Green Brick Partners (GRBK) 10-Q 2 Nov 21 2021 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2021	Oct. 29, 2021
Entity Information [Line Items]
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	GRBK
Security Exchange Name	NASDAQ
Document Transition Report	false
Document Quarterly Report	true
Entity Incorporation, State or Country Code	DE
Entity Registrant Name	Green Brick Partners, Inc.
Entity Central Index Key	0001373670
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Tax Identification Number	20-5952523
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding		50,759,972
Entity Shell Company	false
Entity File Number	001-33530
Entity Address, Address Line One	2805 Dallas Pkwy
Entity Address, Address Line Two	Ste 400
Entity Address, City or Town	Plano
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75093
City Area Code	(469)
Local Phone Number	573-6755
Entity Small Business	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
ASSETS
Restricted cash	$ 31,442	$ 14,156
Inventory	1,170,297	844,635
Investments in unconsolidated entities	52,735	46,443
Operating Lease, Right-of-Use Asset	5,023	2,538
Property and equipment, net	3,172	3,595
Earnest money deposits	26,403	22,242
Deferred income tax assets, net	15,376	15,376
Intangible assets, net	558	622
Goodwill	680	680
Other assets	13,040	13,857
Total assets	1,347,316	988,847
LIABILITIES AND EQUITY
Accounts payable	48,314	24,521
Accrued expenses	64,567	40,416
Operating Lease, Liability	5,053	2,591
Borrowings on lines of credit, net	122,717	106,687
Senior Notes	235,737	111,056
Contract with Customer, Liability	70,079	38,131
Contingent consideration	0	368
Total liabilities	546,689	325,895
Commitments and contingencies
Redeemable noncontrolling interest in equity of consolidated subsidiary	17,406	13,543
Green Brick Partners, Inc. stockholders’ equity
Preferred stock, $0.01 par value: 5,000,000 shares authorized; none issued and outstanding	0	0
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	511	511
Additional Paid in Capital	293,050	293,242
Retained earnings	476,395	349,656
Total Green Brick Partners, Inc. stockholders’ equity	766,789	640,242
Noncontrolling interests	16,432	9,167
Total equity	783,221	649,409
Total liabilities and equity	1,347,316	988,847
Cash and Cash Equivalents, at Carrying Value	21,561	19,479
Accounts Receivable, after Allowance for Credit Loss	7,029	5,224
Treasury Stock, Value	3,167	3,167
Other Notes Payable	$ 222	$ 2,125

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common Stock, Shares, Issued	51,151,911	51,053,858
Common stock, shares outstanding (in shares)	50,759,972	50,661,919

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total revenues	$ 342,340	$ 275,821	$ 950,625	$ 721,921
Cost of Goods and Services Sold	251,004	207,935	699,324	551,171
Total gross profit	91,336	67,886	251,301	170,750
Selling, general and administrative expenses	33,709	29,177	97,182	81,718
Business Combination, Acquisition Related Costs	0	(210)	0	(210)
Equity in income of unconsolidated entities	5,555	5,299	14,039	13,038
Other income, net	1,976	2,125	6,239	3,004
Income before income taxes	65,158	45,923	174,397	104,864
Income tax expense	13,898	9,969	37,093	17,357
Net income	51,260	35,954	137,304	87,507
Less: Net income attributable to noncontrolling interests	2,753	1,135	10,565	3,124
Net income attributable to Green Brick Partners, Inc.	$ 48,507	$ 34,819	$ 126,739	$ 84,383
Net income attributable to Green Brick Partners, Inc. per common share:
Basic (in dollars per share)	$ 0.96	$ 0.69	$ 2.50	$ 1.67
Diluted (in dollars per share)	$ 0.95	$ 0.68	$ 2.48	$ 1.66
Weighted average common shares used in the calculation of net income attributable to Green Brick Partners, Inc. per common share:
Basic (in shares)	50,732	50,617	50,689	50,552
Diluted (in shares)	51,079	50,876	51,046	50,739
Residential Real Estate [Member]
Total revenues	$ 338,900	$ 263,885	$ 889,636	$ 683,739
Cost of Goods and Services Sold	247,899	198,422	654,136	521,332
Real Estate, Other [Member]
Total revenues	3,440	11,936	60,989	38,182
Cost of Goods and Services Sold	$ 3,105	$ 9,513	$ 45,188	$ 29,839

