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Net income attributable to common stockholders - Basic and Diluted - Diluted Net Income (Loss) Available to Common Stockholders, Diluted Other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other Other Services Other Services [Member] Other Services [Member] Net income per share attributable to common stockholders - Diluted (in dollars per share) Earnings Per Share, Diluted Accrued compensation and benefits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Compensation And Benefits Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Accrued Compensation And Benefits Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Equity compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Total current liabilities Liabilities, Current 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Other current assets Other Assets, Current Restructuring Cost and Reserve [Line Items] Restructuring Cost and Reserve [Line Items] Share Repurchase Program [Axis] Share Repurchase Program [Axis] Schedule of Allowance for Doubtful Accounts Accounts Receivable, Allowance for Credit Loss [Table Text Block] Other expenses (income): Nonoperating Income (Expense) [Abstract] Omnibus Plan Omnibus Plan [Member] Omnibus Plan Schedule of Operating Lease Maturity Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Income Tax Authority [Domain] Income Tax Authority [Domain] Other Proceeds from (Payments for) Other Financing Activities Product and Service [Axis] Product and Service [Axis] Net working capital adjustment Business Combination, Consideration Transferred, Net Working Capital Adjustment Business Combination, Consideration Transferred, Net Working Capital Adjustment Unbilled contracts receivable Unbilled Contracts Receivable Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Borrowing availability Line of Credit Facility, Remaining Borrowing Capacity Interest expense Interest Expense Trade names Trade Names [Member] Credit Facility [Axis] Credit Facility [Axis] Acquisition and integration-related costs Acquisition and integration-related costs Acquisition And Integration-Related Costs Acquisition and integration-related costs include costs for prior acquisitions, costs incurred for potential transactions, and accretion and valuation adjustments on contingent consideration liabilities Schedule of Long-term Debt Schedule of Long-Term Debt Instruments [Table Text Block] Equity [Abstract] Equity [Abstract] Borrowing base, percentage of assets Line Of Credit, Borrowing Base, Percentage Of Assets Line Of Credit, Borrowing Base, Percentage Of Assets Vested (in shares) Vested (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Entity Tax Identification Number Entity Tax Identification Number Restructuring Costs Costs Associated with Exit or Disposal Activities or Restructurings, Policy [Policy Text Block] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table Text Block] Revenue from Contract with Customer [Abstract] Revenue from Contract with Customer [Abstract] 2022 Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Non-compete agreements Noncompete Agreements [Member] Health Care System Affiliated with a Board Member Health Care System Affiliated With A Board Member [Member] Health Care System Affiliated With A Board Member Change in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Schedule of Restructuring and Related Costs Restructuring and Related Costs [Table Text Block] Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Principal payments on term loan Repayments of Secured Debt Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] New Repurchase Program New Repurchase Program [Member] New Repurchase Program City Area Code City Area Code Assets Assets [Abstract] Impairment of intangible assets (excluding goodwill) Impairment of Intangible Assets (Excluding Goodwill) Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Cash flows from financing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Asset Class [Axis] Asset Class [Axis] 2023 Long-Term Debt, Maturity, Year One Equity compensation Share-Based Payment Arrangement, Noncash Expense Variable Rate [Axis] Variable Rate [Axis] Other long-term liabilities Other Liabilities, Noncurrent Disposal Group Classification [Domain] Disposal Group Classification [Domain] Other Increase (Decrease) in Other Operating Liabilities Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Impairment charges Impairment charges Impairment charges Asset Impairment Charges Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] 2021 Term Loan Credit Agreement 2021 Term Loan Credit Agreement [Member] 2021 Term Loan Credit Agreement 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One Schedule of Components of Numerator and Denominator for Computation of Basic and Diluted Earnings per Share Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Right-of-use assets acquired under operating lease Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Fair Value, Option, Quantitative Disclosures [Line Items] Fair Value, Option, Quantitative Disclosures [Line Items] Service [Member]