Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2020	May 31, 2019	Aug. 31, 2016
Cash Flows From Operating Activities:
Net income	$ 5,541	$ 21,284
Adjustments to reconcile net income to net cash used in operating activities:
Provision for doubtful accounts	129	2,616
Amortization and depreciation	11,668	12,326
Deferred income taxes	(2,147)	668
Net (gain) loss on sale of property, plant and equipment	40	(200)
Amortization of deferred borrowing costs	135	136
Share-based compensation expense	1,766	1,350
Effects of changes in assets and liabilities, net of acquisitions:
Accounts receivable	8,721	(14,228)
Inventories	(4,449)	7,681
Prepaid expenses and other	(941)	(1,240)
Other assets	123	185
Net change in contract assets and liabilities	3,168	(55,088)
Accounts payable	(15,328)	7,068
Other accrued liabilities and income taxes payable	(19,610)	(454)
Net cash used in operating activities	(11,184)	(17,896)
Cash Flows Used For Investing Activities:
Proceeds from sale of property, plant and equipment	0	210
Purchase of Property, Plant and Equipment	(10,847)	(4,686)
Acquisition of Subsidiaries, Net of Cash Acquired	0	(38,993)
Net Cash From Investing Activities	(10,847)	(43,469)
Cash Flows From Financing Activities:
Excess Tax Benefits From Stock Options and Stock Appreciation Rights		(539)	$ (691)
Proceeds from revolving loan	76,000	187,000
Payments on revolving loan	(60,000)	(131,000)
Payments of Dividends	(4,425)	(4,440)
Net Cash Used In Financing Activities	11,036	50,869
Effect of Exchange Rate Changes on Cash	722	77
Net Increase (Decrease) In Cash & Cash Equivalents	(10,273)	(10,419)
Cash & Cash Equivalents At Beginning of Period	36,687	24,005
Cash & Cash Equivalents At End of Period	26,414	13,586
Supplemental Disclosures
Cash Paid For Interest	869	1,600
Cash Paid For Income Taxes	$ 11	$ 567