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Earnings Per Share (Narrative) (Details) - USD ($)	12 Months Ended
Earnings Per Share (Narrative) (Details) - USD ($)	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2021	May 25, 2021
Equity, Class of Treasury Stock [Line Items]
Potentially dilutive shares	48,379	0	0
Treasury Stock, Shares, Acquired	299,781	200,046	0
Share Repurchase Program 2019
Equity, Class of Treasury Stock [Line Items]
Treasury Stock, Value, Acquired, Cost Method		$ 20,000,000
Share Repurchase Program 2021
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount				$ 100,000,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 75,000,000
Treasury Stock, Value, Acquired, Cost Method	$ 25,000,000