Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2023	May 31, 2022
Cash flows from operating activities:
Net income	$ 13,608	$ 75,504	$ 324	$ 160,945
Adjustments to reconcile net income to cash provided by operating activities:
Asset impairment charges			5,455	932
Exit-related asset impairments			254
Depreciation and amortization			66,390	54,566
Inventory write-downs			575	3,199
Deferred income taxes			(933)	23,851
Undistributed equity in earnings of joint ventures	(285)	(762)	(1,386)	(1,589)
Share-based compensation expense			8,438	14,046
Loss on disposal of assets, net			10	1,192
Unrealized foreign exchange loss, net			126	193
Credit loss, net			195	17
Changes in assets and liabilities, net of acquisitions:
Accounts receivable			(71,016)	(43,340)
Inventories			23,215	(164,196)
Income taxes			(2,992)	8,843
Prepaid expenses and other current assets			(12,476)	(14,771)
Other long-term assets			(3,868)	(1,068)
Operating lease assets and liabilities			(276)	(2,049)
Accounts payable			10,259	44,874
Accrued payroll and related liabilities			(30,451)	(16,890)
Other accrued liabilities			10,381	1,747
Environmental liabilities			(2,542)	(14,744)
Other long-term liabilities			2,850	650
Distributed equity in earnings of joint ventures			2,000	1,600
Net cash provided by operating activities			4,532	58,008
Cash flows from investing activities:
Capital expenditures			(101,270)	(97,972)
Acquisitions, net of acquired cash			(26,902)	(177,070)
Proceeds from insurance and sale of assets			10,775	18,244
Purchase of equity investment				(5,000)
Deposit on land option				(80)
Net cash used in investing activities			(117,397)	(261,878)
Cash flows from financing activities:
Borrowings from long-term debt			501,761	895,175
Repayment of long-term debt			(403,129)	(655,440)
Payment of debt issuance costs			(156)
Repurchase of Class A common stock				(17,858)
Taxes paid related to net share settlement of share-based payment awards			(7,611)	(11,003)
Distributions to noncontrolling interests			(1,214)	(2,330)
Dividends paid			(16,023)	(16,172)
Net cash provided by financing activities			73,628	192,372
Effect of exchange rate changes on cash			(55)	(195)
Net decrease in cash and cash equivalents			(39,292)	(11,693)
Cash and cash equivalents as of beginning of period			43,803	27,818
Cash and cash equivalents as of end of period	$ 4,511	$ 16,125	4,511	16,125
Cash paid during the period for:
Interest			11,763	3,249
Income taxes, net			4,565	10,502
Schedule of noncash investing and financing transactions:
Purchases of property, plant and equipment included in liabilities			$ 12,605	$ 19,868