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Business Segments and Foreign Operations (Summarized Information By Reportable Segments) (Details) $ in Thousands | 3 Months Ended
--- | ---
Nov. 30, 2017 USD ($) item | Nov. 30, 2016 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of reportable segments | item |  | 3 |
Net sales |  | $ 97,597 | $ 89,248
Income from operations |  | 17,136 | 16,516
Depreciation and amortization expense |  | 1,917 | 1,620
Interest income |  | 133 | 147
Interest expense |  | 841 | 531
Unallocated Corporate [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Income from operations | [1] | (6,350) | (6,397)
Depreciation and amortization expense | [1] | 192 | 8
Americas Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales |  | 46,163 | 42,840
Income from operations |  | 11,030 | 10,749
Depreciation and amortization expense |  | 1,094 | 1,049
Interest income |  | 1 | 2
Interest expense |  | 839 | 527
EMEA Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales |  | 35,028 | 30,257
Income from operations |  | 7,836 | 7,178
Depreciation and amortization expense |  | 559 | 501
Interest income |  | 119 | 80
Asia-Pacific Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales |  | 16,406 | 16,151
Income from operations |  | 4,620 | 4,986
Depreciation and amortization expense |  | 72 | 62
Interest income |  | 13 | 65
Interest expense |  | $ 2 | $ 4
[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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