Statement of Shareholders' Equi

Statement of Shareholders' Equity (Statement) - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Common Stock [Member]	Retained Earnings	Noncontrolling Interest
Statement of Stockholders' Equity [Abstract]
Additional Paid in Capital	$ 290,799
Treasury Stock, Value	$ 3,167
Treasury Stock, Common, Shares	391,939
Common Stock, Shares, Issued	50,879,949
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 509
Treasury Stock, Value	$ 3,167
Common Stock, Shares, Issued	50,879,949
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 509
Treasury Stock, Common, Shares	391,939
Additional Paid in Capital	$ 290,799
Retained Earnings (Accumulated Deficit)	235,027
Stockholders' Equity Attributable to Parent	523,168
Stockholders' Equity Attributable to Noncontrolling Interest	13,227
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 536,395
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	249,617
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 1,601	$ 1,598	$ 3
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 592	(591)	(1)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	75,708
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 357
Temporary Equity, Accretion to Redemption Value, Adjustment		225
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	5,251
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	1,381
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	85,764
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition	357
Temporary Equity, Accretion to Redemption Value, Adjustment		225
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	592	(591)	(1)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 1,601	1,598	3
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	249,617
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	75,708
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 357
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	5,251
Net income attributable to Green Brick Partners, Inc.	84,383
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	1,381
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	85,764
Noncontrolling Interest, Increase from Business Combination	400
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition	357
Payment for Contingent Consideration Liability, Operating Activities	5,267
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent	937
Additional Paid in Capital	292,887
Treasury Stock, Value	$ 3,167
Treasury Stock, Common, Shares	391,939
Common Stock, Shares, Issued	51,053,858
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511
Treasury Stock, Value	$ 3,167
Common Stock, Shares, Issued	51,053,858
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511
Treasury Stock, Common, Shares	391,939
Additional Paid in Capital	$ 292,887
Retained Earnings (Accumulated Deficit)	285,528
Stockholders' Equity Attributable to Parent	575,759
Stockholders' Equity Attributable to Noncontrolling Interest	8,186
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	583,945
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	139	139
Temporary Equity, Accretion to Redemption Value, Adjustment	(638)	(638)
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	634
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	35,453
Temporary Equity, Accretion to Redemption Value, Adjustment	(638)	(638)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	139	139
Net income attributable to Green Brick Partners, Inc.	34,819
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	634
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	35,453
Noncontrolling Interest, Change in Redemption Value	638
Additional Paid in Capital	292,388	292,388
Treasury Stock, Value	$ 3,167
Treasury Stock, Common, Shares	391,939
Common Stock, Shares, Issued	51,053,858
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511		511
Treasury Stock, Value	$ 3,167
Common Stock, Shares, Issued	51,053,858
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511		511
Treasury Stock, Common, Shares	391,939
Additional Paid in Capital	$ 292,388	292,388
Retained Earnings (Accumulated Deficit)	320,347
Stockholders' Equity Attributable to Parent	610,079
Stockholders' Equity Attributable to Noncontrolling Interest	8,820
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	618,899
Additional Paid in Capital	293,242
Treasury Stock, Value	$ 3,167
Treasury Stock, Common, Shares	391,939
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 7.49
Common Stock, Shares, Issued	51,053,858
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511
Treasury Stock, Value	$ 3,167
Common Stock, Shares, Issued	51,053,858
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511
Treasury Stock, Common, Shares	391,939
Additional Paid in Capital	$ 293,242
Retained Earnings (Accumulated Deficit)	349,656
Stockholders' Equity Attributable to Parent	640,242
Stockholders' Equity Attributable to Noncontrolling Interest	9,167
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 649,409
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	3 years 25 days
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	139,371
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 2,437	2,436	1
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 834	833	(1)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	41,318
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 480
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	1,606
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	8,871
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	$ 135,610
Granted (in shares)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period	0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	3 years 25 days
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 834	833	(1)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 2,437	2,436	1
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	139,371
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	41,318
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 480
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	1,606
Net income attributable to Green Brick Partners, Inc.	126,739
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	8,871
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	135,610
Noncontrolling Interest, Change in Redemption Value	(2,275)	(2,275)
Payment for Contingent Consideration Liability, Operating Activities	368
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent				$ 937	$ (937)
Additional Paid in Capital	292,157
Treasury Stock, Value	$ 3,167
Treasury Stock, Common, Shares	391,939
Common Stock, Shares, Issued	51,151,911
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511
Treasury Stock, Value	$ 3,167
Common Stock, Shares, Issued	51,151,911
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511
Treasury Stock, Common, Shares	391,939
Additional Paid in Capital	$ 292,157
Retained Earnings (Accumulated Deficit)	427,888
Stockholders' Equity Attributable to Parent	717,389
Stockholders' Equity Attributable to Noncontrolling Interest	14,302
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	731,691
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	161
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	2,130
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	50,637
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	161
Net income attributable to Green Brick Partners, Inc.	48,507
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	2,130
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	50,637
Noncontrolling Interest, Change in Redemption Value	732	732
Additional Paid in Capital	293,050	293,050
Treasury Stock, Value	$ 3,167
Treasury Stock, Common, Shares	391,939
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 7.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	$ 6,515
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	500,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 7.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	$ 6,515
Common Stock, Shares, Issued	51,151,911
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511		511
Treasury Stock, Value	$ 3,167
Common Stock, Shares, Issued	51,151,911
Common stock, $0.01 par value: 100,000,000 shares authorized; 51,151,911 and 51,053,858 issued and 50,759,972 and 50,661,919 outstanding as of September 30, 2021 and December 31, 2020, respectively	$ 511		$ 511
Treasury Stock, Common, Shares	391,939
Additional Paid in Capital	$ 293,050	$ 293,050
Retained Earnings (Accumulated Deficit)	476,395
Stockholders' Equity Attributable to Parent	766,789
Stockholders' Equity Attributable to Noncontrolling Interest	16,432
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 783,221

