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Restructuring Charges - Schedule Of Restructuring activity (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Beginning Balance $ 2,615 $ 6,104 $ 13,257
Charges 5,356 5,385 12,465
Payments/utilization (6,672) (8,874) (18,703)
Foreign exchange translation effects     (915)
Ending Balance 1,299 2,615 6,104
Employee Severance [Member]      
Beginning Balance 1,323 3,450 13,257
Charges 4,601 2,271 7,901
Payments/utilization (5,380) (4,398) (16,841)
Foreign exchange translation effects     (867)
Ending Balance 544 1,323 3,450
Facility Costs And Other [Member]      
Beginning Balance 1,292 2,654  
Charges 755 3,114 4,564
Payments/utilization (1,292) (4,476) (1,862)
Foreign exchange translation effects     (48)
Ending Balance $ 755 $ 1,292 $ 2,654