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Balance Sheet Components (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 30, 2012 | Aug. 31, 2012
Intangible Assets |  |
Gross Carrying Amount | $ 2,162 | $ 2,089
Accumulated Amortization | 642 | 537
Total | 1,520 | 1,552
Patents and trademarks |  |
Intangible Assets |  |
Weighted Average Amortization Period | 17 years | 17 years
Gross Carrying Amount | 613 | 585
Accumulated Amortization | 160 | 146
Total | 453 | 439
Acquired technology |  |
Intangible Assets |  |
Weighted Average Amortization Period | 4 years | 4 years
Gross Carrying Amount | 172 | 167
Accumulated Amortization | 115 | 101
Total | 57 | 66
Customer relationships |  |
Intangible Assets |  |
Weighted Average Amortization Period | 5 years | 5 years
Gross Carrying Amount | 1,377 | 1,337
Accumulated Amortization | 367 | 290
Total | $ 1,010 | $ 1,047

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