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Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Parenthetical)

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (Parenthetical) - USD ($)
Jul. 31, 2018
Jul. 31, 2017
Statement of Cash Flows [Abstract]    
Cash $ 10,423,660 $ 6,213,569
Restricted cash 190,506
Total cash and restricted cash $ 10,614,166 $ 6,213,569