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Two Thousand Fourteen [Member] 2014 [Member] Accrued Employee Benefits, Current Accrued payroll and related benefits Two thousand twenty two to two thousand twenty three policy. 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Restricted Cash And Investment Policy [Text Block] Restricted cash and investments Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain (Loss), before Tax, Total Gross Unrealized (Losses) Gains Statement [Line Items] Statement [Line Items] Treasury Stock, Value, Acquired, Cost Method Company repurchases of common stock Entity Filer Category Entity Filer Category Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Remaining trade accounts receivable Remaining Trade Accounts Receivable Remaining trade accounts receivable. Liabilities and Equity Total liabilities and stockholders' equity Purchase of investments Payments to Acquire Marketable Securities Maximum amount to redeem retire repurchase or acquire stock upon agreement. Maximum Amount To Redeem Retire Repurchase Or Acquire Stock Upon Agreement Maximum amount to redeem retire repurchase or acquire stock upon agreement Credit agreement. Credit Agreement [Member] Agreement [Member] Deferred tax assets, valuation allowance Deferred Tax Assets, Valuation Allowance Subsequent Event [Line Items] Subsequent Event [Line Items] Wage Based Tax Credits [Member] Wage Based Tax Credits [Member] Wage based tax credits. Goodwill Goodwill Goodwill, Total Goodwill, Beginning Balance Goodwill, Ending Balance Workers compensation accrual for costs incurred in excess of retention limits offset by receivable. 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Two Thousand Twenty Four [Member] Investments Classified by Contractual Maturity Date [Table Text Block] Summary of Contractual Maturities of Available for Sale Securities Earnings Per Share, Basic Earnings Per Share, Basic, Total Basic loss per common share Cash flow information. Cash Flow Information Policy [Text Block] Statements of cash flows Maximum savings amount, if claims develop favorably. Maximum Savings Amount If Claims Develop Favorably Maximum savings amount for twelve month policy period, if claims develop favorably Number of wholly owned insurance companies. 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Accrued payroll, payroll taxes and related benefits Retained Earnings (Accumulated Deficit) Retained earnings Retained Earnings (Accumulated Deficit), Total Organization, Consolidation and Presentation of Financial Statements [Abstract] Payments of Dividends Dividends paid Payments of Dividends, Total Amendment Flag Amendment Flag Product and Service [Domain] Product and Service Loss Contingencies [Line Items] Loss Contingencies [Line Items] Earnings Per Share, Policy [Policy Text Block] Basic and diluted earnings per share Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Entity Address, Postal Zip Code Entity Address, Postal Zip Code Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash (used in) provided by operating activities Common Stock [Member] Common Stock [Member] Tax Credit Carryforward, Amount Tax credit carryforwards Secured Debt Term loan with principal bank Secured Debt, Total Debt Securities, Available-for-Sale [Line Items] Schedule Of Available For Sale Securities [Line Items] Portion at Fair Value Measurement [Member] Fair Value Disclosure Item Amounts [Default] Portion at Fair Value Measurement [Member] [Default] Entity Address, Address Line One Entity Address, Address Line One Fair Value Hierarchy and NAV [Axis] Level 2 [Member] Supranational Bonds [Member] Supranational Bonds [Member] Supranational bonds. Statement of Financial Position Location, Balance [Axis] Balance Sheet Location Investment Type [Axis] Investment Type Operating Lease, Right-of-Use Asset Operating lease right-of-use assets Debt Securities, Available-for-Sale, Unrealized Loss Position Total, Recorded Basis Total, Recorded Basis Increase (Decrease) in Income Taxes Income taxes Estimated tax due. Estimated Tax Due Estimated tax due Document Type Document Type Gross Profit Gross margin Cost of Revenue [Abstract] Cost of revenues: Entity Central Index Key Entity Central Index Key Entity Central Index Key Line of Credit Facility [Table] Line Of Credit Facility [Table] Summary of risk retained by insured program after considering loss portfolio transfers and current insurance arrangements. Summary Of Risk Retained By Insured Program After Considering Loss Portfolio Transfers And Current Insurance Arrangements Table [Text Block] Summary of Risk Retained by Insured Program after Considering Loss Portfolio Transfers and Current Insurance Arrangements Professional Employer Services [Member] Professional employer services. Revenue recognition PEO service contract minimum term. Revenue Recognition Peo Service Contract Minimum Term Revenue recognition professional employer service contracts term Restricted cash and investments. Restricted Cash And Investments [Member] Restricted Cash and Investments [Member] Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Net decrease in cash, cash equivalents and restricted cash Subsequent Event Type [Domain] Subsequent Event Type Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Potential common shares related to stock options, restricted stock units, performance share units, and employee stock purchase plan 2021-2022 Policy. Two Thousand Twenty One To Two Thousand Twenty Two Policy [Member] 2021-2022 Policy [Member] Common Stock, Par or Stated Value Per Share Common stock, par value Debt Securities, Available-for-Sale, Amortized Cost Cost Two Thousand Twenty Four To Two Thousand Twenty Five Policy [Member] Two thousand twenty four to two thousand twenty five policy. 