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Segment Reporting - Sales By Geographic Regions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Aug. 31, 2017 | Aug. 31, 2016 | Aug. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenue, Net | $ 31,935 | $ 30,347 | $ 34,582
UNITED STATES |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Sales Revenue, Goods, Net | 24,600,000 | 23,200,000 | 27,700,000
North America |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Sales Revenue, Goods, Net | 24,634 | 23,276 | 27,821
South America |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Sales Revenue, Goods, Net | 1,441 | 1,847 | 1,529
Europe, the Middle East and Africa (EMEA) |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Sales Revenue, Goods, Net | 4,985 | 4,166 | 4,221
Asia Pacific (APAC) |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Sales Revenue, Goods, Net | $ 875 | $ 1,058 | $ 1,011

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