Restructuring and Reorganization Charges - Schedule of Activity in Business Restructuring and Reorganization Reserves (Details) - USD ($) $ in Thousands	3 Months Ended							12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost And Reserve [Line Items]
Beginning Balance				$ 822				$ 822	$ 4,336	$ 4,148
Charged to expense during period	$ 1,000	$ 800	$ 2,500	1,000	$ 1,600	$ 1,300	$ 1,800	5,328	4,834	8,661
Cash payments								(4,546)	(5,538)	(9,369)
Adjustment for asset impairment								(672)	(438)	(1,851)
Other								1	562	2,747
Ending Balance	933				822			933	822	4,336
Adjustment for Adoption | ASC 842
Restructuring Cost And Reserve [Line Items]
Beginning Balance				(2,934)				(2,934)
Ending Balance					(2,934)				(2,934)
Termination Benefits
Restructuring Cost And Reserve [Line Items]
Beginning Balance				822				822	1,402	1,116
Charged to expense during period								4,152	2,499	6,555
Cash payments								(4,042)	(3,551)	(6,744)
Other								1	472	475
Ending Balance	$ 933				822			933	822	1,402
Facilities Abandonment
Restructuring Cost And Reserve [Line Items]
Beginning Balance									2,934	3,032
Charged to expense during period										1,981
Cash payments										(2,625)
Other										546
Ending Balance										2,934
Facilities Abandonment | ASC 842
Restructuring Cost And Reserve [Line Items]
Beginning Balance				2,900				2,900
Ending Balance					2,900				2,900
Facilities Abandonment | Adjustment for Adoption | ASC 842
Restructuring Cost And Reserve [Line Items]
Beginning Balance				$ (2,934)				(2,934)
Ending Balance					$ (2,934)				(2,934)
Disposition of Business Operations
Restructuring Cost And Reserve [Line Items]
Charged to expense during period										(2,330)
Other										2,330
Other
Restructuring Cost And Reserve [Line Items]
Charged to expense during period								1,176	2,335	2,455
Cash payments								(504)	(1,987)
Adjustment for asset impairment								$ (672)	(438)	(1,851)
Other									$ 90	$ (604)