Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2024	Oct. 31, 2023
Income Statement [Abstract]
Total revenue	$ 3,946,771	$ 4,064,400	$ 8,044,508	$ 7,933,651
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	2,988,212	3,178,839	6,130,693	6,170,336
Operating expenses	609,679	579,703	1,219,153	1,140,558
Depreciation and amortization	96,592	85,598	191,001	168,503
Interest, net	12,553	12,306	26,620	24,801
Income before income taxes	239,735	207,954	477,041	429,453
Federal and state income taxes	58,817	49,172	115,925	101,434
Net income	$ 180,918	$ 158,782	$ 361,116	$ 328,019
Net income per common share
Basic (in dollars per share)	$ 4.87	$ 4.27	$ 9.73	$ 8.80
Diluted (in dollars per share)	$ 4.85	$ 4.24	$ 9.68	$ 8.76
Basic weighted average shares outstanding (in shares)	37,124,541	37,227,932	37,105,886	37,264,442
Plus effect of stock compensation (in shares)	186,938	203,143	202,392	187,811
Diluted weighted average shares outstanding (in shares)	37,311,479	37,431,075	37,308,278	37,452,253