Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 31, 2024	Jul. 31, 2023
Computation of basic and diluted earnings per share of common stock
Net income	$ 57,248	$ 86,830
Basic earnings per common share:
Basic weighted average common shares outstanding (in shares)	39,542	40,749
Basic earnings per common share (in dollars per share)	$ 1.45	$ 2.13
Diluted earnings per common share:
Basic weighted average common shares outstanding (in shares)	39,542	40,749
Add: Common Stock Equivalents (in shares)	684	728
Diluted weighted average common shares outstanding (in shares)	40,226	41,477
Diluted earnings per common share (in dollars per share)	$ 1.42	$ 2.09
Shares were not included in the calculation of Diluted loss per common share
Anti-dilutive shares (in shares)	0	0