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Business Combinations - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended
Mar. 03, 2021
Feb. 05, 2021
Apr. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Business Acquisition [Line Items]              
Goodwill   $ 1,478   $ 5,675 $ 3,977 $ 3,977 $ 3,977
Tangible assets, net   718          
Developed technologies   3,630          
Optelian Access Networks Corporation              
Business Acquisition [Line Items]              
Purchase price   7,490          
Goodwill   $ 1,500          
RIFT Inc              
Business Acquisition [Line Items]              
Purchase price $ 500            
Goodwill 200            
Tangible assets, net 100            
RIFT Inc | Developed Technology              
Business Acquisition [Line Items]              
Developed technologies $ 200            
RIFT Inc | Subsequent Event              
Business Acquisition [Line Items]              
Held back amount released     $ 200