Right-of-Use Assets and Lease Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Apr. 30, 2023	Apr. 30, 2022
Disclosure Text Block [Abstract]
Operating Lease, Expense	$ 1.9	$ 1.6
Operating Lease, Payments	$ 1.9	$ 2.0
Operating Lease, Weighted Average Remaining Lease Term	5 years 7 months 6 days	6 years 3 months 18 days
Operating Lease, Weighted Average Discount Rate, Percent	6.23%	6.16%