STOCK-BASED COMPENSATION

3 Months Ended

Mar. 31, 2012

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

The following table summarizes the total number and type of awards granted during the three-month period ended March 31, 2012, as well as the related weighted-average grant-date fair values:



	Shares	Weighted Average Grant-Date Fair Value
Restricted stock awards	47,507	$	67.33
Performance stock awards	68,719	$	67.33
Total awards	116,226

Certain performance stock awards granted in March 2012 are subject to achieving three performance goals including predetermined revenue, EBITDA and total reportable incident rate targets for a specified period of time as well as service conditions. As of March 31, 2012, based on year-to-date results of operations, management has not determined that it is probable that the performance targets for the 2012 performance awards will be achieved by December 31, 2013. As a result, the Company recognized no expense during the three months ended March 31, 2012 related to the 2012 performance stock awards.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 93-6

-Paragraph 53

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

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Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ Details