Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Income Statement [Abstract]
Total revenue	$ 3,978,575	$ 3,262,942	$ 8,433,219	$ 6,444,935
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	3,167,633	2,545,352	6,786,027	5,003,458
Operating expenses	539,207	500,644	1,082,478	979,572
Depreciation and amortization	78,117	74,258	154,412	150,146
Interest, net	13,502	13,520	27,318	27,250
Income before income taxes	180,116	129,168	382,984	284,509
Federal and state income taxes	42,561	32,337	92,497	68,519
Net income	$ 137,555	$ 96,831	$ 290,487	$ 215,990
Net income per common share
Basic (in dollars per share)	$ 3.69	$ 2.61	$ 7.80	$ 5.81
Diluted (in dollars per share)	$ 3.67	$ 2.59	$ 7.75	$ 5.78
Basic weighted average shares outstanding (in shares)	37,277,080	37,162,984	37,250,580	37,144,744
Plus effect of stock compensation (in shares)	246,679	205,669	215,335	205,669
Diluted weighted average shares outstanding (in shares)	37,523,759	37,368,653	37,465,915	37,350,413
Dividends declared per share (in dollars per share)	$ 0.38	$ 0.35	$ 0.76	$ 0.69