75000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 75010 - Statement - Statements of Net Assets Available for Benefits link:presentationLink link:calculationLink link:definitionLink 75020 - Statement - Statement of Changes in Net Assets Available for Benefits link:presentationLink link:calculationLink link:definitionLink 75030 - Disclosure - Description of the Plan link:presentationLink link:calculationLink link:definitionLink 75040 - Disclosure - Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 75050 - Disclosure - NAV Per Share link:presentationLink link:calculationLink link:definitionLink 75060 - Disclosure - Guaranteed Investment Contract link:presentationLink link:calculationLink link:definitionLink 75070 - Disclosure - Income Tax Status link:presentationLink link:calculationLink link:definitionLink 75080 - Disclosure - Related Party Transactions and Party-in-interest Transactions link:presentationLink link:calculationLink link:definitionLink 75090 - Disclosure - Reconciliation of Financial Statements to Form 5500 link:presentationLink link:calculationLink link:definitionLink 75100 - Disclosure - Risks and Uncertainties link:presentationLink link:calculationLink link:definitionLink 75110 - Disclosure - Subsequent Events link:presentationLink link:calculationLink link:definitionLink 75120 - Disclosure - Schedule H; Line 4i - Schedule of Assets (Held at End of Year) link:presentationLink link:calculationLink link:definitionLink 75130 - Disclosure - Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 75140 - Disclosure - Significant Accounting Policies (Tables) link:presentationLink link:calculationLink link:definitionLink 75150 - Disclosure - NAV Per Share (Tables) link:presentationLink link:calculationLink link:definitionLink 75160 - Disclosure - Reconciliation of Financial Statements to Form 5500 (Tables) link:presentationLink link:calculationLink link:definitionLink 75170 - Disclosure - Description of the Plan (Details) link:presentationLink link:calculationLink link:definitionLink 75180 - Disclosure - Significant Accounting Policies - Schedule of Plan's Investments at Fair Value on a Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 75190 - Disclosure - NAV Per Share - Summary of Plan's Investments with a Reported NAV (Details) link:presentationLink link:calculationLink link:definitionLink 75200 - Disclosure - Guaranteed Investment Contract (Details) link:presentationLink link:calculationLink link:definitionLink 75210 - Disclosure - Income Tax Status (Details) link:presentationLink link:calculationLink link:definitionLink 75220 - Disclosure - Related Party Transactions and Party-in-interest Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 75230 - Disclosure - Reconciliation of Financial Statements to Form 5500 - Reconciliation Of Net Assets (Details) link:presentationLink link:calculationLink link:definitionLink 75240 - Disclosure - Reconciliation of Financial Statements to Form 5500 - Reconciliation Of Changes In Net Assets (Details) link:presentationLink link:calculationLink link:definitionLink 75250 - Disclosure - Schedule H; Line 4i - Schedule of Assets (Held at End of Year) (Details) link:presentationLink link:calculationLink link:definitionLink 75250 - Disclosure - Schedule H; Line 4i - Schedule of Assets (Held at End of Year) (Details) [Default] link:presentationLink link:calculationLink link:definitionLink EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage Maximum borrowing percentage EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Forfeitures of employer profit sharing contributions EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Administrative expenses Administrative expenses EBP, Net Asset Available for Benefit Net assets available for benefits per the financial statements Net assets available for benefits at End of Year Net assets available for benefits at Beginning of Year Net Assets Available for Benefits Fixed Income Funds Fixed Income Funds [Member] Minimum [Member] Minimum EBP, Recent Accounting Pronouncements [Policy Text Block] Disclosure of accounting policy for recent accounting pronouncements. Recent Accounting Pronouncements EBP, Schedule of Asset Held for Investment [Table] EBP, Tax Status [Line Items] EBP, Payment to Participant [Policy Text Block] Distributions to Participants EBP, Expense [Policy Text Block] Administrative Expenses EBP, Description of Plan and Accounting Change [Abstract] Multi-asset Class Funds Multi Asset Class Funds [Member] Multi asset class funds. EBP, Form 5500 Caption, Net Income (Loss) Change in net assets available for benefits per the Form 5500 EBP, Fully Benefit-Responsive Investment Contract [Table] NAV Per Share Employee Benefit Plan Net Asset Value Per Share [Text Block] Employee benefit plan net asset value per share. Interest receivable Employee Benefit Plan Reconciliation To Form 5500 Net Asset Available For Benefit, Interest Receivable Employee Benefit Plan Reconciliation To Form 5500 Net Asset Available For Benefit, Interest Receivable Document Period End Date Employee Benefit Plan Employee Worked Hours Employee benefit plan employee worked hours. Employee benefit plan employee worked hours Document Information [Table] EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Current Value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Participation Status [Extensible Enumeration] Investments [Domain] EBP, Statement of Net Asset Available for Benefit [Abstract] EBP, Employer Contribution, Receivable Employer's contribution receivable Self-directed brokerage account EBP, Self-Directed Brokerage Account [Member] EBP, Note Receivable from Participant Notes receivable from participants EBP, Fully Benefit-Responsive Investment Contract [Text Block] Guaranteed Investment Contract Income Tax Status EBP, Tax Status [Text Block] Employee Benefit Plan Benefits Payable Employee benefit plan benefits payable. Benefits payable Employee Benefit Plan Participant Contribution Allocated to Any Other Investment Option Employee benefit plan participant contribution allocated to any other investment option. Participant contribution allocated to any other investment option EBP, Use of Estimate [Policy Text Block] Use of Estimates EBP, Form 5500 Caption, Net Income (Loss) [Abstract] Reconciliation of changes in net assets EBP, Accounting Policy [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] EBP, Investment [Policy Text Block] Investment Valuation and Income Recognition Common Collective Trust [Member] Collective trusts measured at NAV EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] Schedule of reconciliation of financial statements to form 5500 EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Interest income on notes receivable from participants EBP 001 EBP 001 [Member] EBP 001. Statistical Measurement [Axis] Basis of Presentation EBP, Basis of Accounting [Policy Text Block] EBP, Contributions and Contributions Receivable [Policy Text Block] Disclosure of accounting policy for determining contributions receivable. Contributions and Contributions Receivable Reconciliation of net assets EBP, Form 5500 Caption, Net Assets [Abstract] EBP, Investment, Fair Value and NAV [Table Text Block] Schedule of plan's investments at fair value on a recurring basis EBP, Tax Qualification Status [Extensible Enumeration] EBP, Change in Net Asset Available for Benefit, Increase Total additions EBP, Fully Benefit-Responsive Investment Contract, Description EBP, Fully Benefit-Responsive Investment Contract, Description Fair Value Hierarchy and NAV [Axis] Deductions: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] EBP, Description of Plan [Line Items] EBP, Risk and Uncertainty [Abstract] Document Fiscal Period Focus EBP, Description, Available [true false] Description of plan EBP, Participant Contribution, Automatic, Deferral Rate Employee benefit plan, participant contribution, automatic, deferral rate Common Stock EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] EBP, Change in Net Asset Available for Benefit, Decrease Total deductions Total deductions EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Investment, Issuer Name [Extensible Enumeration] Employee Benefit Plan Redemption Notice Period Employee benefit plan redemption notice period. Redemption Notice Period EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Maximum borrowing amount Fair Value, Inputs, Level 1 [Member] Level 1 Investment Type [Axis] Risks and Uncertainties EBP, Risk and Uncertainty [Text Block] Common Stock [Member] Common stock Statistical Measurement [Domain] EBP, Fully Benefit-Responsive Investment Contract [Line Items] Guaranteed Investment Contract Entity Central Index Key Significant Accounting Policies EBP, Summary of Accounting Policy [Text Block] Current Fiscal Year End Date Fair Value, Inputs, Level 2 [Member] Level 2 EBP, Statement of Net Asset Available for Benefit [Table] EBP, Accounting Policy [Line Items] EBP, Investment, Fair Value and NAV [Abstract] EBP, Investment, Excluding Plan Interest in Master Trust, Contract Value Fully benefit-responsive investment contract at contract value Fair Value Hierarchy and NAV [Domain] EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment, Total Interest and dividends from investments Employee Benefit Plan Redemption Frequency Employee benefit plan redemption frequency. Redemption Frequency Employee Benefit Plan Vesting Service Period Employee benefit plan vesting service period . Vesting service period Reconciliation of Financial Statements to Form 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Related Party and Party-in-Interest Transactions [Text Block] Related Party Transactions and Party-in-interest Transactions Fair value of the participants vested accrued benefit Employee Benefit Plan Fair Value of the Participants Vested Accrued Benefit Employee benefit plan fair value of the participants vested accrued benefit. Net increase in assets available for benefits reported in the financial statements EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Net increase Assets: EBP, Asset [Abstract] Total Investments EBP, Investment, Excluding Plan Interest in Master Trust, Fair and Contract Value Employee Benefit Plan Forfeitures Available for Future Use Employee benefit plan forfeitures available for future use. Forfeitures available for future use Document Type EBP, Description of Plan [Table] EBP, Contribution [Policy Text Block] Contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Total Participant contributions EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover Participating employers' contributions EBP, Statement of Change in Net Asset Available for Benefit [Abstract] EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment, Total Net