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or Infrequent Item, or Both [Line Items] Unusual or Infrequent Item, or Both [Line Items] Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Other expense: Nonoperating Income (Expense) [Abstract] Credit Facility [Axis] Credit Facility [Axis] Indefinite-lived Intangible Assets [Line Items] Indefinite-lived Intangible Assets [Line Items] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Change in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Less: accumulated depreciation Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Cash flows from operating activities: Net Cash Provided by (Used in) Operating Activities [Abstract] Vested (in dollars per share) Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value General and administrative expense General and Administrative Expense [Member] Consolidation Consolidation, Policy [Policy Text Block] Expected life Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Total current liabilities Liabilities, Current Cash payments for business acquisitions, net of escrow Aggregate purchase price Payments to Acquire Businesses, Gross Accrued Wages and Related Liabilities Accrued Wages and Related Liabilities [Member] Accrued Wages and Related Liabilities Borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Segment Reporting Information [Line Items] Segment Reporting Information [Line Items] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Title of 12(b) Security Title of 12(b) Security Statement [Table] Statement [Table] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Total unrecognized share-based compensation expense Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Cost of services Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization Statistical Measurement [Axis] Statistical Measurement [Axis] Cover [Abstract] Transition Services Costs Transition Services Costs [Member] Transition Services Costs Goodwill Goodwill, beginning balance Goodwill, ending balance Goodwill Revenue and accounts receivable Revenue from Contract with Customer And Accounts Receivables Disclosure [Text Block] Revenue from Contract with Customer And Accounts Receivables Disclosure [Text Block] Workers' compensation, retention limit Workers' Compensation Insurance, Retention Limit, Per Claim Workers' Compensation Insurance, Retention Limit, Per Claim Noncontrolling interest Stockholders' Equity Attributable to Noncontrolling Interest Number of operating facilities Number of Real Estate Properties Cost of services Cost of Sales [Member] Private and other Private And Other [Member] Private And Other [Member] Other expense Other Nonoperating Expense Activity in goodwill by segment Schedule of Goodwill [Table Text Block] Description of business Nature of Operations [Text Block] Adjustments to reconcile net income to net cash (used in) provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Operating lease costs Operating Lease, Cost Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Related party transactions Related Party Transactions Disclosure [Text Block] Other expense Other Expenses