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Restructuring and Related Activities - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 26,991	$ 1,230	$ (51)
Severance charges	15,645	$ 1,097	$ (273)
One-time Termination Benefits
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	13,700
Lease Termination and Asset Impairment Charges
Restructuring Cost and Reserve [Line Items]
Restructuring Costs	$ 10,500

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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