Annual report pursuant to Section 13 and 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
Dec. 31, 2020
Dec. 31, 2019
Jul. 15, 2019
Jul. 01, 2019
Jan. 01, 2019
Commitments And Contingencies [Line Items]            
Operating lease right-of-use assets   $ 1,293,291 $ 2,057,576      
Operating lease liabilities   825,431 722,291      
Total operating lease payments   1,447,668        
Long-term portion of operating lease liabilities   576,762 $ 1,402,193      
ASU No. 2016-02 [Member]            
Commitments And Contingencies [Line Items]            
Operating lease right-of-use assets   1,293,291       $ 414,426
Operating lease liabilities   825,431       $ 485,747
Total operating lease payments   1,447,668        
Long-term portion of operating lease liabilities   $ 576,762        
Weighted average remaining lease term   1 year 8 months 12 days        
San Jose, California [Member]            
Commitments And Contingencies [Line Items]            
Operating lease, renewal term         3 years  
Operating leases, rent expense $ 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 leases, rent expense 9,773          
Costa Mesa, California [Member] | Maximum [Member]            
Commitments And Contingencies [Line Items]            
Maximum monthly lease payment $ 10,200