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Stock-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2018
Fair value of option vested			$ 2,029	$ 586
Options granted			1,418,224	1,037,099
Weighted average grant-date fair value			$ 3.94	$ 5.31
Restricted Stock Units [Member]
Unrecognized stock compensation expense	$ 7,479		$ 7,479
Share-based compensation expected to be recognized over a weighted-average period			2 years 11 months 1 day
Restricted stock units issued to employees			979,257	290,027
Option
Unrecognized stock compensation expense	7,106		$ 7,106
Share-based compensation expected to be recognized over a weighted-average period			3 years 21 days
Selling, General and Administrative Expenses
Share-based compensation expense	$ 1,692	$ 1,042	$ 2,995	$ 1,740
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 days
2003 and 2018 Stock Incentive Plan \| Option
Stock option expiration period			10 years
Common Class A \| 2018 Stock Incentive Plan
Common stock awards authorized	7,826,970		7,826,970		9,198,996