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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands | Nov. 30, 2016 | Aug. 31, 2016
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CONSOLIDATED BALANCE SHEETS [Abstract] |  |
Receivables, allowance for doubtful account | $ 7 | $ 7
Other non-current assets, fair value of derivative instruments | 4,163 | 3,224
Other accrued expenses, fair value of foreign currency forward contracts | 153 | 110
Other long-term liabilities, fair value of derivative instruments | 1,030 | 1,514
Other long-term liabilities, defined benefit plan | $ 4,394 | $ 4,013
Common stock, par value per share | $ 0.0001 | $ 0.0001
Common stock, shares authorized | 45,000,000 | 45,000,000
Common stock, shares issued | 31,242,784 | 31,237,658
Common stock, shares outstanding | 30,406,433 | 30,401,307
Treasury stock, shares | 836,351 | 836,351

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