Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Additional Information (Detail)

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Related Party Transactions - Additional Information (Detail) - USD ($)
 12 Months Ended
Jul. 28, 2017
Jul. 26, 2017
May 31, 2017
Private Equity Offering      
Related Party Transaction [Line Items]      
Proceeds from private equity offering     $ 729,500
Exercise price of warrants, per share     $ 1.00
Alpha Venture Capital Partners, L.P.      
Related Party Transaction [Line Items]      
Warrants to purchase common shares, shares 33,333    
Exercise price of warrants, per share $ 1.00    
Alpha Venture Capital Partners, L.P. | Short Term Convertible Promissory Notes      
Related Party Transaction [Line Items]      
Purchased short term convertible promissory note interest 7.00%    
Proceeds from private equity offering $ 50,000    
Jordan G. Naydenov | Private Equity Offering      
Related Party Transaction [Line Items]      
Warrants to purchase common shares, shares   66,666  
Exercise price of warrants, per share   $ 1.00  
Jordan G. Naydenov | Short Term Convertible Promissory Notes | Private Equity Offering      
Related Party Transaction [Line Items]      
Purchased short term convertible promissory note interest   7.00%  
Proceeds from private equity offering   $ 100,000  
Anthony D Caracciolo      
Related Party Transaction [Line Items]      
Warrants to purchase common shares, shares     333,333
Exercise price of warrants, per share     $ 1.00
Anthony D Caracciolo | Short Term Convertible Promissory Notes      
Related Party Transaction [Line Items]      
Purchased short term convertible promissory note interest     7.00%
Proceeds from private equity offering     $ 1,000,000