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

Revenue - Additional Information (Detail)

v3.21.2
Revenue - Additional Information (Detail) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Revenue From Contract With Customer [Line Items]        
Sales $ 324 $ 39 $ 82 $ 0
Contract Assets 0   0 0
Contract Liabilities $ 0   $ 0 $ 0
Revenue, Performance Obligation, Description of Payment Terms Contracts do not contain a significant financing component as payment terms on invoiced amounts are typically between 10 to 20 days. Product returns were not significant for the nine months ended September 30, 2021 and 2020, respectively.   Contracts do not contain a significant financing component as payment terms on invoiced amounts are typically between 10 to 20 days. Product returns were not significant in 2020.