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Income Taxes (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 31, 2016 | Aug. 31, 2015
Income Taxes |  |
Statutory income tax rate in Taiwan (as a percent) | 17.00% |
Additional Taiwan corporate income tax rate (as a percent) | 10.00% |
Surtax rate (as a percent) | 10.00% |
Loss before income taxes |  |
U.S. operations | $ (973) | $ (770)
Foreign operations | (20,331) | (12,547)
Loss before income taxes | (21,304) | (13,317)
Unrecognized tax benefits | $ 0 | $ 0
Reconciliation of income tax expense |  |
U.S. federal income tax rate (as a percent) | 34.00% | 34.00%
Computed "expected" income tax benefit | $ (7,243) | $ (4,528)
Foreign tax rate differential | 2,078 | 1,432
Valuation allowance | 5,097 | 3,125
Other | 68 | (28)
Total income tax expense |  | 1
Deferred tax assets: |  |
Inventories, primarily due to inventory obsolescence and lower of cost or market provisions | 1,659 | 1,346
Allowance for doubtful accounts | 155 | 428
Accruals and other | 196 | 123
Property, plant and equipment | 4,126 | 2,627
Stock-based compensation | 609 | 617
Investments in unconsolidated entities | 5,560 | 5,587
Net operating loss carryforwards | 21,396 | 19,086
Net operating loss carryforwards-undistributed earnings tax | 9,679 | 7,662
Total gross deferred tax assets | 43,380 | 37,476
Less: Valuation allowance | $ (43,380) | $ (37,476)

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