Employee Benefit Plan - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Contribution Plan Disclosure [Line Items]
Defined contribution retirement plan, description	All employees over the age of 21 are eligible to participate in the plan at the beginning of the calendar quarter after three consecutive months of service
Employer contributions to the plan	$ 349	$ 279	$ 198
Defined contribution retirement plan, employer contribution percentage	3.00%
Minimum [Member]
Defined Contribution Plan Disclosure [Line Items]
Defined contribution retirement plan, employee eligible age to participate	21 years
Defined contribution retirement plan, employee eligible service period	3 months