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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.

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