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Income Taxes (Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
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Income Tax Disclosure [Abstract] |  |
Allowance for doubtful accounts | $ 1,150 | $ 1,007
Employee related accruals | 3,419 | 2,923
State taxes | 1,064 | 534
Workers’ compensation and medical malpractice loss reserves | 4,683 | 4,277
Prepaid insurance | (631) | (319)
Other | 462 | 849
Current | 10,147 | 9,271
Intangibles | (23,662) | (15,559)
Depreciation expense | (4,449) | (3,867)
Stock-based compensation | 2,852 | 3,428
Net operating loss carryforwards | 1,191 | 1,054
Other | 1,975 | 758
Deferred Tax Liabilities, Gross, Noncurrent | (22,093) | (14,186)
Valuation allowance | (916) | (670)
Total deferred income tax assets (liabilities) | $ (12,862) | $ (5,585)

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