INTERIM CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited) - USD ($)	Jul. 31, 2019	Apr. 30, 2019
Allowance for Doubtful Accounts Receivable, Current	$ 422,895	$ 619,514
Preferred Stock, Par Value Per Share	$ 0.001	$ 0.001
Preferred Stock, Shares Authorized	100,000,000	100,000,000
Preferred Stock, Shares Issued
Preferred Stock, Shares Outstanding
Common Stock, Par Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Shares, Issued	5,953,380	5,950,246

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Face amount or stated value per share of common stock.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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