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

Stock-Based Compensation - Summary of Stock Option Activity (Details)

v3.21.2
Stock-Based Compensation - Summary of Stock Option Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Opening balance, options   3,489 3,856
Granted, options     2,226
Exercised, options (969,000)   (188)
Forfeited, options (176,000)   (2,405)
Ending balance, Options 3,489 2,344 3,489
Exercisable - December 31, 2020, options 1,712 1,241 1,712
Opening Balance, Weighted Average Exercise Price   $ 0.2160 $ 1.9693
Granted, Weighted Average Exercise Price     0.0121
Exercised, Weighted Average Exercise Price $ 0.1030   0.1097
Forfeited, Weighted Average Exercise Price 0.1507   0.0724
Ending Balance, Weighted Average Exercise Price 0.2160 0.2500 0.2160
Exercisable - December 31, 2020, Weighted Average Exercise Price $ 0.3827 $ 0.4367 $ 0.3827
Outstanding - December 31, 2020, Weighted Average Remaining Contractual Term (Years)   7 years 8 months 12 days 8 years 2 months 12 days
Exercisable - December 31, 2020, Weighted Average Remaining Contractual Term (Years)   7 years 2 months 12 days 7 years 7 months 6 days
Outstanding - December 31, 2020, Aggregate Intrinsic Value $ 1,309 $ 23,670 $ 1,309
Exercisable - December 31, 2020, Aggregate Intrinsic Value $ 581 $ 12,302 $ 581