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Acquisitions - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended
	Nov. 19, 2020	Mar. 31, 2021	Mar. 31, 2020
Business Acquisition [Line Items]
Amortization of intangible assets		$ 24,500	$ 22,700
Revenues		874,697	$ 970,993
Braxton Science Technology Group
Business Acquisition [Line Items]
Percentage of ownership interest acquired	100.00%
Cash paid to acquire	$ 308,800
Amortization of intangible assets		4,100
Goodwill deductible for tax purposes	$ 196,300
Revenues		31,000
Selling, General and Administrative Expense | Braxton Science Technology Group
Business Acquisition [Line Items]
Acquisition related expenses		$ 600

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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