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 3 Months Ended
Mar. 13, 2019
May 31, 2017
Aug. 25, 2015
Sep. 10, 2014
Oct. 31, 2019
Sep. 30, 2019
Jul. 15, 2019
Jul. 01, 2019
Jan. 01, 2019
Commitments And Contingencies [Line Items]                  
Operating lease right-of-use assets           $ 2,244,336      
Operating lease liabilities           682,163      
Long-term portion of operating lease liabilities           1,610,319      
ASU No. 2016-02 [Member]                  
Commitments And Contingencies [Line Items]                  
Operating lease right-of-use assets           2,244,336     $ 414,426
Operating lease liabilities           682,163     $ 485,747
Total operating lease payments, current           2,429,376      
Long-term portion of operating lease liabilities           $ 1,610,319      
Weighted average remaining lease term           2 years 10 months 24 days      
San Jose, California [Member]                  
Commitments And Contingencies [Line Items]                  
Lease expiration date     Jun. 30, 2019            
Operating lease, renewal term               3 years  
San Jose, California [Member] | Subsequent Event [Member]                  
Commitments And Contingencies [Line Items]                  
Operating leases, rent expense         $ 52,970        
San Jose, California [Member] | Maximum [Member] | Subsequent Event [Member]                  
Commitments And Contingencies [Line Items]                  
Maximum monthly lease payment         64,941        
Costa Mesa, California [Member]                  
Commitments And Contingencies [Line Items]                  
Operating leases, rent expense   $ 9,040              
Lease expiration date   Sep. 30, 2019              
Operating lease, renewal term             2 years    
Costa Mesa, California [Member] | Subsequent Event [Member]                  
Commitments And Contingencies [Line Items]                  
Operating leases, rent expense         9,773        
Costa Mesa, California [Member] | Maximum [Member] | Subsequent Event [Member]                  
Commitments And Contingencies [Line Items]                  
Maximum monthly lease payment         $ 10,200        
Balzer Family Investments Lp [Member]                  
Commitments And Contingencies [Line Items]                  
Operating leases expiration period       60 months          
Operating leases, rent expense       $ 36,720   $ 48,372      
Lease expiration date Sep. 30, 2019