Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2024	May 31, 2023	Aug. 31, 2023
Cash flows from operating activities:
Net (loss) income	$ (198,511)	$ 13,608	$ (250,320)	$ 324
Adjustments to reconcile net (loss) income to cash (used in) provided by operating activities:
Goodwill impairment charges	215,941		215,941
Other asset impairment charges			2,040	5,455
Exit-related asset impairments			176	254
Depreciation and amortization			72,188	66,390
Inventory write-downs				575
Deferred income taxes			(54,065)	(933)
Undistributed equity in earnings of joint ventures	(300)	(285)	(1,003)	(1,386)
Share-based compensation expense			6,197	8,438
(Gain) loss on disposal of assets, net			(511)	10
Unrealized foreign exchange loss, net			463	126
Credit loss, net			199	195
Changes in assets and liabilities, net of acquisitions:
Accounts receivable			(4,516)	(71,016)
Inventories			(46,750)	23,215
Income taxes			171	(2,992)
Prepaid expenses and other current assets			9,896	(12,476)
Other long-term assets			(5,797)	(3,868)
Operating lease assets and liabilities			(440)	(276)
Accounts payable			6,819	10,259
Accrued payroll and related liabilities			(12,330)	(30,451)
Other accrued liabilities			2,836	10,381
Environmental liabilities			(2,180)	(2,542)
Other long-term liabilities			1,418	2,850
Distributed equity in earnings of joint ventures			2,350	2,000
Net cash (used in) provided by operating activities			(57,218)	4,532
Cash flows from investing activities:
Capital expenditures			(56,258)	(101,270)
Acquisitions, net of acquired cash				(26,902)
Proceeds from insurance and sale of assets			2,829	10,775
Purchase of investments			(6,000)
Net cash used in investing activities			(59,429)	(117,397)
Cash flows from financing activities:
Borrowings from long-term debt			579,500	501,761
Repayment of long-term debt			(421,414)	(403,129)
Payment of debt issuance costs				(156)
Taxes paid related to net share settlement of share-based payment awards			(5,282)	(7,611)
Distributions to noncontrolling interests			(738)	(1,214)
Dividends paid			(16,306)	(16,023)
Net cash provided by financing activities			135,760	73,628
Effect of exchange rate changes on cash			44	(55)
Net increase (decrease) in cash and cash equivalents			19,157	(39,292)
Cash and cash equivalents as of beginning of period			6,032	43,803	$ 43,803
Cash and cash equivalents as of end of period	$ 25,189	$ 4,511	25,189	4,511	$ 6,032
Cash paid during the period for:
Interest			16,793	11,763
Income taxes, net			355	4,565
Schedule of noncash investing and financing transactions:
Purchases of property, plant and equipment included in liabilities			$ 5,961	$ 12,605