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Other Long-Term Obligations and Commitments - Additional Information (Detail) - USD ($)
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Lease period description The Company leases office facilities under operating leases and recognizes lease expense on a straight-line basis over the lease term. Leases assets and liabilities are initially recorded at commencement date based on the present value of lease payments over the lease term.  
Rent expense for office space $ 177,000 $ 163,000
Lease Payments With in One Year 451,000  
Lease Payments Due Next year $ 150,000  
Weighted-average discount rate 5.50%  
Operating lease weighted-average remaining lease term 12 months  
Operating Lease Payments $ 150,000  
Operating Lease, Cost $ 142,000