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Secured Revolving Credit Facility - Additional Information (Detail) - USD ($)
 9 Months Ended
Jul. 21, 2017
Mar. 20, 2015
Mar. 04, 2018
Secured Revolving Credit Facility [Member]      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity   $ 10,000,000  
Secured revolving credit facility term   3 years  
Secured revolving credit facility renewal term   1 year  
The Agreement [Member]      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity $ 10,000,000    
Secured revolving credit facility term 3 years    
Credit facility, interest rate description     Loan advances bear interest at either 50 basis points above Chase’s floating prime rate (“CBFR”) or 150 basis points in excess of the LIBOR rate for the applicable period (the “Adjusted LIBO Rate”).
Credit facility, closing fee paid $ 25,000    
Credit facility, commitment fee percentage 0.25%    
Credit facility, commitment fee description     (i) a commitment fee payable in arrears at a rate of .25% per annum on the average daily amount of the available revolving commitment under the New Facility during the prior calendar month; and (ii) monthly letter of credit fees payable in arrears at the applicable Adjusted LIBO Rate on the outstanding amount of letters of credit issued and outstanding during the prior month.
Credit facility, default status additional rate 2.00%    
The Agreement [Member] | Letter of Credit [Member]      
Line of Credit Facility [Line Items]      
Maximum borrowing capacity $ 500,000    
Credit facility, outstanding $ 0    
The Agreement [Member] | Prime Rate [Member]      
Line of Credit Facility [Line Items]      
Credit facility, interest range 0.50%    
The Agreement [Member] | LIBOR [Member]      
Line of Credit Facility [Line Items]      
Credit facility, interest range 1.50%