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

Equity Based Awards - Additional Information (Detail)

v3.21.2
Equity Based Awards - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Common stock reserved for future issuance 134,825,581       134,825,581   137,363,174 129,279,630
Stock issued during period, value, Stock options exercised $ 62 $ 356   $ 600     $ 1,131 $ 390
Stock based compensation expense 1,777   $ 503   $ 2,971 $ 1,007 $ 2,569 $ 858
2013 Stock Plan [Member]                
Common stock reserved for future issuance             36,313,607  
Share-based payment award, Award vesting rights percentage             25.00%  
Share-based payment award, Award expiration period             10 years  
Share-based payment award, Aggregate intrinsic value of option outstanding $ 114,700       $ 114,700   $ 13,600  
Share-based payment award, Vested and expected to vest shares outstanding 17,877,383       17,877,383   18,695,077  
Stock issued during period, Option exercised         857,343   2,231,540 240,875
Share-based payment award, options grants to purchase shares         0 850,300    
Share-based payment award, Fair value of option granted             $ 12,700 $ 6,600
Stock based compensation expense             2,600 900
Share-based payment award, Compensation cost not yet recognized $ 21,900       $ 21,900   $ 15,400  
Share-based payment award, Compensation cost not yet recognized, Period of recognition         1 year 4 months 24 days   1 year 7 months 6 days  
Share-based payment award, Fair value of option granted           $ 900    
2013 Stock Plan [Member] | Maximum [Member]                
Share-based payment award, Award vesting period             36 months  
2013 Stock Plan [Member] | Minimum [Member]                
Share-based payment award, Award vesting period             12 months  
2013 Stock Plan [Member] | Employees Directors And Consultants [Member]                
Common stock reserved for future issuance 36,313,607       36,313,607      
2013 Stock Plan [Member] | Notes Receivable [Member]                
Stock issued during period, value, Stock options exercised               $ 200
Common Stock [Member] | 2013 Stock Plan [Member]                
Share-based payment award, options grants to purchase shares             9,890,563 7,194,585