appreciation in fair value of investments Entity Registrant Name EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Description of Plan [Text Block] DESCRIPTION OF THE PLAN EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Table] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] EBP, Plan Name EBP, Risk and Uncertainty [Line Items] Number of shares held EBP, Investment, Number of Shares EBP, Tax Determination Letter, Date Tax determination letter, date EBP, Plan Number EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Ending Balance EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Beginning Balance EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value, Total Investments at fair value Fair Value EBP, Tax Status [Abstract] EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Contract Value to Current Value Adjustment Employer's contribution receivable EBP, Trustee [Member] EBP, Trustee Employee Benefit Plan Profit Sharing Contributions Vesting Service Period Employee benefit plan profit sharing contributions vesting service period. Profit sharing contributions vesting service period Mutual Fund [Member] Mutual funds Benefits paid to participants EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Benefits paid to participants EBP, Statement of Net Asset Available for Benefit [Line Items] Equity Index Funds [Member] Equity Index Funds. Equity Index Funds EBP Stock Held Investment Net Income (Loss) Stock held investment net loss Empolyee benefit plan stock held investment net income (loss). EBP, Reconciliation to Form 5500, Change in Net Asset Available for Benefit, Increase (Decrease) from Contract Value to Current Value Change in contributions receivable EBP, Note Receivable from Participant [Policy Text Block] Notes Receivable from Participants Entity [Domain] Plan purchased EBP, Investment Acquired, Excluding Plan Interest in Master Trust, Cost EBP, Schedule of Asset Held for Investment [Text Block] Schedule H; Line 4i - Schedule of Assets (Held at End of Year) EBP, Related Party and Party-in-Interest [Axis] EBP, Related Party and Party-in-Interest Transactions [Line Items] Maximum [Member] Maximum Employee Benefit Plan Note Receivable from Participant Interest Rate Employee benefit plan note receivable from participant interest rate. Interest rate Employee Benefit Plan Participant Contribution Automatic Increase Employee benefit plan participant contribution automatic increase. Employee benefit plan participant contribution automatic increase EBP, Asset Total Assets Employee Benefit Plan Distribution Employee benefit plan distribution. Distribution Plan sold EBP, Investment Sold, Excluding Plan Interest in Master Trust, Selling Price Document Fiscal Year Focus EBP, Participant Contribution, Pretax, Maximum Annual Compensation to Total Compensation, Percentage Participant contribution maximum , percentage EBP, Change in Net Asset Available for Benefit, Increase [Abstract] Additions: EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Reconciliation of Financial Statements to Form 5500 EBP, Fully Benefit-Responsive Investment Contract [Abstract] EBP, Fair Value, Investment, NAV, Unfunded Commitment Unfunded Commitment EBP, Number of Participants Number of participants EBP, Reconciliation of Financial Statement to Form 5500 [Table] Amendment Flag Employee Benefit Plan Participant Contribution Employer Allocation Employee benefit plan participant contribution employer allocation. Employer allocation EBP, Tax Determination Letter, Obtained [true false] EBP, Subsequent Event [Text Block] Subsequent Events EBP, Tax Status [Table] Fair Value Measured at Net Asset Value Per Share Fair Value Measured at Net Asset Value Per Share [Member] Investment, Identifier [Axis] EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Participant rollovers EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Investment, Interest Rate Rate of Interest Legal Entity [Axis] EBP, Fair Value, Investment, NAV, Redemption Other Restriction, Description Other Redemption Restrictions EBP, Asset Held for Investment, Party-in-Interest [true false] Party-in-interest Cover [Abstract] EBP, Asset Held for Investment Current Value, Total EBP, Investment, Fair Value and NAV [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Risk and Uncertainty [Table] EBP, Investment, Fair Value and NAV [Line Items] EBP, Related Party and Party-in-Interest [Domain] EBP, Statement of Change in Net Asset Available for Benefit [Table] Employee Benefit Plan Investment Fair Value and NAV 1 [Table Text Block] Employee benefit plan investment fair value and NAV 1. Summary of plan's investments with a reported NAV Net assets available for benefits per the Form 5500 EBP, Form 5500 Caption, Net Assets EBP, Subsequent Event [Abstract] Employee Benefit Plan Note Receivable from Participant Repayment Terms of Loans Period Employee benefit plan note receivable from participant repayment terms of loans period. Repayment terms of loans Document Information [Line Items] Brokerage Link. Eagle Materials Inc. Wells Fargo. Brokerage Link [Member] Harbor Capital. Principal [Member] MFS [Member] NY Life. Harbor Capital [Member] Principal. Northern Trust. Great Grey Trust [Member] Northern Trust [Member] MFS. Vanguard. Wells Fargo [Member] Vanguard [Member] Great Grey Trust. Eagle Materials Inc. [Member] Fidelity [Member] NY Life [Member] Fideliy.