Self-Insurance

12 Months Ended

Dec. 31, 2011

Self-Insurance [Abstract]

Self-Insurance

13.       Self-Insurance

The Company obtains various insurance coverages from commercial carriers at stated amounts as defined in the applicable policy. Losses related to deductible amounts are accrued based on the Company’s estimate of expected losses plus incurred but not reported claims. As of December 31, 2011 and 2010, the Company accrued $72.8 million and $62.4 million, respectively, for the self-insured portions of these programs, of which $37.7 million and $29.2 million is classified as long-term as of December 31, 2011 and 2010, respectively.

The Company has secured self-insured retention risk under workers’ compensation and general liability and professional liability programs with cash aggregating $17.3 million and $18.0 million as of December 31, 2011 and 2010, respectively, and letters of credit aggregating $40.7 million and $33.7 million as of December 31, 2011 and 2010, respectively.