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 137,304,000	$ 87,507,000
Depreciation, Depletion and Amortization	2,075,000	2,461,000
Gain (Loss) on Disposition of Property Plant Equipment	195,000	31,000
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Share-based compensation expense	2,917,000	1,958,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	0	210,000
Earnest Money Deposits and Pre-acquisition Costs Written-Off	210,000	1,490,000
Deferred income taxes, net	0	(115,000)
Income (Loss) from Equity Method Investments	(14,039,000)	(13,038,000)
Distributions of income from unconsolidated entities	7,755,000	7,444,000
Changes in operating assets and liabilities:
Increase in receivables	(1,805,000)	(931,000)
Increase in inventory	(325,086,000)	(25,263,000)
Increase in earnest money deposits	(4,166,000)	(9,067,000)
Decrease (increase) in other assets	617,000	(6,951,000)
Increase (decrease) in accounts payable	(23,793,000)	6,917,000
Increase in accrued expenses	24,151,000	25,191,000
Increase (Decrease) in Contract with Customer, Liability	31,948,000	5,385,000
Net cash (used in) provided by operating activities	(114,499,000)	64,128,000
Cash flows from investing activities:
Purchase of property and equipment, net of disposals	(1,782,000)	(1,738,000)
Net cash used in investing activities	(1,790,000)	(12,085,000)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Borrowings from lines of credit	506,000,000	217,500,000
Repayments of Lines of Credit	490,000,000	289,000,000
Payment, Tax Withholding, Share-based Payment Arrangement	834,000	592,000
Contributions of LLC Members	0	400,000
Payments to Noncontrolling Interests	1,606,000	5,251,000
Net cash provided by (used in) financing activities	135,657,000	(38,879,000)
Net increase in cash and cash equivalents and restricted cash	19,368,000	13,164,000
Cash and cash equivalents, beginning of period		33,269,000
Restricted cash, beginning of period	14,156,000	4,416,000
Cash and cash equivalents and restricted cash, beginning of period	33,635,000	37,685,000
Cash and cash equivalents, end of period		40,269,000
Restricted cash, end of period	31,442,000	10,580,000
Cash and cash equivalents and restricted cash, end of period	53,003,000	50,849,000
Supplemental Cash Flow Information [Abstract]
Interest Paid, Excluding Capitalized Interest, Operating Activities	0	0
Income Taxes Paid, Net	32,485,000	10,181,000
Earnest Money Deposits and Pre-acquisition Costs Written-Off	210,000	1,490,000
Proceeds from Notes Payable	127,000	10,715,000
Repayments of Notes Payable	(2,030,000)	(8,584,000)
Payments of Debt Issuance Costs	(894,000)	(62,000)
Payments for Repurchase of Redeemable Noncontrolling Interest	(106,000)	(1,505,000)
Payment for Contingent Consideration Liability, Operating Activities	(368,000)	(5,267,000)
Payments to Acquire Equity Method Investments	(8,000)	(10,347,000)
Proceeds from Issuance of Senior Long-term Debt	$ 125,000,000	$ 37,500,000

