Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details) - Schedule of restricted stock awards

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Stockholders' Equity (Details) - Schedule of restricted stock awards - $ / shares
12 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2016
Schedule of restricted stock awards [Abstract]      
Outstanding at beginning of year (in Shares) 7,436 8,501 21,501
Outstanding at beginning of year $ 4.45 $ 4.13 $ 8.84
Awarded   $ 6.95  
Awarded (in Shares)   4,250  
Vested (in Shares) (2,874) (5,140) (11,500)
Vested $ (5.20) $ (4.10) $ (2.83)
Forfeited (in Shares) (1,949) (175) (1,500)
Forfeited $ (5.18) $ (2.14) $ (2.86)
Outstanding (non-vested) at end of year (in Shares) 2,613 7,436 8,501
Outstanding (non-vested) at end of year $ 1.74 $ 4.45 $ 4.13
Weighted average market value of awards granted during year   $ 6.95