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, 2019
Jul. 31, 2018
Statement of Cash Flows [Abstract]    
Cash $ 7,243,580 $ 10,423,660
Restricted cash 452,021 190,506
Total cash and restricted cash $ 7,695,601 $ 10,614,166