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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands | Feb. 29, 2020 | Aug. 31, 2019
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CONSOLIDATED BALANCE SHEETS [Abstract] |  |
Receivables, net of allowance for doubtful accounts | $ 125 | $ 144
Prepaid expenses and other current assets, fair value of derivative instruments | 0 | 2,736
Other non-current assets, fair value of derivative instruments | 241 | 0
Other accrued expenses, fair value of derivative instruments | 45 | 0
Other long-term liabilities, fair value of derivative instruments | 3,920 | 2,910
Other long-term liabilities, post-employment plans | $ 5,828 | $ 5,421
Common stock, par value per share | $ 0.0001 | $ 0.0001
Common stock, shares authorized | 45,000,000 | 45,000,000
Common stock, shares issued | 31,450,817 | 31,461,359
Common stock, shares outstanding | 30,599,058 | 30,538,788
Treasury stock, shares | 851,759 | 924,332

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