Condensed Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Feb. 29, 2012	Feb. 28, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 15,695	$ 15,611
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	6,235	5,880
Provision for uncollectible accounts receivable	129	188
Deferred income taxes	(1,299)	(575)
Share-based compensation expense	1,829	1,586
Other, net	587	(373)
Changes in assets and liabilities:
Receivables	150	(10,137)
Inventories	(20,221)	(8,003)
Other current assets	(1,798)	(762)
Accounts payable	7,796	11,245
Other current liabilities	(8,670)	(7,877)
Current taxes payable	(1,260)	(1,525)
Other noncurrent assets and liabilities	5,692	(1,343)
Net cash provided by operating activities	4,865	3,915
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(4,723)	(4,402)
Proceeds from sale of property, plant and equipment	107	53
Acquisition of business, net of cash acquired		(1,279)
Proceeds (payment) for settlement of net investment hedge	1,548	(734)
Net cash used in investing activities	(3,068)	(6,362)
CASH FLOWS FROM FINANCING ACTIVITIES:
Issuance of common stock under share-based compensation plans	276	809
Common stock withheld from share-based compensation for payroll tax withholdings	(577)	(843)
Principal payments on long-term debt	(2,142)	(2,143)
Net borrowing on revolving line of credit		389
Excess tax benefits from share-based compensation	273	877
Dividends paid	(2,286)	(2,133)
Net cash used in financing activities	(4,456)	(3,044)
Effect of exchange rate changes on cash	(555)	521
Net decrease in cash and cash equivalents	(3,214)	(4,970)
Cash and cash equivalents, beginning of period	108,167	83,418
Cash and cash equivalents, end of period	$ 104,953	$ 78,448