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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS (Tables) | 12 Months Ended
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Apr. 30, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule of valuation and qualifying accounts |
Description |  | Balance at Beginning of Year |  |  | Additions Charged to Costs and Expenses |  |  | Charged to Other Accounts |  |  | Deductions |  |  | Balance at End of Year |
Reserve Deducted in the Balance Sheets from the Asset to which it applies: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for Deferred Tax Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year ended April 30, 2020 |  | $ | 14,187,771 |  |  |  | – |  |  |  | 1,341,187 |  |  |  | – |  |  |  | 15,528,958 |
Year ended April 30, 2019 |  | $ | 13,235,601 |  |  |  | – |  |  |  | 952,170 |  |  |  | – |  |  |  | 14,187,771 |

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