Basis of Presentation Textuals Abstract.

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- Definition

The amount by which an original purchase price in a sale agreement is reduced due to a revised contract.

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- Definition

Amounts received from the disposal of the long-lived asset during or after the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 144
-Paragraph 33, 47

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- Definition

The number of shares issuable under a share-based award plan pertaining to grants made during the period on other than stock option plans (for example, phantom stock plan, stock appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(2)(c)

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- Definition

The difference between the maximum number of shares authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares already issued upon exercise of options or other share-based awards under the plan, and 2) shares reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

The quantity of shares issuable on stock options awarded under the plan during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(1)(d)

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Basis of Presentation (Details) (USD $) In Millions	1 Months Ended
Basis of Presentation (Details) (USD $) In Millions	Feb. 28, 2011	Jul. 21, 2011	May 31, 2011	May 17, 2011
Basis of Presentation (Textuals) [Abstract]
Proceeds to be Received for Sale of LTCHs - Revised		$ 117.5		$ 120.0
Reduction in Aggregate Purchase Price Per LTCH Sale Agreement		$ 2.5
Restricted stock awards granted	0.7
Stock options granted	0.2
Number of Shares of Common Stock Reserved for Grant - Amended and Restated 2008 Equity Incentive Plan			9.0