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Balance Sheet Components - Inventories (Details) - USD ($)
$ in Thousands
12 Months Ended
Aug. 31, 2016
Aug. 31, 2015
Balance Sheet Components    
Raw materials $ 1,400 $ 1,857
Work in process 700 793
Finished goods 1,967 3,274
Total 4,067 5,924
Inventory write-downs $ 1,542 $ 1,400