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 3 Months Ended
Mar. 13, 2019
May 31, 2017
Aug. 25, 2015
Sep. 10, 2014
Oct. 31, 2019
Sep. 30, 2019
Dec. 31, 2019
Jul. 15, 2019
Jul. 01, 2019
Jan. 01, 2019
Commitments And Contingencies [Line Items]                    
Operating lease right-of-use assets             $ 2,057,576      
Operating lease liabilities             722,291      
Total operating lease payments             2,239,647      
Long-term portion of operating lease liabilities             1,402,193      
ASU No. 2016-02 [Member]                    
Commitments And Contingencies [Line Items]                    
Operating lease right-of-use assets             2,057,576     $ 414,426
Operating lease liabilities             722,291     $ 485,747
Total operating lease payments             2,239,647      
Long-term portion of operating lease liabilities             $ 1,402,193      
Weighted average remaining lease term             2 years 8 months 12 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]                    
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