Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Beginning balance, value at Apr. 30, 2022	$ 8,350	$ 81,555,379	$ (58,336,414)	$ 23,227,315
Beginning balance, shares at Apr. 30, 2022	8,349,843
Accretion of stock based compensation in connection with stock option grants		7,402		7,402
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants		184,531		184,531
Net loss			(1,945,358)	(1,945,358)
Ending balance, value at Jul. 31, 2022	$ 8,350	81,747,312	(60,281,772)	21,473,890
Ending balance, shares at Jul. 31, 2022	8,349,843
Beginning balance, value at Apr. 30, 2023	$ 9,296	84,799,263	(65,950,618)	18,857,941
Beginning balance, shares at Apr. 30, 2023	9,295,837
Accretion of stock based compensation in connection with stock option grants		7,402		7,402
Stock-based compensation in connection with restricted common stock award grants and restricted common stock unit grants		184,531		184,531
Net loss			(2,894,683)	(2,894,683)
Ending balance, value at Jul. 31, 2023	$ 9,296	$ 84,991,196	$ (68,845,301)	$ 16,155,191
Ending balance, shares at Jul. 31, 2023	9,295,837