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[Table] Equity Method Investment [Table] Other assets Other Assets, Current Real Estate Inventory, Capitalized Interest Costs [Roll Forward] Real Estate Inventory, Capitalized Interest Costs [Roll Forward] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Remaining performance obligations Revenue, Remaining Performance Obligation, Amount Current Fiscal Year End Date Current Fiscal Year End Date Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Derivative [Line Items] Derivative [Line Items] Related Party Transaction [Domain] Related Party Transaction [Domain] Increase in earnest money deposits Increase (Decrease) in Earnest Money Deposits Outstanding Stock repurchases (in shares) Stock Repurchased 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Value Disclosures [Text Block] NYSE TEXAS, INC. NYSE TEXAS, INC. [Member] Level 3 Fair Value, Inputs, Level 3 [Member] Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Land held for sale Inventory, Land, Held-for-Sale Total other expenses Other Selling, General and Administrative Expense Supplemental disclosure of cash flow information: Supplemental Cash Flow Information [Abstract] Financial services Financial Services [Member] Financial Services Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table] Ownership percentage by noncontrolling owners (as a percent) Subsidiary, Ownership Percentage, Noncontrolling Owner PEO Name PEO Name Geographical [Axis] Geographical [Axis] (Decrease) increase in accrued expenses Increase (Decrease) in Accrued Liabilities Participation interest purchased, maximum principal (as a percent) Debt Instrument, Participation Interest, Remainder Of Principal, Percentage Debt Instrument, Participation Interest, Remainder Of Principal, Percentage Restricted cash Restricted Cash Customer and builder deposits Contract with Customer, Liability Other assets Other Assets Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Thereafter Lessee, Operating Lease, Liability, To Be Paid, After Year Four Lessee, Operating Lease, Liability, To Be Paid, After Year Four Legal Entity [Axis] Legal Entity [Axis] Preferred dividends Preferred Stock Dividends, Income Statement Impact Equity Method Investments Equity Method Investments [Policy Text Block] Cash and cash equivalents and restricted cash, beginning of period Cash and cash equivalents and restricted cash, end of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Homebuilders and Multi-Family Developers Homebuilders [Member] Homebuilders [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Share-Based Payment Arrangement, Employee Share-Based Payment Arrangement, Employee [Member] Debt Instrument [Axis] Debt Instrument [Axis] Subsequent Event [Table] Subsequent Event [Table] Dividends paid Dividends, Cash January 29, 2027 Warehouse Facility Expiring January 29, 2027 [Member] Warehouse Facility Expiring January 29, 2027 Period loan is sold Debt Instrument, Sold, Term Debt Instrument, Sold, Term Distributions to redeemable noncontrolling interest Payments for Repurchase of Redeemable Noncontrolling Interest Customer [Domain] Customer [Domain] Investment, Name [Domain] Investment, Name [Domain] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Basic net income attributable to Green Brick Partners, Inc. per common share (in dollars per share) Earnings Per Share, Basic Repurchases of common stock Payments for Repurchase of Common Stock Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Award Type Award Type [Axis] Short term lease cost Short-Term Lease, Cost Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Earnest money deposits Earnest Money Deposits Retained earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Common Stock Common Stock [Member] Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover page. Cover [Abstract] Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Noncontrolling Interest [Abstract] Rainwater Crossing Single-Family Rainwater Crossing Single-Family [Member] Rainwater Crossing Single-Family Equity Method Investment, Nonconsolidated Investee or Group of Investees Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member] Derivative Contract [Domain] Derivative Contract [Domain] Equity Awards Adjustments Equity Awards Adjustments [Member] Real estate inventory: Inventory, Real Estate [Abstract] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items] Total liabilities and equity Liabilities and Equity Decrease (increase) in mortgage loans held for sale Increase (Decrease) in Loan, Mortgage, Held-for-Sale Employee Stock Option Share-Based Payment Arrangement, Option [Member] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Noncontrolling interests Others Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related Party [Domain] Related and Nonrelated Parties [Domain] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Additional paid-in capital Additional Paid in Capital Other income, net Other Nonoperating Income (Expense) Total GRBK Stockholders’ Equity Parent [Member] Name Awards Close in Time to MNPI Disclosures, Individual Name Equity: Equity, Including Portion Attributable to Noncontrolling Interest [Abstract] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Schedule of Changes in Redeemable Noncontrolling Interest Redeemable Noncontrolling Interest [Table Text Block] Notes payable Other Notes Payable Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Mortgage loans, principal outstanding Loan, Held-in-Portfolio, Principal Outstanding Adjustment to Compensation: Adjustment to Compensation [Axis] Notional amount, pull through rate (as a percent) Derivative, Notional Amount, Pull Through, Percent Derivative, Notional Amount, Pull Through, Percent Net income attributable to redeemable noncontrolling interest partner Net Income (Loss) Attributable to Redeemable Noncontrolling Interest Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] December 15, 2027 Warehouse Facility Expiring December 15, 2027 [Member] Warehouse Facility Expiring December 15, 2027 Summary of Preferred Stock Schedule of Stock by Class [Table Text Block] Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Accounts payable Accounts Payable Name Measure Name EJB River Holdings, LLC EJB River Holdings, LLC [Member] EJB River Holdings, LLC Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] 2028 Notes 2028 Notes [Member] 2028 Notes Additional Paid-in Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Accrued expenses Accrued Liabilities Changes in liability for existing warranties Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and Cash Equivalent Operating lease cost Operating Lease, Expense Retirement of treasury shares Treasury Stock, Retired, Cost Method, Amount Company Selected Measure Amount Company Selected Measure Amount Distributions from unconsolidated entities Proceeds from Equity Method Investment, Distribution Equity Method Investments and Joint Ventures [Abstract] Equity Method Investments and Joint Ventures [Abstract] Depreciation and amortization expense Depreciation, Depletion and Amortization Interest charged to cost of revenues Real Estate Inventory, Capitalized Interest Costs, Cost of Sales Interest incurred Real Estate Inventory, Capitalized Interest Costs Incurred Entity Address, Address Line Two Entity Address, Address Line Two Land held for future development Land Available for Development Issuance of common stock from equity incentive plan, net of forfeitures (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Derivative liabilities Derivative Liability Non-PEO NEO Non-PEO NEO [Member] Senior Notes Senior Notes [Member] Entity Address, Address Line One Entity Address, Address Line One 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 Income tax expense Income Tax Expense (Benefit) Net income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Total cost of revenues Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Principles of Consolidation Consolidation, Policy [Policy Text Block] Forecast [Member] Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Consolidated Entity, Excluding Consolidated VIE Variable Interest Entity, Primary Beneficiary [Member] Net income attributable to Green Brick Partners, Inc. Net income attributable to Green Brick Partners, Inc. Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Statement [Table] Statement [Table] Restatement Determination Date: Restatement Determination Date [Axis] Share-Based Payment Arrangement, Nonemployee Share-Based Payment Arrangement, Nonemployee [Member] January 31, 2027 Warehouse Facility Expiring January 31, 2027 [Member] Warehouse Facility Expiring January 31, 2027 Schedule of Contract Balances and Revenue Recognized During the Period Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Redeemable noncontrolling interest, beginning of period Redeemable noncontrolling interest, end of period Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount Federal income tax payable Accrued Income Taxes Revenues: Revenues [Abstract] Retirement of treasury shares (in shares) Treasury Stock, Shares, Retired Summary of Significant Accounting Policies Basis of Presentation and Significant Accounting Policies [Text Block] Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Derivative Instruments and Hedging Activities Disclosure [Abstract]