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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, 2019 USD ($) | Feb. 28, 2018 USD ($) | Feb. 28, 2019 USD ($) item | Feb. 28, 2018 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |
Number of reportable segments | item |  |  |  | 3 |
Net sales |  | $ 101,335 | $ 101,256 | $ 202,617 | $ 198,853
Income from operations |  | 19,715 | 19,368 | 36,116 | 36,504
Depreciation and amortization expense |  | 1,900 | 1,969 | 3,825 | 3,886
Interest income |  | 45 | 131 | 96 | 264
Interest expense |  | 685 | 1,002 | 1,395 | 1,843
Unallocated Corporate [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Income from operations | [1] | (6,050) | (6,681) | (13,067) | (13,031)
Depreciation and amortization expense | [1] | 53 | 196 | 105 | 388
Americas Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 43,897 | 44,967 | 91,688 | 91,130
Income from operations |  | 9,992 | 10,336 | 21,294 | 21,366
Depreciation and amortization expense |  | 1,132 | 1,046 | 2,263 | 2,140
Interest income |  | 10 |  | 16 | 1
Interest expense |  | 620 | 999 | 1,328 | 1,838
EMEA Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 40,966 | 39,632 | 79,711 | 74,660
Income from operations |  | 10,630 | 10,532 | 19,005 | 18,368
Depreciation and amortization expense |  | 644 | 646 | 1,316 | 1,205
Interest income |  | 2 | 118 | 20 | 237
Interest expense |  | 63 |  | 63 |
Asia-Pacific Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 16,472 | 16,657 | 31,218 | 33,063
Income from operations |  | 5,143 | 5,181 | 8,884 | 9,801
Depreciation and amortization expense |  | 71 | 81 | 141 | 153
Interest income |  | 33 | 13 | 60 | 26
Interest expense |  | $ 2 | $ 3 | $ 4 | $ 5
[1] | Unallocated corporate expenses are general corporate overhead expenses not directly attributable to any one of the business 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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