acquisition [Line Items]
Aggregate purchase price		€ 363,352	$ 411,024
Adjustments under terms of Share Purchase Agreement		€ 7,790								$ 8,812
Goodwill										277,098
Sales since date of acquisition								8,793
Loss since date of acquisition								2,109
Acquisition-related goodwill			277,098
Intangible assets acquired			$ 158,800
Short-term purchase accounting adjustments								2,707
Other intangible assets, net										$ 158,800
Gammaflux L.P. [Member]
Business Acquisition [Line Items]
Aggregate purchase price	$ 8,866
Adjustments under terms of Share Purchase Agreement	2
Goodwill	1,535
Acquisition related costs								$ 210
Sales since date of acquisition							$ 9,081
Other intangible assets, net	$ 3,700