Significant Accounting Policies (Revenue Disaggregated By Principal End-User Markets) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 74,719,360	$ 98,691,684	$ 159,496,338	$ 196,822,040
Industrial Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	49,084,765	69,366,781	104,156,990	137,242,311
Consumer Electronics [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	21,241,302	22,090,863	45,485,251	44,748,749
Medical / Life Sciences [Member]
Disaggregation of Revenue [Line Items]
Total Net Trade Sales	$ 4,393,293	$ 7,234,040	$ 9,854,097	$ 14,830,980