Leases - Schedule of Weighted Average Remaining Lease Terms and Discount Rate of Operating Leases (Detail)	Dec. 31, 2021	Dec. 31, 2020
Office and Warehouse Space [Member]
Lessee Lease Description [Line Items]
Weighted average remaining lease term	3 years 6 months 3 days	8 months 26 days
Office Leases [Member]
Lessee Lease Description [Line Items]
Weighted average discount rate	2.95%	3.41%
Vehicles [Member]
Lessee Lease Description [Line Items]
Weighted average remaining lease term	4 months 13 days	4 months 2 days
Weighted average discount rate	0.59%	0.96%
Office Equipment [Member]
Lessee Lease Description [Line Items]
Weighted average remaining lease term	0 years	14 days
Weighted average discount rate	0.02%	0.17%