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Business Segments and Foreign Operations (Summarized Information By Reportable Segments) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Feb. 28, 2018 USD ($) | Feb. 28, 2017 USD ($) | Feb. 28, 2018 USD ($) item | Feb. 28, 2017 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |
Number of reportable segments | item |  |  |  | 3 |
Net sales |  | $ 101,256 | $ 96,519 | $ 198,853 | $ 185,767
Income from operations |  | 19,368 | 18,862 | 36,504 | 35,378
Depreciation and amortization expense |  | 1,969 | 1,678 | 3,886 | 3,298
Interest income |  | 131 | 133 | 264 | 280
Interest expense |  | 1,002 | 598 | 1,843 | 1,129
Unallocated Corporate [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Income from operations | [1] | (6,681) | (6,760) | (13,031) | (13,157)
Depreciation and amortization expense | [1] | 196 | 10 | 388 | 18
Americas Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 44,967 | 45,078 | 91,130 | 87,918
Income from operations |  | 10,336 | 10,710 | 21,366 | 21,459
Depreciation and amortization expense |  | 1,046 | 1,090 | 2,140 | 2,139
Interest income |  |  | 2 | 1 | 4
Interest expense |  | 999 | 595 | 1,838 | 1,122
EMEA Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 39,632 | 36,205 | 74,660 | 66,462
Income from operations |  | 10,532 | 10,327 | 18,368 | 17,505
Depreciation and amortization expense |  | 646 | 517 | 1,205 | 1,018
Interest income |  | 118 | 109 | 237 | 189
Asia-Pacific Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 16,657 | 15,236 | 33,063 | 31,387
Income from operations |  | 5,181 | 4,585 | 9,801 | 9,571
Depreciation and amortization expense |  | 81 | 61 | 153 | 123
Interest income |  | 13 | 22 | 26 | 87
Interest expense |  | $ 3 | $ 3 | $ 5 | $ 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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