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Other Long-Term Obligations and Commitments - Additional Information (Detail) - USD ($)
 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Weighted-average discount rate 7.82%  
Operating lease weighted-average remaining lease term 7 months 26 days 6 months 10 days
Operating lease payments $ 552,000 $ 499,000
Operating lease cost $ 525,000 468,000
Lease period description The Company leases office facilities under operating leases and recognizes lease expense on a straight-line basis over the lease term. Lease assets and liabilities are initially recorded at commencement date based on the present value of lease payments over the lease term.  
Rent Expenses $ 555,000 $ 563,000
Lease Payments Due Next year 187,000  
Lease payments due next two years 275,000  
Lease payments due next third years $ 45,000