SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	9 Months Ended
Sep. 30, 2011
Summary of Significant Accounting Policies [Abstract]
Summary of significant accounting policies	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The interim consolidated financial statements reflect all adjustments which in the opinion of management are necessary for a fair statement of financial condition, results of operations, and cash flows for the periods presented. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. The interim consolidated financial statements have been compiled without audit. Operating results for the interim periods are not necessarily indicative of the results that may be expected for the full year. These interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company's 2010 Annual Report on Form 10-K. The year-end balance sheet data was derived from the audited financial statements as of December 31, 2010, but does not include all the disclosures required by accounting principles generally accepted in the United States ("GAAP"). Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Earnings Per Share The Company's unvested restricted common stock and unvested restricted stock units that contain non-forfeitable rights to dividends are participating securities and, therefore, are included in the earnings allocation in computing earnings per share using the two-class method. Basic earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding. Diluted earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding after giving effect to all potentially dilutive common shares outstanding during the period. Potentially dilutive common shares include the dilutive effect of outstanding stock options and performance share units granted under the Company's Amended and Restated Employee Long-Term Incentive Plan and its Amended and Restated Non-Employee Director Long-Term Incentive Plan. Earnings allocable to participating securities include the portion of dividends declared as well as the portion of undistributed earnings during the period allocable to participating securities. Adoption of New Accounting Standards On January 1, 2011, the Company adopted revised guidance issued by the Financial Accounting Standards Board ("FASB") related to the accounting for revenue in certain revenue arrangements that include software elements and in arrangements with multiple deliverables. The adoption of these standards did not have a material impact on the Company's consolidated financial statements. On January 1, 2011, the Company adopted a new accounting standard related to the disclosures about the Company's use of fair value measurements relating to the tabular reconciliation of beginning and ending balances of the Level 3 (fair value determined based on significant unobservable inputs) classification and that provides greater disaggregation for each class of assets and liabilities that use fair value measurements. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. On January 1, 2011, the Company adopted a new accounting standard related to the accounting for insurance claims and related insurance recoveries. This standard clarifies that a healthcare entity may not net insurance recoveries against related professional claim liabilities in its balance sheet and also requires that claim liabilities shall be determined without consideration of insurance recoveries. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. On January 1, 2011, the Company adopted a new accounting standard pertaining to disclosures of charity care provided by healthcare entities. Under this new standard, the measurement basis for charity care disclosures is the cost of performing the services. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. On January 1, 2011, the Company adopted a new accounting standard related to goodwill which (1) modifies step one of the goodwill impairment test by requiring entities with reporting units that have a zero or negative carrying value to assess whether it is more likely than not that a goodwill impairment exists and (2) does not prescribe a specific method of calculating the carrying value of a reporting unit in the performance of step one of the goodwill impairment test. Under the requirements of this standard, if the entity concludes that it is more likely than not that an impairment of goodwill exists, the entity must perform step two of the goodwill impairment test. In determining whether it is more likely than not that an impairment of goodwill exists, an entity should consider whether there are any adverse qualitative factors indicating that an impairment exists. The adoption of this standard did not have a material impact on the Company's consolidated financial statements. New Accounting Standards In May 2011, the FASB issued an amendment to the accounting standards related to fair value measurements and disclosure requirements that result in a consistent definition of fair value and common requirements for the measurement and disclosure of fair value between GAAP and International Financial Reporting Standards. This standard provides certain amendments to the existing guidance on the use and application of fair value measurements and maintains a definition of fair value that is based on the notion of exit price. This standard will become effective for the Company on January 1, 2012 and is not expected to have a material impact on the Company's consolidated financial statements. In June 2011, the FASB issued an amendment to the accounting standards related to the presentation of comprehensive income. This standard revises the manner in which entities present comprehensive income in their financial statements and removes the option to present items of other comprehensive income in the statement of changes in stockholders' equity. This standard requires an entity to report components of comprehensive income in either (1) a continuous statement of comprehensive income or (2) two separate but consecutive statements of net income and other comprehensive income. This standard will become effective retrospectively for the Company on January 1, 2012. In September 2011, the FASB issued an amendment to the accounting standards related to the testing of goodwill for impairment. Under the revised guidance, an entity has the option to perform a qualitative assessment of whether it is more-likely-than-not that a reporting unit's fair value is less than its carrying value prior to performing the two-step quantitative goodwill impairment test. If, based on the qualitative factors, an entity determines that the fair value of the reporting unit is greater than its carrying amount, then the entity would not be required to perform the two-step quantitative impairment test for that reporting unit. However, if the qualitative assessment indicates that it is not more-likely-than-not that the reporting unit's fair value exceeds its carrying value, then the quantitative assessment must be performed. An entity is permitted to perform the qualitative assessment on none, some or all of its reporting units and may also elect to bypass the qualitative assessment and begin with the quantitative assessment of goodwill impairment. This amendment is effective for the Company for annual and interim goodwill impairment tests performed on or after January 1, 2012 and is not expected to have a material impact on the Company's consolidated financial statements.

