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Long-Term Debt - Mortgage (Tables)
9 Months Ended
Apr. 30, 2017
Long-Term Debt – Mortgage [Abstract]  
Schedule of long-term debt
April 30, 2017 July 31, 2016
Current
Annual Final Due Due Due Due
Interest Payment Within After Within After
      Rate       Date       One Year       One Year       One Year       One Year
           Bond St. building, Brooklyn, NY 3.54% 2/1/2020 $      161,123 $      5,508,441 $      156,846 $      5,629,679
  Less: Deferred financing costs 62,925 80,079
Total $ 161,123 $ 5,445,516 $ 156,846 $ 5,549,600