Leases - Additional Details of Leases Presented in Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Right of use assets	$ 1,300	$ 1,793
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Liabilities	Liabilities
Lease liabilities, current	$ 745	$ 663
Operating lease, liability, current, statement of financial position [Extensible list]	us-gaap:AccountsPayableAndOtherAccruedLiabilitiesCurrent	us-gaap:AccountsPayableAndOtherAccruedLiabilitiesCurrent
Lease liabilities, long-term	$ 1,028	$ 1,772
Operating lease, liability, noncurrent, statement of financial position [Extensible list]	Lease liability and other long-term liabilities	Lease liability and other long-term liabilities
Weighted-average remaining life	2 years 2 months 12 days	3 years 2 months 12 days
Weighted-average discount rate	8.00%	8.00%