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Treasury Stock | 6 Months Ended
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Nov. 30, 2013
Disclosure Text Block Supplement [Abstract] |
Treasury Stock [Text Block] | 12. Treasury Stock The Board of Directors has authorized the Company to repurchase Common Stock, from time to time as conditions allow, on the open market or through negotiated private transactions. The table below represents the remaining Board authorization:
Board Authorization |  | Amount |
September 2010 |  | $ | 44.0 |
Less repurchases made under this authorization |  |  | (30.6 | )
Remaining Board authorization at November 30, 2013 |  | $ | 13.4 |
The Company’s repurchase program may be suspended at any time without prior notice. There were $5.6 and $6.2 repurchases of Common Stock made during the three and six month periods ended November 30, 2013, respectively.

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- Definition The entire disclosure for treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References No definition available. + Details
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