Restructuring and Other Related Charges (Summary of Accrued Restructuring Costs) (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 25,602
Charges	8,780
Cash payments	(26,398)
Non-cash adjustments	(4,457)
Other	64
Ending Balance	3,591
Severance and employee-related costs
Restructuring Reserve [Roll Forward]
Beginning Balance	25,571
Charges	4,323
Cash payments	(26,398)
Non-cash adjustments	0
Other	64
Ending Balance	3,560
Other exit costs
Restructuring Reserve [Roll Forward]
Beginning Balance	31
Charges	4,457
Cash payments	0
Non-cash adjustments	(4,457)
Other	0
Ending Balance	$ 31