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Segment Information - Revenue Information by Category (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Disaggregation Of Revenue [Line Items]    
Revenue $ 323,912 $ 154,518
Subscriber Solutions [Member]    
Disaggregation Of Revenue [Line Items]    
Revenue 79,336 56,722
Access & Aggregation Solutions [Member]    
Disaggregation Of Revenue [Line Items]    
Revenue 96,820 $ 97,796
Optical Networking Solutions    
Disaggregation Of Revenue [Line Items]    
Revenue $ 147,756