Significant Accounting Policies (Revenue Disaggregated By Principal End-User Markets) (Details) - USD ($)	3 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 105,572,856	$ 85,739,434
Industrial Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	70,329,487	47,244,892
Consumer Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	28,898,205	32,603,876
Medical / Life Sciences [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 6,345,164	$ 5,890,666