2024-2025 Policy [Member] Workers' Compensation Liability, Current Workers' compensation claims liabilities Workers compensation liability, current Federal tax return years. Federal Tax Return Years Federal tax return years Debt Disclosure [Abstract] Marketable Securities Recorded Basis Marketable Securities, Total Emerging markets. Emerging Markets [Member] Emerging Markets [Member] Current Fiscal Year End Date Current Fiscal Year End Date Two Thousand Twenty Five To Two Thousand Twenty Six Policy [Member] Two thousand twenty five to two thousand twenty six policy. 2025-2026 Policy [Member] Legal Matters and Contingencies [Text Block] Litigation Document Quarterly Report Document Quarterly Report Restricted Cash and Cash Equivalents [Axis] CALIFORNIA California [Member] Entity Address, State or Province Entity Address, State or Province Increase (Decrease) in Other Accrued Liabilities Other accrued liabilities Comprehensive Income (Loss), Net of Tax, Attributable to Parent Comprehensive (loss) income Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Gross Unrealized Gains Incremental Common Shares Attributable to Dilutive Effect of Share-Based Payment Arrangements Effect of dilutive securities Geographical [Axis] Geographical Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Common stock repurchased on vesting of restricted stock units and performance awards, shares Standby letters of credit and a surety bond. Standby Letters Of Credit And Surety Bond Surety bonds and standby letters of credit The noncurrent portion of money or property received from customers that is to be returned upon satisfactory contract completion or as partial prepayment for goods or services to be provided in the future and Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer). Customer Deposits And Other Long Term Liabilities Customer deposits and other long-term liabilities Comprehensive Income, Policy [Policy Text Block] Comprehensive income (loss) Deferred Income Tax Assets, Net Deferred income taxes Proceeds from Sale and Maturity of Marketable Securities Proceeds from sales and maturities of investments Subsequent Event [Member] Subsequent Event [Member] Worker's compensation risk claim maximum Workers compensation claims coverage per occurrence. Workers Compensation Claims Coverage Per Occurrence Other Assets, Noncurrent Other assets Increase (Decrease) in Payroll Taxes Payable Increase (decrease) in payroll taxes payable. Payroll taxes payable MARYLAND Maryland [Member] AOCI Attributable to Parent [Member] Accumulated Other Comprehensive Loss [Member] Benefit Costs [Member] Benefit costs [Member] Benefit costs. 2018. Two Thousand Eighteen [Member] 2018 [Member] Cash and Cash Equivalents [Domain] Prohibition for purchase money financing on incurring additional indebtedness without the prior approval of the bank. Prohibition For Purchase Money Financing On Incurring Additional Indebtedness Without Prior Approval Of Bank Prohibition on incurring additional indebtedness without the prior approval of the Bank in purchase money financing Tangible net worth. Tangible Net Worth Tangible net worth amount Selling, General and Administrative Expense Selling, general and administrative expenses Selling, General and Administrative Expense, Total Debt Instrument, Maturity Date Maturity date Minimum [Member] Minimum [Member] Financial Instrument [Axis] Financial Instrument Assets, Current [Abstract] Current assets: Level 3 [Member] Fair Value, Inputs, Level 3 [Member] Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Summary of Assets Measured at Fair Value on Recurring Basis Line Of Credit Facility Commitment Fee Reduced Percentage During Period Line of credit facility commitment fee reduced percentage during period. Percentage of reduced unused commitment fee on unused amount during period Liabilities, Current [Abstract] Current liabilities: 2018. Two Thousand Nineteen [Member] 2019 [Member] Shares, Outstanding Ending Balance, shares Beginning Balance, shares Summary of Fair Values and Gross Unrealized Losses of Available for Sale Securities Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] Accounts Receivable, after Allowance for Credit Loss, Current Trade accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current, Total Workers compensation claims maximum coverage per occurrence. Workers Compensation Claims Maximum Coverage Per Occurrence Worker's compensation risk