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Business Segments and Foreign Operations (Summarized Information By Reportable Segments) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
May 31, 2019 USD ($) | May 31, 2018 USD ($) | May 31, 2019 USD ($) item | May 31, 2018 USD ($)
Segment Reporting Information [Line Items] |  |  |  |  |
Number of reportable segments | item |  |  |  | 3 |
Net sales |  | $ 113,989 | $ 107,025 | $ 316,606 | $ 305,878
Income from operations |  | 23,202 | 22,329 | 59,318 | 58,833
Depreciation and amortization expense |  | 1,885 | 1,963 | 5,710 | 5,849
Interest income |  | 27 | 107 | 123 | 371
Interest expense |  | 567 | 1,205 | 1,962 | 3,048
Unallocated Corporate [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Income from operations | [1] | (6,486) | (6,243) | (19,553) | (19,274)
Depreciation and amortization expense | [1] | 63 | 198 | 168 | 586
Americas Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 52,966 | 52,999 | 144,654 | 144,129
Income from operations |  | 15,418 | 15,709 | 36,712 | 37,075
Depreciation and amortization expense |  | 1,137 | 999 | 3,400 | 3,139
Interest income |  | 6 |  | 22 | 1
Interest expense |  | 399 | 1,202 | 1,727 | 3,040
EMEA Segments [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 44,548 | 39,571 | 124,259 | 114,231
Income from operations |  | 9,918 | 9,565 | 28,923 | 27,933
Depreciation and amortization expense |  | 614 | 685 | 1,930 | 1,890
Interest income |  | 1 | 34 | 21 | 271
Interest expense |  | 167 |  | 230 |
Asia-Pacific Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales |  | 16,475 | 14,455 | 47,693 | 47,518
Income from operations |  | 4,352 | 3,298 | 13,236 | 13,099
Depreciation and amortization expense |  | 71 | 81 | 212 | 234
Interest income |  | 20 | 73 | 80 | 99
Interest expense |  | $ 1 | $ 3 | $ 5 | $ 8
[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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