Consolidated Statements Of Changes In Stockholders' Equity - USD ($)	Preferred Stock [Member]	Common Stock [Member]	Capital In Excess Of Par Value [Member]	Retained Earnings [Member]	Total
Balance at Apr. 30, 2022		$ 60,379	$ 41,654,410	$ 46,619,208	$ 88,333,997
Recognition of stock-based compensation			184,343		184,343
Restricted stock awards		255	147,817		148,072
Net loss from discontinued operations				(34,769,809)	(34,769,809)
Net (loss) income from continuing operations				14,194,424	14,194,424
Net loss					(20,575,385)
Balance at Apr. 30, 2023		60,634	41,986,570	26,043,823	68,091,027
Recognition of stock-based compensation			381,034		381,034
Exercise of stock options		30	9,570		9,600
Restricted stock awards		529	76,220		76,749
Net loss from discontinued operations
Net (loss) income from continuing operations					(2,486,157)
Net loss				(2,486,157)	(2,486,157)
Balance at Apr. 30, 2024		$ 61,193	$ 42,453,394	$ 23,557,666	$ 66,072,253