claim maximum Restricted Cash and Cash Equivalent Restricted Cash and Cash Equivalents, Total Restricted cash, included in restricted cash and investments Commitments and Contingencies Commitments and contingencies (Notes 4 and 6) Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid Total claim payments Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Common stock issued on exercise of options, purchase of ESPP shares and vesting of restricted stock units and performance awards, shares Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture, Total Debt Instrument, Basis Spread on Variable Rate SOFR plus rate Forecast [Member] Scenario Forecast [Member] Payments to Acquire Restricted Investments Purchase of restricted investments Payments to Acquire Restricted Investments, Total Text Block [Abstract] Loss Contingencies [Table] Loss Contingencies [Table] Weighted Average Number of Shares Outstanding, Basic Weighted average number of basic common shares outstanding Weighted average number of basic shares outstanding Weighted Average Number of Shares Outstanding, Basic, Total Accrued Payroll Taxes, Current Payroll taxes payable Scenario [Axis] Short-Duration Insurance Contracts, Claim Duration [Axis] Short-Duration Insurance Contracts, Claim Duration Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 12 months or longer, Gross Unrealized Losses 12 months or longer, Gross Unrealized Losses 2021 - July 1 and after. Two Thousand Twenty One July One And After [Member] 2021 - July 1 and After [Member] Deferred income tax expense benefit including other comprehensive income tax adjustments Deferred income tax expense benefit including other comprehensive income tax. Deferred income taxes Subsequent Events [Text Block] Subsequent Events Income Tax Examination, Year under Examination Ongoing audit for tax years APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Share-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition, Total Debt Instrument, Interest Rate Terms Term loan from bank interest rate description Liability for Unpaid Claims and Claims Adjustment Expense, Adjustments Workers' compensation claims liabilities, Beginning balance Workers' compensation claims liabilities, Ending balance Variable Rate [Domain] Variable Rate Equity, Attributable to Parent Ending Balance Beginning Balance Total stockholders' equity Dividends and Interest Paid Dividends or distributions paid Statement of Stockholders' Equity [Abstract] Cost of Goods and Service [Policy Text Block] Cost of revenues Use of Estimates, Policy [Policy Text Block] Accounting estimates Credit Loss, Financial Instrument [Policy Text Block] Allowance for expected credit losses Entity Address, Address Line Two Entity Address, Address Line Two Fair Value Disclosures [Text Block] Fair Value Measurement Debt Instrument, Name [Domain] Debt Instrument, Name Two thousand twenty three to two thousand twenty four policy. Two Thousand Twenty Three To Two Thousand Twenty Four Policy [Member] 2023-2024 Policy [Member] Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items] Mutual Fund [Member] Mutual Funds [Member] 2016 [Member] 2016. Two Thousand Sixteen [Member] Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Available for sale securities, contractual maturities after 10 years Credit Facility [Axis] Credit Facility Cost of revenues Cost of Product and Service Sold Total cost of revenues Cost of Goods and Services Sold, Total Current premium payable Current premium payable Current premium payable Non-cash operating lease expense. Non Cash Operating Lease Expense Non-cash operating lease expense Increase (Decrease) in Accrued Salaries Accrued payroll and related benefits Workers compensation. Workers Compensation [Member] Workers' Compensation [Member] Entity Address, City or Town Entity Address, City or Town Collateral securities maintain to cover potential workers compensation claims losses. Collateral Securities Maintain To Cover Potential Workers Compensation Claims Losses Collateral securities maintain to cover potential workers compensation claims losses Security Exchange Name Security Exchange Name Credit Facility [Domain] Credit Facility Long-Term Debt, Gross Outstanding balance on term loan and revolving credit facility Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Loss before income taxes Accrued Liabilities [Member] Accrued Liabilities [Member] Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Total cash, cash equivalents and restricted cash shown in the statements of cash flows Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning Balance Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Ending Balance Measurement Basis [Axis] Measurement Basis Statistical Measurement Statistical Measurement [Domain] Restricted Cash and Investments, Current Restricted cash and investments Restricted Cash and Investments, Current, Total Assets, Current Total current assets Document Period End Date Document Period End Date Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV Line of Credit Facility, Commitment Fee Percentage Unused commitment fee on