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Accrued Professional Liability (Narrative) (Detail) (USD $) | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
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Malpractice Loss Contingency [Line Items] |  |  |  |
Total accrued professional liability | $ 137,036,000 | $ 122,847,000 | $ 111,662,000 | $ 109,628,000
Accrued professional liability incurred but loss reserves not reported for claims | 90,600,000 | 79,500,000 |  |
Accrued professional liability incurred and loss reserves reported for claims | $ 46,400,000 | $ 43,300,000 |  |

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- Definition Accrued professional liability. + References No definition available. + Details
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- Details
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- Definition Amount of the accrued liability on an undiscounted basis for malpractice claims (including general and professional liability) at the end of the accounting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 AICPA -Name Audit and Accounting Guide (AAG) -Number AAG-HCO -Paragraph 11, 13 -IssueDate 2006-05-01 -Chapter 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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- Definition Carrying amount of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property that are expected to be paid within one year (or the normal operating cycle, if longer). + References No definition available. + Details
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