Income Taxes	6 Months Ended
Jun. 30, 2011
Income Taxes
Income Taxes	11. INCOME TAXES The effective income tax rate was 36.6% for the three months ended June 30, 2011 compared to 36.5% for the three months ended June 30, 2010. For the six months ended June 30, 2011, the effective tax rate was 36.6% compared to 37.1% for the six months ended June 30, 2010. The higher tax rate for the six months ended June 30, 2010 primarily was due to the cumulative adjustment associated with estimating the retrospective aspect of new limitations on the deductibility of annual compensation in excess of $500,000 per employee as mandated by the March 2010 health insurance reforms.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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
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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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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+ Details