Acquisitions and Divestitures - Divestitures (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Mar. 12, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income tax expense		$ (27,697)	$ (20,831)	$ (60,644)	$ (46,332)
Disposed of by Sale | CiDRA Precision Services
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of businesses, net of cash sold	$ 1,000
Gain on sale	500
Income tax expense	(100)
Revenue	$ 900