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, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Rollforward of Restructuring and Reorganization Reserves
Beginning Balance				$ 4,148				$ 3,746	$ 4,148	$ 3,746	$ 2,994
Charged to expense during period	$ 1,600	$ 2,800	$ 3,300	900	$ 4,200	$ 1,600	$ 2,700	200	8,661	8,796	416
Cash payments									(9,369)	(5,674)	(7,254)
Adjustment for the gain on the disposition of business operations											6,611
Adjustment for asset impairment									(1,851)	(3,135)
Other									2,747	415	979
Ending Balance	4,336				4,148				4,336	4,148	3,746
Termination Benefits
Rollforward of Restructuring and Reorganization Reserves
Beginning Balance				1,116				2,414	1,116	2,414	1,637
Charged to expense during period									6,555	3,693	7,201
Cash payments									(6,744)	(4,345)	(6,781)
Other									475	(646)	357
Ending Balance	1,402				1,116				1,402	1,116	2,414
Facilities Abandonment
Rollforward of Restructuring and Reorganization Reserves
Beginning Balance				$ 3,032				$ 1,332	3,032	1,332	1,357
Charged to expense during period									1,981	2,236	556
Cash payments									(2,625)	(1,329)	(473)
Adjustment for asset impairment										(231)
Other									546	1,024	(108)
Ending Balance	$ 2,934				$ 3,032				2,934	3,032	1,332
Disposition of Business Operations
Rollforward of Restructuring and Reorganization Reserves
Charged to expense during period									(2,330)	2,904	(6,611)
Adjustment for the gain on the disposition of business operations											6,611
Adjustment for asset impairment										(2,904)
Other									2,330
Other
Rollforward of Restructuring and Reorganization Reserves
Charged to expense during period									2,455	(37)	(730)
Adjustment for asset impairment									(1,851)
Other									$ (604)	$ 37	$ 730