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Summary of Significant Accounting Policies (Details Narrative)		12 Months Ended
	Mar. 31, 2017 USD ($) ft²	Apr. 30, 2020 USD ($) shares	Apr. 30, 2019 USD ($) shares	Apr. 30, 2020 EUR (€)	May 02, 2019 USD ($)
Performance obligation revenue of next twelve months		$ 1,000,000
Revenue remaining performance obligation, percentage		79.00%
Revenue remaining performance obligation		$ 800,000
Antidilutive securities excluded from computation of earnings per share, shares | shares		5,564,438	5,013,981
Share based compensation		$ 300,000	$ 300,000
Right-of-use asset		1,165,000
Lease liability		$ 1,307,000
ASU 2016-02 [Member]
Right-of-use asset					$ 1,400,000
Lease liability					1,500,000
Deferred rent					39,000
Unamortized lease incentive receivable					$ 108,000
Monroe Township [Member]
Term of lease	7 years	7 years		7 years
Area of land | ft²	56,000
Tenant improvement work	$ 137,563
Santander Bank [Member] | Letter 2 [Member] | March 2020 [Member]
Letters of credit outstanding, amount		$ 322,734
Santander Bank [Member] | Letter 2 [Member] | May 2020 [Member]
Letters of credit outstanding, amount		$ 64,547
Line of credit expiration period		Sep. 30, 2021
Foreign Financial Institutions [Member]
Cash		$ 300,000
One Agreement [Member] | Barclays Bank [Member]
Long-term line of credit		$ 400,000
Line of credit facility, commitment fee percentage		1.00%
Letters of credit outstanding, amount
One Agreement [Member] | Barclays Bank [Member] | Euro [Member]
Long-term line of credit | €				€ 300,000
Letters of credit outstanding, amount
Other Agreement [Member] | Santander Bank [Member] | Letter 1 [Member]
Letters of credit outstanding, amount		$ 125,690
Line of credit expiration period		Feb. 21, 2021
Other Agreement [Member] | Santander Bank [Member] | Letter 2 [Member]
Letters of credit outstanding, amount		$ 645,467

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