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Capital Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
--- | ---
Nov. 30, 2017 | Nov. 30, 2016
Earnings Per Share [Abstract] |  |
Net earnings | $ 5,226 | $ 4,965
Weighted average common shares outstanding - basic | 59,871 | 58,972
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities | 738 | 644
Diluted | 60,609 | 59,616
Basic | $ 0.09 | $ 0.08
Diluted | $ 0.09 | $ 0.08
Anti-dilutive securities from stock based compensation plans (excluded from earnings per share calculation) | 1,829 | 1,963

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