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 ($)
6 Months Ended
May 31, 2017
Aug. 25, 2015
Feb. 26, 2015
Sep. 10, 2014
Jun. 30, 2018
San Jose, California [Member] | Amended Sub-lease Agreement [Member]          
Commitments And Contingencies [Line Items]          
Operating leases, rent expense, net         $ 4,578
Lease expiration date   Jun. 30, 2019      
San Jose, California [Member] | Sub-lease Agreement [Member]          
Commitments And Contingencies [Line Items]          
Operating leases, rent expense, sublease rentals         $ 6,668
Lease expiration date     Jun. 30, 2019    
Costa Mesa, California [Member]          
Commitments And Contingencies [Line Items]          
Operating leases, rent expense $ 9,040        
Lease expiration date Sep. 30, 2019        
Balzer Family Investments Lp [Member]          
Commitments And Contingencies [Line Items]          
Operating leases expiration period       60 months  
Operating leases, rent expense       $ 36,720  
Number of shares issued to landlord as prepaid rent and tenant improvements       41,563  
Payments for rent       $ 400,000  
Operating leases, rent expense, net       6,732  
Balzer Family Investments Lp [Member] | Term Leases [Member]          
Commitments And Contingencies [Line Items]          
Payments for tenant improvements       100,000  
Balzer Family Investments Lp [Member] | Common Stock [Member]          
Commitments And Contingencies [Line Items]          
Shares issued to landlord as prepaid rent and tenant improvements value       500,000  
Payments for rent       $ 400,000