Restructuring and Other Related Charges (Summary of Accrued Restructuring Costs) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 25,602
Charges	9,534
Cash payments	(29,624)
Non-cash adjustments	(4,329)
Other	62
Ending Balance	1,245
Severance and employee-related costs
Restructuring Reserve [Roll Forward]
Beginning Balance	25,571
Charges	5,077
Cash payments	(29,496)
Non-cash adjustments	0
Other	64
Ending Balance	1,216
Other exit costs
Restructuring Reserve [Roll Forward]
Beginning Balance	31
Charges	4,457
Cash payments	(128)
Non-cash adjustments	(4,329)
Other	(2)
Ending Balance	$ 29