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Other Current Assets - Schedule of Other Current Assets (Details) - USD ($) $ in Thousands	Apr. 30, 2021	Apr. 30, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deposits	$ 68	$ 60
Other receivables	21	2
Prepaid insurance	194	124
Prepaid offering costs		275
Prepaid expenses- other	204	127
Other current assets	$ 487	$ 588

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- Definition

Amount of asset related to consideration paid in advance for offering costs that provide economic benefits within a future period of one year or the normal operating cycle, if longer.

+ References

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Carrying value of amounts transferred to third parties for security purposes that are expected to be returned or applied towards payment within one year or during the operating cycle, if shorter.

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