Segment And Geographic Area Information (Schedule Of Net Sales And Tangible Long-lived Assets By Geographical Areas) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Apr. 30, 2024	Jan. 31, 2024	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Jan. 31, 2023	Oct. 31, 2022	Jul. 31, 2022	Apr. 30, 2024	Apr. 30, 2023
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 81,141,893	$ 95,919,888	$ 98,691,684	$ 98,130,356	$ 108,288,073	$ 92,736,725	$ 108,221,068	$ 105,189,979	$ 373,883,821	$ 414,435,845
Total tangible long-lived assets, net	41,218,379				43,013,780				41,218,379	43,013,780
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total tangible long-lived assets, net	16,938,201				20,371,298				16,938,201	20,371,298
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total tangible long-lived assets, net	3,699,857				4,212,780				3,699,857	4,212,780
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total tangible long-lived assets, net	20,091,947				17,574,899				20,091,947	17,574,899
Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Total tangible long-lived assets, net	$ 488,374				$ 854,803				488,374	854,803
Operating Segments [Member] | U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									111,520,788	117,389,877
Operating Segments [Member] | China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									38,363,805	48,584,165
Operating Segments [Member] | Vietnam [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									6,101,237	11,523,284
Operating Segments [Member] | Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									$ 217,897,991	$ 236,938,519