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Business Segments and Foreign Operations (Summarized Information Of Reportable Segments) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 31, 2015
Aug. 31, 2014
Aug. 31, 2013
Segment Reporting Information [Line Items]      
Net sales $ 378,150 $ 382,997 $ 368,548
Income from operations 65,390 63,737 56,637
Depreciation and amortization expense 6,464 5,860 5,359
Interest income 584 596 506
Interest expense 1,205 1,002 693
Unallocated Corporate [Member]      
Segment Reporting Information [Line Items]      
Income from operations [1] (24,059) (21,986) (21,915)
Depreciation and amortization expense [1] 31 24 10
Americas [Member]      
Segment Reporting Information [Line Items]      
Net sales 187,344 180,806 180,544
Income from operations 46,674 41,356 39,383
Depreciation and amortization expense 4,078 4,229 4,189
Interest income 9 7 1
Interest expense 1,197 994 684
EMEA [Member]      
Segment Reporting Information [Line Items]      
Net sales 136,847 151,368 137,360
Income from operations 30,173 34,003 30,174
Depreciation and amortization expense 2,102 1,363 960
Interest income 417 417 348
Asia-Pacific [Member]      
Segment Reporting Information [Line Items]      
Net sales 53,959 50,823 50,644
Income from operations 12,602 10,364 8,995
Depreciation and amortization expense 253 244 200
Interest income 158 172 157
Interest expense $ 8 $ 8 $ 9
[1] Unallocated corporate expenses are general corporate overhead expenses not directly attributable to any one of the operating segments. These expenses are reported separate from the Company's identified segments and are included in Selling, General and Administrative expenses on the Company's consolidated statements of operations.