Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2021	Jul. 31, 2020
Cash flows from operating activities:
Net income	$ 61,202	$ 27,219
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	27,714	27,097
Amortization of debt discount and debt issuance costs	642	753
Equity-based compensation	3,160	2,619
(Gain) loss on disposal and impairment of assets	(78)	394
Deferred income taxes	(140)	(5,241)
Other items, net	1,573	247
Changes in assets and liabilities net of effects of acquisitions:
Trade accounts and notes receivable	(73,479)	(23,013)
Inventories	(87,313)	14,008
Prepaid expenses and other assets	(1,491)	(3,782)
Accounts payable	(4,265)	(33,887)
Accrued compensation and employee benefits	(24,219)	(36,062)
Other accrued expenses and liabilities	21,617	13,937
Cash used in operating activities	(75,077)	(15,711)
Cash flows from investing activities:
Purchases of property and equipment	(6,814)	(4,745)
Proceeds from sale of assets	287	342
Acquisition of businesses, net of cash acquired	(123,049)	(210)
Cash used in investing activities	(129,576)	(4,613)
Cash flows from financing activities:
Repayments on revolving credit facilities	(102,872)	(58,083)
Borrowings from revolving credit facilities	195,049	14,421
Payments of principal on long-term debt	(1,278)	(2,492)
Payments of principal on finance lease obligations	(7,397)	(7,521)
Repurchases of common stock	(3,855)	0
Proceeds from exercises of stock options	863	691
Payments for taxes related to net share settlement of equity awards	(256)	(105)
Other financing activities	1,140	1,270
Cash provided by (used in) financing activities	81,394	(51,819)
Effect of exchange rates on cash and cash equivalents	(163)	943
Decrease in cash and cash equivalents	(123,422)	(71,200)
Cash and cash equivalents, beginning of period	167,012	210,909
Cash and cash equivalents, end of period	43,590	139,709
Supplemental cash flow disclosures:
Cash paid for income taxes	1,007	3,478
Cash paid for interest	$ 8,616	$ 13,115