Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Operating Leases - Additional Information (Detail)

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Commitments and Contingencies - Operating Leases - Additional Information (Detail) - USD ($)
 1 Months Ended
Oct. 31, 2019
Jun. 30, 2021
Dec. 31, 2020
Jul. 15, 2019
Jul. 01, 2019
Jan. 01, 2019
Commitments And Contingencies [Line Items]            
Operating lease right-of-use assets   $ 899,355 $ 1,293,291      
Operating lease liabilities   785,484 825,431      
Total operating lease payments   1,002,084        
Long-term portion of operating lease liabilities   194,176 $ 576,762      
ASU No. 2016-02 [Member]            
Commitments And Contingencies [Line Items]            
Operating lease right-of-use assets   899,355       $ 414,426
Operating lease liabilities   785,484       $ 485,747
Total operating lease payments   1,002,084        
Long-term portion of operating lease liabilities   $ 194,176        
Weighted average remaining lease term   1 year 2 months 12 days        
San Jose, California [Member]            
Commitments And Contingencies [Line Items]            
Operating lease, renewal term         3 years  
Operating lease payment $ 52,970          
San Jose, California [Member] | Maximum [Member]            
Commitments And Contingencies [Line Items]            
Maximum monthly lease payment 64,941          
Costa Mesa, California [Member]            
Commitments And Contingencies [Line Items]            
Operating lease, renewal term       2 years    
Operating lease payment 9,773          
Costa Mesa, California [Member] | Maximum [Member]            
Commitments And Contingencies [Line Items]            
Maximum monthly lease payment $ 10,200