Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2023	Jul. 31, 2022
Cash flows from operating activities:
Net income	$ 169,237	$ 152,932
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	82,905	76,295
Amortization of debt issuance costs	278	345
Share-based compensation	10,468	16,185
(Gain) loss on disposal of assets and impairment charges	(1,448)	230
Deferred income taxes	15,895	24,727
Changes in assets and liabilities:
Receivables	(13,179)	(37,859)
Inventories	(48,256)	(2,899)
Prepaid expenses	(2,518)	(6,504)
Accounts payable	(4,344)	34,799
Accrued expenses	(20,150)	(7,865)
Income taxes	39,139	23,953
Other, net	1,104	1,867
Net cash provided by operating activities	229,131	276,206
Cash flows from investing activities:
Purchase of property and equipment	(68,903)	(82,070)
Payments for acquisition of businesses, net of cash acquired	(13,297)	(1,065)
Proceeds from sales of assets	5,784	5,019
Net cash used in investing activities	(76,416)	(78,116)
Cash flows from financing activities:
Payments of long-term debt	(29,665)	(15,998)
Payments of cash dividends	(14,945)	(13,128)
Repurchase of common stock	(29,893)	0
Tax withholdings on employee share-based awards	(17,969)	(15,478)
Net cash used in financing activities	(92,472)	(44,604)
Net increase in cash and cash equivalents	60,243	153,486
Cash and cash equivalents at beginning of the period	378,869	158,878
Cash and cash equivalents at end of the period	439,112	312,364
Cash paid during the period for:
Interest, net of amount capitalized	10,701	8,689
Income taxes, net	0	0
Noncash investing and financing activities:
Purchased property and equipment in accounts payable	42,188	42,008
Right-of-use assets obtained in exchange for new finance lease liabilities	8,345	736
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 2,214	$ 0