Significant Accounting Policies (Revenue Disaggregated By Principal End-User Markets) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 108,676,743	$ 100,216,614	$ 214,249,599	$ 185,956,048
Industrial Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	70,679,415	55,094,535	141,008,904	102,339,427
Consumer Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	32,028,590	39,712,171	60,926,794	72,316,047
Medical / Life Sciences [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 5,968,738	$ 5,409,908	$ 12,313,901	$ 11,300,574