unused amount Insurance deposit as security for future payment obligations under workers compensation program. Insurance Deposit As Security For Future Payment Obligations Under Workers Compensation Program Balance in Chubb trust accounts Statement of Financial Position [Abstract] Revenue [Policy Text Block] Revenue recognition Line of Credit [Member] Line of Credit [Member] Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation [Abstract] Total liabilities Liabilities Self insured programs. Self Insured Programs [Member] Self Insured Programs [Member] Financial Instruments Financial Instruments [Domain] Proceeds from sales and maturities of restricted investments. Proceeds From Sales And Maturities Of Restricted Investments Proceeds from sales and maturities of restricted investments Claim payments. Claim Payments [Abstract] Less: claim payments related to Restricted Cash Restricted cash Restricted Cash, Total Variable Rate [Axis] Variable Rate Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Less than 12 months, Gross Unrealized Losses Less than 12 months, Gross Unrealized Losses Maximum additional premium charged amount, if claims develop adversely. Maximum Additional Premium Charged Amount If Claims Develop Adversely Maximum additional premiums charged amount for twelve month policy period, if claims develop adversely Weighted Average Number of Shares Outstanding, Diluted Weighted average number of diluted common shares outstanding Weighted average number of diluted shares outstanding Securities Act File Number Entity File Number Unrealized gain on investments, net of tax OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax Unrealized gain (loss) on investments, net of tax Unrealized (losses) gains on investments, net of tax of ($10) and $1,166 in 2026 and 2025, respectively Cover [Abstract] General Business Tax Credit Carryforward [Member] Federal General Business Tax Credit Carry Forward [Member] Prepaid Expense and Other Assets, Current Prepaid expenses and other Taxes Payable, Current Taxes Payable, Current, Total Income taxes payable Investments [Domain] Investments Workers' Compensation Liability, Noncurrent Long-term workers' compensation claims liabilities Scenario [Domain] US Treasury Securities [Member] U.S. Treasuries [Member] Number of Operating Segments Number of operating segment Change in claims incurred in excess of retention limits Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease) Liability for Unpaid Claims and Claims Adjustment Expense, Period Increase (Decrease), Total Mortgage-Backed Securities [Member] Collateralized Mortgage-Backed Securities [Member] Revenue from Contract with Customer, Including Assessed Tax Total revenues Standby Letters of Credit [Member] Standby Letters of Credit [Member] Subsequent Event [Table] Subsequent Event [Table] Long term premium payable Long-term premium payable Long term premium payable 2023 [Member] Two Thousand Twenty Three [Member] Two thousand twenty three. New Accounting Pronouncements, Policy [Policy Text Block] Recent accounting pronouncements One month term secured overnight financing rate. One Month Term Secured Overnight Financing Rate [Member] One-Month Term SOFR [Member] Basis of Presentation of Interim Period Statements [Line Items] Basis Of Presentation Of Interim Period Statements [Line Items] Basis Of Presentation Of Interim Period Statements [Line Items] Investment, Type [Extensible Enumeration] Common Stock, Shares, Outstanding Common stock, shares outstanding Common Stock, Shares, Outstanding, Beginning Balance Common Stock, Shares, Outstanding, Ending Balance Operating Lease, Liability, Current Current operating lease liabilities 2020. Two Thousand Twenty [Member] 2020 [Member] Document Transition Report Document Transition Report Investments Short-Term Investments Short-Term Investments, Total Payments for Repurchase of Common Stock Repurchases of common stock Deferred Tax Assets, Operating Loss Carryforwards, State and Local Operating loss carryforward Payment term for staffing customers. Payment Term For Staffing Customers Payment term for staffing customers Statement of Cash Flows [Abstract] Payroll Weekly Payment Term Payroll weekly payment term. Payroll weekly payment term Claims Risk Retained Claims risk retained. Claims risk retained Liability for Unpaid Claims and Claims Adjustment Expense, Claims Paid, Prior Years Prior periods Net Loss Net loss Income Tax Contingency [Line Items] Income Tax Contingency [Line Items] Income taxes receivable Income Taxes Receivable, Current Reinsurer, Name Reinsurer, Name [Axis] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Assets [Abstract] ASSETS Income Tax Authority, Name [Axis] Income Tax Authority, Name Increase (Decrease) in Prepaid Expense and Other Assets Prepaid expenses and other 2026 [Member] Two Thousand Twenty Six [Member] Two thousand twenty six member. Document Fiscal Year Focus Document Fiscal Year Focus Line of credit facility commitment fee percentage during period. Line Of Credit Facility Commitment Fee Percentage During Period Unused commitment fee on unused