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Schedule of Right-of Use Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Apr. 30, 2021
Leases
Operating right-of-use asset, net	$ 967	$ 1,036
Right-of-use liability- current	317	347
Right-of-use liability- long term	774	$ 819
Total lease liability	$ 1,091
Weighted average remaining lease term- operating leases	3 years 1 month 6 days
Weighted average discount rate- operating leases	8.20%

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Amount of lessee's right to use underlying asset under operating lease.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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