General form of registration statement for all companies including face-amount certificate companies

Revenue Recognition - Summary of Disaggregation Revenue (Detail)

v3.21.2
Revenue Recognition - Summary of Disaggregation Revenue (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Disaggregation of Revenue [Line Items]            
Total $ 67,878 $ 55,257 $ 183,919 $ 156,297 $ 213,760 $ 169,152
Revenue From Contract With Customer Excluding Assessed Tax         213,760 169,152
Connectivity            
Disaggregation of Revenue [Line Items]            
Total 40,738 37,932 122,444 111,583    
Revenue From Contract With Customer Excluding Assessed Tax         152,996 147,927
Hardware Sales            
Disaggregation of Revenue [Line Items]            
Total 19,221 9,345 40,602 23,276    
Revenue From Contract With Customer Excluding Assessed Tax         29,601 8,767
Hardware Sales - bill-and-hold            
Disaggregation of Revenue [Line Items]            
Total 229 2,476 3,451 5,908    
Revenue From Contract With Customer Excluding Assessed Tax         11,314 960
Deployment services, professional services and other            
Disaggregation of Revenue [Line Items]            
Total $ 7,690 $ 5,504 $ 17,422 $ 15,530    
Revenue From Contract With Customer Excluding Assessed Tax         $ 19,849 $ 11,498