00100 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 00200 - Statement - Condensed Consolidated Statements of Income link:presentationLink link:calculationLink link:definitionLink 00400 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 40302 - Disclosure - Acquisitions (Schedule of Purchase Price Allocation) (Details) link:presentationLink link:calculationLink link:definitionLink 40502 - Disclosure - Details of Certain Balance Sheet Accounts (Schedule of Prepaid Expenses and Other Current Assets) (Details) link:presentationLink link:calculationLink link:definitionLink 40503 - Disclosure - Details of Certain Balance Sheet Accounts (Schedule of Accrued Expenses) (Details) link:presentationLink link:calculationLink link:definitionLink 40602 - Disclosure - Long-Term Debt (Schedule of Long-Term Debt) (Details) link:presentationLink link:calculationLink link:definitionLink 40603 - Disclosure - Long-Term Debt (Schedule of Leased Property Under Capital Leases) (Details) link:presentationLink link:calculationLink link:definitionLink 40604 - Disclosure - Long-Term Debt (Schedule of Future Minimum Payments for Capital Leases) (Details) link:presentationLink link:calculationLink link:definitionLink 40702 - Disclosure - Income Taxes (Reconciliation of Statutory Federal Tax Rate) (Details) link:presentationLink link:calculationLink link:definitionLink 00090 - Document - Document And Entity Information link:presentationLink link:calculationLink link:definitionLink 00105 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 00300 - Statement - Condensed Consolidated Statement of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Gain on Sale of Assets link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Acquisitions link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Goodwill and Intangible Assets link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Details of Certain Balance Sheet Accounts link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Long-Term Debt link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Income Taxes link:presentationLink link:calculationLink link:definitionLink 10801 - Disclosure - Commitments and Contingencies link:presentationLink link:calculationLink link:definitionLink 10901 - Disclosure - Severance and Restructuring link:presentationLink link:calculationLink link:definitionLink 11001 - Disclosure - Significant Payors link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - Concentration of Cash link:presentationLink link:calculationLink link:definitionLink 11201 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 20102 - Disclosure - Summary of Significant Accounting Policies (Policy) link:presentationLink link:calculationLink link:definitionLink 30103 - Disclosure - Summary of Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 30303 - Disclosure - Acquisitions (Tables) link:presentationLink link:calculationLink link:definitionLink 30403 - Disclosure - Goodwill and Intangible Assets (Tables) link:presentationLink link:calculationLink link:definitionLink 30503 - Disclosure - Details of Certain Balance Sheet Accounts (Tables) link:presentationLink link:calculationLink link:definitionLink 30603 - Disclosure - Long-Term Debt (Tables) link:presentationLink link:calculationLink link:definitionLink 30703 - Disclosure - Income Taxes (Tables) link:presentationLink link:calculationLink link:definitionLink 30903 - Disclosure - Severance and Restructuring (Tables) link:presentationLink link:calculationLink link:definitionLink 31003 - Disclosure - Significant Payors (Tables) link:presentationLink link:calculationLink link:definitionLink 40101 - Disclosure - Summary of Significant Accounting Policies (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40102 - Disclosure - Summary of Significant Accounting Policies (Estimated Useful Lives of Property and Equipment) (Details) link:presentationLink link:calculationLink link:definitionLink 40201 - Disclosure - Gain on Sale of Assets (Details) link:presentationLink link:calculationLink link:definitionLink 40301 - Disclosure - Acquisitions (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40303 - Disclosure - Acquisitions (Unaudited Pro Forma Condensed Consolidated Income Statement Information) (Details) link:presentationLink link:calculationLink link:definitionLink 40401 - Disclosure - Goodwill and Intangible Assets (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40402 - Disclosure - Goodwill and Intangible Assets (Summary of Goodwill and Related Adjustments) (Details) link:presentationLink link:calculationLink link:definitionLink 40403 - Disclosure - Goodwill and Intangible Assets (Schedule of Carrying Amount and Accumulated Amortization of Intangible Asset) (Details) link:presentationLink link:calculationLink link:definitionLink 40601 - Disclosure - Long-Term Debt (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40701 - Disclosure - Income Taxes (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40801 - Disclosure - Commitments and Contingencies (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40901 - Disclosure - Severance and Restructuring (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 40902 - Disclosure - Severance and Restructuring (Components of and Changes in Severance and Restructuring Accruals) (Details) link:presentationLink link:calculationLink link:definitionLink 41001 - Disclosure - Significant Payors (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 41002 - Disclosure - Significant Payors (Revenue Mix by Payor Type) (Details) link:presentationLink link:calculationLink link:definitionLink 41003 - Disclosure - Significant Payors (Percentage of Total Revenue by Geographic Location) (Details) link:presentationLink link:calculationLink link:definitionLink 41201 - Disclosure - Subsequent Events (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink