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9. Cancellation of Capital Stock (Details) - USD ($) | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Aug. 31, 2015 | May. 31, 2015 | Nov. 30, 2014 | Aug. 31, 2014 | May. 31, 2014 | Feb. 28, 2014 | May. 31, 2015 | Aug. 31, 2015
Details |  |  |  |  |  |  |  |
Payments for Repurchase of Common Stock | $ 54,491 | $ 1,101,574 | $ 1,292,477 | $ 454,050 | $ 3,234,699 | $ 569,019 |  |
Average price per share repurchased and cancelled | $ 11.41 |  | $ 10.86 | $ 10.08 | $ 9.89 | $ 9.78 | $ 12.37 |
Cumulative Effect on Retained Earnings, before Tax | $ 52,236 |  | $ 1,236,340 | $ 432,794 | $ 3,080,365 | $ 541,564 | $ 1,059,554 |
Shares returned to treasury for cancellation | 15,000 |  |  |  |  |  |  |
Shares returned to treasury for cancellation, value |  |  |  |  |  |  |  | $ 7,077

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