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LONG-TERM DEBT - MORTGAGE (Tables)
 12 Months Ended
Jul. 31, 2019
LONG-TERM DEBT - MORTGAGES AND TERM LOAN [Abstract]  
Schedule of long-term debt
July 31, 2019 July 31, 2018
Current
Annual
Interest
Rate		 Final
Payment
Date		 Due
Within
One Year		 Due
After
One Year 		Due
Within
One Year		 Due
After
One Year
Mortgage:                                    
Bond St. building, Brooklyn, NY 3.54% 2/1/2020 $ 5,298,610    $ —    $ 168,501 $ 5,298,610
Less: Deferred financing costs 11,448 — — 34,325
Total $ 5,287,162 $ — $ 168,501 $ 5,264,285