amount during period Other Assets [Member] Other Assets [Member] Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Cash flows from investing activities: Accounts Payable, Current Accounts payable Accounts Payable, Current, Total Interest Expense, Nonoperating Interest Expense, Nonoperating, Total Interest expense Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Common stock issued on exercise of options, purchase of ESPP shares and vesting of restricted stock units and performance awards Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total Debt Securities, Available-for-Sale, Unrealized Loss Position [Line Items] Proceeds from Stock Options Exercised Proceeds from exercise of stock options and purchase of ESPP shares Fair Value Disclosures [Abstract] Commitments and Contingencies Disclosure [Abstract] Claims expense accrual. 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Cash And Cash Equivalents Maximum Maturity Period Cash and cash equivalents, maturity term Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Cash flows from financing activities: Fair Value, Recurring [Member] Fair Value, Measurements, Recurring [Member] Entity Ex Transition Period Entity Ex Transition Period Equity Components [Axis] Equity Components Wage based tax credits claimed amount to be disallowed results estimated additional tax due. Wage Based Tax Credits Claimed Amount To Be Disallowed Results Estimated Additional Tax Due Wage based tax credits claimed amount to be disallowed results estimated additional tax due Workers' Compensation Claims Costs [Text Block] Workers' compensation claims costs. Workers' Compensation Claims Costs Nonoperating Income (Expense) Other income, net Equity Component [Domain] Equity Component Asset Class [Axis] Asset Class Customer deposits. Customer Deposits Policy [Text Block] Customer deposits Direct payroll costs. Direct Payroll Costs [Member] Direct Payroll Costs [Member] Depreciation, Depletion and Amortization, Nonproduction Depreciation and amortization Depreciation, Depletion and Amortization, Nonproduction, Total Statement of Comprehensive Income [Abstract] Earnings before interest taxes depreciation and amortization. Earnings Before Interest Taxes Depreciation And Amortization EBITDA Maximum [Member] Maximum [Member] Period for cancellation or termination of PEO service contract. Period For Cancellation Or Termination Of Peo Service Contract Professional employer service contract cancellation and termination period Statistical Measurement [Axis] Statistical Measurement Common Stock, Value, Issued Common stock, $.01 par value; 82,000 shares authorized, 24,556 and 25,179 shares issued and outstanding as of March 31,2026 and December 31, 2025, respectively Description of renewed agreement. Description Of Renewed Agreement Description of renewed agreement Income Tax Contingency [Table] Income Tax Contingency [Table] Income tax examination estimated penalty Wage based tax credits claimed amount to be disallowed tax years. Wage Based Tax Credits Claimed Amount To Be Disallowed Tax Years Wage-based tax credits claimed amount disallowed, tax years Tax Credit Carryforward [Axis] Tax Credit Carryforward Schedule of Weighted Average Number of Shares [Table Text Block] Summary of Basic and Diluted Common Shares Outstanding Adjusted Current period Current Year Claims and Claims Adjustment Expense Payment, Tax Withholding, Share-Based Payment Arrangement Common stock repurchased on vesting of restricted stock units and performance awards Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Total, Gross Unrealized Losses Total, Gross Unrealized Losses Payroll Taxes [Member] Payroll taxes. Payroll Taxes [Member] Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value Available for sale securities, contractual maturities, Total Entity Registrant Name Entity Registrant Name Reinsurance coverage per occurrence. Reinsurance Coverage Per Occurrence Reinsurance coverage Debt Disclosure [Text Block] Revolving Credit Facility Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Gross Unrealized Losses Company repurchases of common stock, shares Treasury Stock, Shares, Acquired Other Nonoperating Income (Expense) Other, net Other Nonoperating Income (Expense), Total Subsequent Events [Abstract] Income Tax Expense (Benefit) Income Tax Expense (Benefit), Total Provision for (benefit from) income taxes Measurement Frequency [Axis] Measurement Frequency Common Stock, Dividends, Per Share, Cash Paid Cash dividends on common stock per share Payments to Acquire Productive Assets Purchase of property, equipment and software Payments to Acquire Productive Assets, Total Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Short-Duration Insurance Contracts, Claim Duration [Domain] Short-Duration Insurance Contracts, Claim Duration Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Workers' compensation costs Compensation Related Costs, Policy [Policy Text Block] Accumulated Other Comprehensive Income (Loss), Net of Tax Accumulated Other Comprehensive Income (Loss), Net of Tax, Total Accumulated other comprehensive loss