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Business Acquisitions - Additional Information (Details)
$ in Thousands, £ in Millions
3 Months Ended 9 Months Ended
Dec. 03, 2020
USD ($)
Dec. 03, 2020
GBP (£)
Oct. 29, 2020
USD ($)
Jun. 30, 2021
USD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Business Acquisition [Line Items]            
Goodwill         $ 18,979 $ 18,121
Goodwill adjustment         $ 900  
OptaSense Holdings Limited            
Business Acquisition [Line Items]            
Aggregate consideration $ 38,900 £ 29.0        
Goodwill     $ 8,520      
Goodwill adjustment       $ 900    
New Ride Technologies            
Business Acquisition [Line Items]            
Aggregate consideration     600      
Cash consideration     400      
Contingent obligation     200      
Goodwill     20      
Potential maximum obligation of contingent consideration     $ 200      
Developed technology            
Business Acquisition [Line Items]            
Discount rate used to estimate fair value of acquired finite-lived intangible assets     17.50%      
Trade names and trademarks            
Business Acquisition [Line Items]            
Discount rate used to estimate fair value of acquired finite-lived intangible assets     17.50%      
Backlog            
Business Acquisition [Line Items]            
Discount rate used to estimate fair value of acquired finite-lived intangible assets     16.50%      
Customer relationships            
Business Acquisition [Line Items]            
Discount rate used to estimate fair value of acquired finite-lived intangible assets     17.50%