Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Feb. 28, 2018	Feb. 28, 2017
Cash flows from operating activities:
Net income	$ 61,140	$ 10,991
Adjustments to reconcile net income to cash provided by (used in) operating activities
Depreciation and amortization	24,682	25,141
Other asset impairment charges (recoveries), net	(88)	401
Exit-related (gains), asset impairments and accelerated depreciation, net	0	(404)
Inventory write-down	38	0
Share-based compensation expense	8,095	5,570
Deferred income taxes	(14,014)	529
Undistributed equity in earnings of joint ventures	(556)	(2,632)
Loss on disposal of assets, net	252	74
Unrealized foreign exchange gain, net	(297)	(55)
Bad debt expense, net	15	56
Changes in assets and liabilities, net of acquisitions:
Accounts receivable	(62,049)	(24,506)
Inventories	(49,432)	(30,423)
Income taxes	1,692	(188)
Prepaid expenses and other current assets	2,947	4,407
Other long-term assets	(82)	18
Accounts payable	15,186	17,058
Accrued payroll and related liabilities	(8,507)	(2,122)
Other accrued liabilities	4,534	(1,021)
Environmental liabilities	3,620	1,274
Other long-term liabilities	1,673	(875)
Distributed equity in earnings of joint ventures	520	2,939
Net cash provided by (used in) operating activities	(10,631)	6,232
Cash flows from investing activities:
Capital expenditures	(26,762)	(21,542)
Purchase of cost method investment	0	(6,017)
Acquisition	(2,300)	0
Joint venture receipts, net	3	273
Proceeds from sale of assets	1,639	1,577
Net cash used in investing activities	(27,420)	(25,709)
Cash flows from financing activities:
Borrowings from long-term debt	314,483	245,633
Repayment of long-term debt	(249,916)	(228,673)
Payment of debt issuance costs	0	(109)
Repurchase of Class A common stock	(3,601)	0
Taxes paid related to net share settlement of share-based payment awards	(2,888)	(3,301)
Distributions to noncontrolling interests	(817)	(852)
Purchase of noncontrolling interest	(600)	0
Dividends paid	(10,633)	(10,122)
Net cash provided by financing activities	46,028	2,576
Effect of exchange rate changes on cash	(257)	(88)
Net increase (decrease) in cash and cash equivalents	7,720	(16,989)
Cash and cash equivalents as of beginning of period	7,287	26,819
Cash and cash equivalents as of end of period	$ 15,007	$ 9,830