Restrictions on Cash and Cash Equivalents [Table Text Block] Schedule of Reconciles of Cash, Cash Equivalents and Restricted Cash Balances Assets Total assets Income Statement [Abstract] Increase (decrease) in operating lease liabilities. Increase Decrease In Operating Lease Liabilities Operating lease liabilities Insured program. Insured Program [Member] Insured Program [Member] Earnings Per Share, Diluted Earnings Per Share, Diluted, Total Diluted loss per common share City Area Code City Area Code Workers' Compensation Liability Workers' compensation claims liabilities, Ending balance Workers' compensation claims liabilities, Beginning balance Workers' compensation liability Workers compensation claims incurred but not reported in excess of retention limits. Workers Compensation Claims Incurred But Not Reported In Excess Of Retention Limits Reserves and IBNR in excess of retention limits incurred but not reported Line of Credit Facility, Maximum Borrowing Capacity Credit facility borrowing capacity 2017. Two Thousand Seventeen [Member] 2017 [Member] Investments current. Investments Current [Member] Marketable Securities Current [Member] Cash and Cash Equivalents, Policy [Policy Text Block] Cash and cash equivalents 2021 - through June 30. Two Thousand Twenty One Through June Thirty [Member] 2021 - Through June 30 [Member] Capital expenditures included in other accrued liabilities Capital Expenditures Included in Other Accrued Liabilities Capital expenditures included in other accrued liabilities. Property, equipment and software, net Property, Plant and Equipment, Net Property, Plant and Equipment, Net, Total Prior Year Claims and Claims Adjustment Expense Prior periods Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Cash, cash equivalents and restricted cash, end of period Cash, cash equivalents and restricted cash, beginning of period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total Corporate Bond Securities [Member] Corporate Bonds [Member] Operating Income (Loss) Loss from operations Retained Earnings [Member] Retained Earnings [Member] Entity Address, Country Entity Address, Country 2025 [Member] Two Thousand Twenty Five [Member] Two thousand twenty five. Share-Based Payment Arrangement, Noncash Expense Share-based compensation Share-Based Payment Arrangement, Noncash Expense, Total Income Tax Examination, Interest Expense Income tax related interest Share Repurchase Program, Authorized, Number of Shares Stock repurchased under repurchase plan Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Less than 12 months, Recorded Basis Operating Lease, Liability, Noncurrent Long-term operating lease liabilities Fair Value, Inputs, Level 1 [Member] Level 1 [Member] Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Net cash used in financing activities Safety incentives. Safety Incentives Policy [Text Block] Safety incentives Investments [Member] Investments [Member] Workers compensation claims. Workers Compensation Claims Policy [Text Block] Workers' compensation claims liabilities Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Available for sale securities, contractual maturities between 5 to 10 years Investments, Fair Value Disclosure Total Recorded Basis Investments, Fair Value Disclosure, Total Nonoperating Income (Expense) [Abstract] Other income (expense): Marketable Securities [Table Text Block] Summary of Investments Measured at Fair Value on Recurring Basis Reinsurer, Name [Domain] Trade and Other Accounts Receivable, Unbilled Receivables, Policy [Policy Text Block] Trade accounts receivable Estimated Litigation Liability Estimated liability Debt Securities, Available-for-Sale [Table] Debt Securities Available For Sale [Table] Entity Interactive Data Current Entity Interactive Data Current Fair Value Measurement [Domain] Fair Value Measurement Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Cash flows from operating activities: Unbilled Receivables, Current Unbilled receivables Line of Credit Facility, Current Borrowing Capacity Line of credit facility Entity Tax Identification Number Entity Tax Identification Number Revenues [Abstract] Revenues: Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Basis of Presentation of Interim Period Statements Income Tax Authority, Name [Domain] Income Tax Authority, Name Local Phone Number Local Phone Number Workers compensation reserve activity. Workers Compensation Reserve Activity Table [Text Block] Summarizes Aggregate Workers' Compensation Reserve Activity Common Stock Split [Policy Text Block] Common Stock Split. Common stock split workers compensation reserve. Workers Compensation Reserve [Abstract] Restricted Cash and Investments, Noncurrent Restricted cash and investments Restricted Cash and Investments, Noncurrent, Total Cash and Cash Equivalents [Member] Cash and Cash Equivalents [Member] Staffing services. Staffing Services [Member] Staffing Services [Member] Entity Emerging Growth Company Entity Emerging Growth Company Term loan. Term Loan [Member] Term Loan [Member] Tax Credit Carryforward, Name [Domain] Tax Credit Carryforward, Name