Basis of Presentation

The interim consolidated financial statements reflect all adjustments which in the opinion of management are necessary for a fair statement of financial condition, results of operations, and cash flows for the periods presented. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. The interim consolidated financial statements have been compiled without audit. Operating results for the interim periods are not necessarily indicative of the results that may be expected for the full year. These interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements included in the Company's 2010 Annual Report on Form 10-K.

The year-end balance sheet data was derived from the audited financial statements as of December 31, 2010, but does not include all the disclosures required by accounting principles generally accepted in the United States ("GAAP").

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

The Company's unvested restricted common stock and unvested restricted stock units that contain non-forfeitable rights to dividends are participating securities and, therefore, are included in the earnings allocation in computing earnings per share using the two-class method. Basic earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding. Diluted earnings per common share is calculated by dividing net income, adjusted for earnings allocated to participating securities, by the weighted average number of common shares outstanding after giving effect to all potentially dilutive common shares outstanding during the period. Potentially dilutive common shares include the dilutive effect of outstanding stock options and performance share units granted under the Company's Amended and Restated Employee Long-Term Incentive Plan and its Amended and Restated Non-Employee Director Long-Term Incentive Plan. Earnings allocable to participating securities include the portion of dividends declared as well as the portion of undistributed earnings during the period allocable to participating securities.

Adoption of New Accounting Standards

On January 1, 2011, the Company adopted revised guidance issued by the Financial Accounting Standards Board ("FASB") related to the accounting for revenue in certain revenue arrangements that include software elements and in arrangements with multiple deliverables. The adoption of these standards did not have a material impact on the Company's consolidated financial statements.

On January 1, 2011, the Company adopted a new accounting standard related to the disclosures about the Company's use of fair value measurements relating to the tabular reconciliation of beginning and ending balances of the Level 3 (fair value determined based on significant unobservable inputs) classification and that provides greater disaggregation for each class of assets and liabilities that use fair value measurements. The adoption of this standard did not have a material impact on the Company's consolidated financial statements.

On January 1, 2011, the Company adopted a new accounting standard related to the accounting for insurance claims and related insurance recoveries. This standard clarifies that a healthcare entity may not net insurance recoveries against related professional claim liabilities in its balance sheet and also requires that claim liabilities shall be determined without consideration of insurance recoveries. The adoption of this standard did not have a material impact on the Company's consolidated financial statements.

On January 1, 2011, the Company adopted a new accounting standard pertaining to disclosures of charity care provided by healthcare entities. Under this new standard, the measurement basis for charity care disclosures is the cost of performing the services. The adoption of this standard did not have a material impact on the Company's consolidated financial statements.

On January 1, 2011, the Company adopted a new accounting standard related to goodwill which (1) modifies step one of the goodwill impairment test by requiring entities with reporting units that have a zero or negative carrying value to assess whether it is more likely than not that a goodwill impairment exists and (2) does not prescribe a specific method of calculating the carrying value of a reporting unit in the performance of step one of the goodwill impairment test. Under the requirements of this standard, if the entity concludes that it is more likely than not that an impairment of goodwill exists, the entity must perform step two of the goodwill impairment test. In determining whether it is more likely than not that an impairment of goodwill exists, an entity should consider whether there are any adverse qualitative factors indicating that an impairment exists. The adoption of this standard did not have a material impact on the Company's consolidated financial statements.

New Accounting Standards

In May 2011, the FASB issued an amendment to the accounting standards related to fair value measurements and disclosure requirements that result in a consistent definition of fair value and common requirements for the measurement and disclosure of fair value between GAAP and International Financial Reporting Standards. This standard provides certain amendments to the existing guidance on the use and application of fair value measurements and maintains a definition of fair value that is based on the notion of exit price. This standard will become effective for the Company on January 1, 2012 and is not expected to have a material impact on the Company's consolidated financial statements.

In June 2011, the FASB issued an amendment to the accounting standards related to the presentation of comprehensive income. This standard revises the manner in which entities present comprehensive income in their financial statements and removes the option to present items of other comprehensive income in the statement of changes in stockholders' equity. This standard requires an entity to report components of comprehensive income in either (1) a continuous statement of comprehensive income or (2) two separate but consecutive statements of net income and other comprehensive income. This standard will become effective retrospectively for the Company on January 1, 2012.

In September 2011, the FASB issued an amendment to the accounting standards related to the testing of goodwill for impairment. Under the revised guidance, an entity has the option to perform a qualitative assessment of whether it is more-likely-than-not that a reporting unit's fair value is less than its carrying value prior to performing the two-step quantitative goodwill impairment test. If, based on the qualitative factors, an entity determines that the fair value of the reporting unit is greater than its carrying amount, then the entity would not be required to perform the two-step quantitative impairment test for that reporting unit. However, if the qualitative assessment indicates that it is not more-likely-than-not that the reporting unit's fair value exceeds its carrying value, then the quantitative assessment must be performed. An entity is permitted to perform the qualitative assessment on none, some or all of its reporting units and may also elect to bypass the qualitative assessment and begin with the quantitative assessment of goodwill impairment. This amendment is effective for the Company for annual and interim goodwill impairment tests performed on or after January 1, 2012 and is not expected to have a material impact on the Company's consolidated financial statements.