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Stock-Based Compensation (Tables)
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9 Months Ended | |||||||||||||||||||||||||
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Feb. 28, 2014
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Non-Qualified Stock Options
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| Assumptions to Value Stock Options | The following assumptions were used to value these stock options:
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Market-Based Restricted Common Shares
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| Assumptions to Value Stock Options | The following assumptions were used to determine the grant-date fair value and the derived service period for these restricted common shares:
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