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Schedule of Operating Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Leases
Operating lease cost	$ 92	$ 80	$ 184	$ 159
Short-term lease cost	5	3	10	5
Total lease cost	$ 97	$ 83	$ 194	$ 164

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- Definition

Amount of lease cost recognized by lessee for lease contract.

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-Publisher FASB
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- Definition

Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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