Quarterly report pursuant to Section 13 or 15(d)

Leases, Commitments and Contingencies - Additional Information (Detail)

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Leases, Commitments and Contingencies - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Aug. 11, 2022
Jun. 10, 2022
Mar. 01, 2022
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Other Commitments [Line Items]                
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]       Other Assets, Noncurrent   Other Assets, Noncurrent   Other Assets, Noncurrent
Current portion of operating lease liabilities       $ 2,494   $ 2,494   $ 2,112
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]       Other Accrued Liabilities, Current   Other Accrued Liabilities, Current   Other Accrued Liabilities, Current
Non-current portion of operating lease liabilities       $ 770   $ 770   $ 1,510
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]       Other Liabilities, Noncurrent   Other Liabilities, Noncurrent   Other Liabilities, Noncurrent
Operating lease, cash payments       $ 820 $ 688 $ 2,070 $ 2,009  
Operating lease, weighted average remaining lease term       1 year 6 months   1 year 6 months    
Operating lease, weighted average discount rate       6.80%   6.80%    
Sublease income       $ 277 277 $ 831 831  
March 2022 Acquisition [Member]                
Other Commitments [Line Items]                
Purchase consideration payment within ten days of first anniversary of acquisition       1,500   1,500    
Purchase consideration payment within ten days of second anniversary of acquisition       1,500   1,500    
Cash payment     $ 1,500     1,500    
VocaliD [Member]                
Other Commitments [Line Items]                
Cash payment   $ 1,609       1,000    
Purchase consideration payments on first anniversary of acquisition       1,000   1,000    
Purchase consideration payments on 18-month anniversary of acquisition       1,000   1,000    
VSL Acquisition [Member]                
Other Commitments [Line Items]                
Cash payment $ 1,700              
Purchase consideration payments on 18-month anniversary of acquisition       300   300    
Office Sublease [Member]                
Other Commitments [Line Items]                
Rent expense       612 $ 620 1,704 $ 1,882  
Minimum [Member]                
Other Commitments [Line Items]                
Operating lease right-of-use assets       2,039   2,039   $ 1,755
Current portion of operating lease liabilities       $ 2,493   $ 2,493   $ 2,112