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Earnings (Loss) Per Share (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended		42 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2014
Earnings Per Share [Abstract]
Undistributed Earnings Allocated to Participating Securities	$ 0.1	$ 0.1
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 13.4		$ 13.4

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- Definition

Amount remaining of a stock repurchase plan authorized by an entity's Board of Directors.

+ References

No definition available.

+ Details

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- Definition

Earnings allocated (not distributed) to participating securities under the two-class method to the extent that participating securities may share in earnings as if all of the earnings for the period had been distributed.

+ References

No definition available.

+ Details

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