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Restructuring - Schedule of Components of Restructuring Expenses Included in Consolidated Statements of Loss (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Restructuring Cost And Reserve [Line Items]      
Total restructuring expenses $ 46,554 $ 1,629 $ 411
Selling, General and Administrative Expenses [Member]      
Restructuring Cost And Reserve [Line Items]      
Total restructuring expenses 11,603 117 221
Research and Development Expenses [Member]      
Restructuring Cost And Reserve [Line Items]      
Total restructuring expenses 7,728 1,504 174
Cost of Sales [Member]      
Restructuring Cost And Reserve [Line Items]      
Total restructuring expenses 27,223 8 16
Cost of Sales [Member] | Network Solutions [Member]      
Restructuring Cost And Reserve [Line Items]      
Total restructuring expenses 2,910 $ 8 13
Cost of Sales [Member] | Services & Support [Member]      
Restructuring Cost And Reserve [Line Items]      
Total restructuring expenses     $ 3
Inventory Write Down [Member] | Network Solutions [Member]      
Restructuring Cost And Reserve [Line Items]      
Total restructuring expenses $ 24,313