Income Tax (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021	Apr. 30, 2022	Apr. 23, 2020
Income Tax [Line Items]
Effective tax rate	59.03%	32.45%	44.26%	15.97%
Operating loss carryforwards, valuation allowance	$ 5,080,259		$ 5,080,259		$ 4,543,819
Cumulative earnings	11,255,000		11,255,000
Income Tax Expense Benefit	1,255,967	$ 1,513,512	1,785,367	$ 2,270,457
Paycheck Protection Program [Member] | U.S. Bank [Member]
Income Tax [Line Items]
Loan						$ 6,282,973
SigmaTron and Wagz [Member] | Federal And State [Member]
Income Tax [Line Items]
Operating loss carryforwards, valuation allowance	4,627,775		4,627,775
Vietnam [Member]
Income Tax [Line Items]
Operating loss carryforwards, valuation allowance	$ 452,484		$ 452,484