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
Sep. 30, 2020
Dec. 31, 2019
Jul. 15, 2019
Jul. 01, 2019
Jan. 01, 2019
Commitments And Contingencies [Line Items]                      
Operating lease right-of-use assets             $ 1,487,116 $ 2,057,576      
Operating lease liabilities             845,108 722,291      
Total operating lease payments             1,670,460        
Long-term portion of operating lease liabilities             765,209 $ 1,402,193      
ASU No. 2016-02 [Member]                      
Commitments And Contingencies [Line Items]                      
Operating lease right-of-use assets             1,487,116       $ 414,426
Operating lease liabilities             845,108       $ 485,747
Total operating lease payments             1,670,460        
Long-term portion of operating lease liabilities             $ 765,209        
Weighted average remaining lease term             1 year 10 months 24 days        
San Jose, California [Member]                      
Commitments And Contingencies [Line Items]                      
Operating leases, rent expense         $ 52,970            
Lease expiration date     Jun. 30, 2019                
Operating lease, renewal term                   3 years  
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 leases, rent expense   $ 9,040     9,773            
Lease expiration date   Sep. 30, 2019                  
Operating lease, renewal term                 2 years    
Costa Mesa, California [Member] | Maximum [Member]                      
Commitments And Contingencies [Line Items]                      
Maximum monthly lease payment         $ 10,200            
Balzer Family Investments Lp [Member] | San Jose, California [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