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Stockholders' Equity and Stock-Based Compensation - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 24, 2019
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2018
Options granted       2,640,601 3,554,528    
Restricted Stock Units [Member]              
Unrecognized stock compensation expense   $ 10,130   $ 10,130      
Share-based compensation expected to be recognized over a weighted-average period       2 years 7 months 17 days      
RSU granted during the period       1,914,335 3,192,372    
Option              
Fair value of option vested       $ 4,089 $ 3,070    
Unrecognized stock compensation expense   8,345   $ 8,345      
Share-based compensation expected to be recognized over a weighted-average period       2 years 7 months 28 days      
Weighted average grant-date fair value       $ 1.89 $ 1.32    
Selling, General and Administrative Expenses              
Stock-based compensation expense   $ 2,568 $ 2,299 $ 4,975 $ 4,213    
2003 and 2018 Stock Incentive Plan | Maximum              
Stock option granted vesting period       5 years      
2003 and 2018 Stock Incentive Plan | Minimum              
Stock option granted vesting period       4 years      
2003 and 2018 Stock Incentive Plan | Option              
Stock option expiration period       10 years      
Common Class A              
Company issued acquisition of shares 728,548            
Common Class A | 2018 Stock Incentive Plan              
Common stock awards authorized   15,900,000   15,900,000   7,826,970 9,198,996