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Condensed Consolidated Statements Of Cash Flows (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Nov. 30, 2011
Nov. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net earnings $ 2,921 $ 4,286
Adjustments to reconcile net earnings to net cash provided by operating activities:    
Depreciation and amortization 3,125 2,926
Provision for uncollectible accounts receivable 47 21
Deferred income taxes (2,596) (78)
Share-based compensation expense 898 933
Other, net 1,014 (114)
Changes in assets and liabilities:    
Receivables 162 4,429
Inventories (9,565) (7,134)
Other current assets (928) 483
Accounts payable 8,775 6,550
Other current liabilities (6,399) (8,350)
Current taxes payable 3,553 (812)
Other noncurrent assets and liabilities 5,200 (967)
Net cash provided by operating activities 6,207 2,173
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (2,632) (1,484)
Proceeds from sale of property, plant and equipment   43
Acquisition of business, net of cash acquired   (1,279)
Proceeds (payment) for settlement of net investment hedge 476 (734)
Net cash used in investing activities (2,156) (3,454)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Issuance of common stock under share-based compensation plans (579) (187)
Principal payments on long-term debt (1,071) (1,071)
Excess tax benefits from share-based compensation 135 609
Dividends paid (1,143) (1,064)
Net cash used in financing activities (2,658) (1,713)
Effect of exchange rate changes on cash (829) 111
Net increase (decrease) in cash and cash equivalents 564 (2,883)
Cash and cash equivalents, beginning of period 108,167 83,418
Cash and cash equivalents, end of period $ 108,731 $ 80,535