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Summary of Significant Accounting Policies (Details Narrative) - USD ($)	3 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Apr. 30, 2022	Aug. 31, 2020
Product Information [Line Items]
Investment securities	$ 42,700,000		$ 49,400,000
Discount and premium	100,000	$ 0
Investment owned at cost	300,000	0
Cash and cash equivalents	9,176,000		$ 7,885,000
Share based compensation	300,000	$ 400,000
Revenue remaining performance obligation	$ 300,000
Revenue remaining performance obligation, percentage	100.00%
Antidilutive securities earnings per share	6,378,218	5,243,647
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Three and Two Customers [Member]
Product Information [Line Items]
Concentration risk percentage	69.00%	88.00%
Santander Bank [Member]
Product Information [Line Items]
Letters of credit issued amount	$ 65,000
Santander Bank [Member] | Letter 2 [Member]
Product Information [Line Items]
Letters of credit issued amount	258,000
Santander Bank [Member] | Letter 2 [Member] | August 2020 [Member]
Product Information [Line Items]
Letters of credit outstanding, Amount				$ 323,000
Foreign Financial Institutions [Member]
Product Information [Line Items]
Cash and cash equivalents	24,000
Restricted Cash and Security Agreements [Member] | Santander Bank [Member] | Letter of Credit [Member]
Product Information [Line Items]
Deposits	$ 154,000
Restricted Cash and Security Agreements [Member] | Santander Bank [Member] | Letter 1 [Member]
Product Information [Line Items]
Letters of credit outstanding, Amount				$ 645,000

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