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Business Segments and Foreign Operations (Summarized Information Of Reportable Segments) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
May 31, 2014 | May 31, 2013 | May 31, 2014 | May 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | $ 95,650 |  | $ 93,103 |  | $ 285,375 |  | $ 275,079 |
Income from operations | 15,103 |  | 14,958 |  | 47,122 |  | 45,258 |
Depreciation and amortization expense | 1,488 |  | 1,327 |  | 4,337 |  | 3,765 |
Interest income | 136 |  | 105 |  | 425 |  | 362 |
Interest expense | 268 |  | 182 |  | 709 |  | 483 |
Unallocated Corporate [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Income from operations | (4,758) | [1] | (5,250) | [1] | (16,016) | [1] | (15,828) | [1]
Depreciation and amortization expense | 5 | [1] | 2 | [1] | 20 | [1] | 5 | [1]
Americas [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 45,096 |  | 47,677 |  | 134,366 |  | 133,249 |
Income from operations | 9,991 |  | 11,829 |  | 29,893 |  | 31,297 |
Depreciation and amortization expense | 1,035 |  | 1,030 |  | 3,193 |  | 2,895 |
Interest income | 3 |  |  |  | 5 |  | 1 |
Interest expense | 266 |  | 179 |  | 702 |  | 476 |
EMEA [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 36,678 |  | 32,758 |  | 111,305 |  | 101,116 |
Income from operations | 7,306 |  | 6,175 |  | 24,740 |  | 21,783 |
Depreciation and amortization expense | 384 |  | 240 |  | 947 |  | 721 |
Interest income | 104 |  | 74 |  | 318 |  | 252 |
Asia-Pacific [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Net sales | 13,876 |  | 12,668 |  | 39,704 |  | 40,714 |
Income from operations | 2,564 |  | 2,204 |  | 8,505 |  | 8,006 |
Depreciation and amortization expense | 64 |  | 55 |  | 177 |  | 144 |
Interest income | 29 |  | 31 |  | 102 |  | 109 |
Interest expense | $ 2 |  | $ 3 |  | $ 7 |  | $ 7 |
[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 condensed consolidated statements of operations.

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