Quarterly report pursuant to Section 13 or 15(d)

Balance Sheet Components - Summary of Property Plant and Equipment, Net (Detail)

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Balance Sheet Components - Summary of Property Plant and Equipment, Net (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 42,703 $ 35,700
Less: Accumulated depreciation and amortization (28,113) (23,260)
Property, Plant and Equipment, Other, Net 14,590 12,440
Property, Plant and Equipment, Net 25,855 20,458
Satellites in-service    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 32,076 26,196
Internally developed software    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 2,166 2,166
Ground stations in-service    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 2,084 1,872
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 1,589 1,589
Machinery and equipment    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 2,373 1,873
Computer equipment    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 1,485 1,153
Computer software and website development    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 472 472
Furniture and fixtures    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 458 379
Satellite, launch and ground station work in progress    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Other, Net $ 11,265 4,934
Finished satellites not in-service    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Other, Net   $ 3,084