Significant Accounting Policies

Significant Accounting Policies Accounting Policies (Notes)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“GAAP”) as set forth in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) and applicable regulations of the Securities and Exchange Commission (“SEC”), but do not include all of the information and footnotes required for complete financial statements. The condensed consolidated balance sheet as of December 31, 2020 was derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. In the opinion of management, the accompanying unaudited condensed consolidated financial statements for the periods presented reflect all adjustments of a normal, recurring nature necessary to fairly state our financial position, results of operations and cash flows. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. Operating results for the three and nine months ended September 30, 2021 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2021 or subsequent periods due to seasonal variations and other factors. Principles of Consolidation The accompanying unaudited condensed consolidated financial statements include the accounts of Green Brick Partners, Inc., its controlled subsidiaries, and variable interest entities (“VIEs”) in which Green Brick Partners, Inc. or one of its controlled subsidiaries is deemed to be the primary beneficiary (together, the “Company”, “we”, or “Green Brick”). All intercompany balances and transactions have been eliminated in consolidation. The Company uses the equity method of accounting for its investments in unconsolidated entities over which it exercises significant influence but does not have a controlling interest. Under the equity method, the Company’s share of the unconsolidated entities’ earnings or losses, if any, is included in the condensed consolidated statements of income. Use of Estimates The preparation of the condensed consolidated financial statements in conformity with GAAP requires management of the Company to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes, including the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates. Reclassifications Certain prior period amounts have been reclassified to conform to the current period presentation with no impact to net income in any period. For a complete set of the Company’s significant accounting policies, refer to Note 1 of the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. Recent Accounting Pronouncements
Principles of Consolidation	Principles of Consolidation The accompanying unaudited condensed consolidated financial statements include the accounts of Green Brick Partners, Inc., its controlled subsidiaries, and variable interest entities (“VIEs”) in which Green Brick Partners, Inc. or one of its controlled subsidiaries is deemed to be the primary beneficiary (together, the “Company”, “we”, or “Green Brick”). All intercompany balances and transactions have been eliminated in consolidation.
Equity Method Investments [Policy Text Block]	The Company uses the equity method of accounting for its investments in unconsolidated entities over which it exercises significant influence but does not have a controlling interest. Under the equity method, the Company’s share of the unconsolidated entities’ earnings or losses, if any, is included in the condensed consolidated statements of income.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting PronouncementsIn December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying Accounting for Income Taxes (“ASU 2019-12”), which simplifies the accounting for income taxes by eliminating certain exceptions to the guidance in ASC 740, Income Taxes related to the approach for intraperiod tax allocation, the methodology for calculating income taxes in an interim period and the recognition of deferred tax liabilities for outside basis differences. ASU 2019-12 also simplifies aspects of the accounting for franchise taxes and enacted changes in tax laws or rates and clarifies the accounting for transactions that result in a step-up in the tax basis of goodwill. ASU 2019-12 is effective for annual reporting periods, and interim periods therein, beginning after December 15, 2020, with early adoption permitted.

Investment in Unconsolidated En

Investment in Unconsolidated Entities	9 Months Ended
	Sep. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Investment in Unconsolidated Entities	INVESTMENT IN UNCONSOLIDATED ENTITIES A summary of the Company’s investments in unconsolidated entities is as follows (in thousands): September 30, 2021 December 31, 2020 GB Challenger, LLC $ 35,196 $ 29,488 GBTM Sendera, LLC 9,854 9,846 EJB River Holdings, LLC 6,130 5,296 Green Brick Mortgage, LLC 765 1,207 BHome Mortgage, LLC 790 606 Total investment in unconsolidated entities $ 52,735 $ 46,443 A summary of the unaudited condensed financial information of the six unconsolidated entities that are accounted for by the equity method is as follows (in thousands): September 30, 2021 December 31, 2020 Assets: Cash $ 14,852 $ 12,765 Accounts receivable 3,239 1,815 Bonds and notes receivable 5,942 5,942 Loans held for sale, at fair value 38,398 14,530 Inventory 161,710 122,819 Other assets 7,661 8,377 Total assets $ 231,802 $ 166,248 Liabilities: Accounts payable $ 13,477 $ 7,171 Accrued expenses and other liabilities 15,992 11,148 Notes payable 104,326 60,642 Total liabilities $ 133,795 $ 78,961 Owners’ equity: Green Brick $ 50,075 $ 43,451 Others 47,932 43,836 Total owners’ equity $ 98,007 $ 87,287 Total liabilities and owners’ equity $ 231,802 $ 166,248 Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Revenues $ 64,131 $ 50,068 $ 155,589 $ 138,381 Costs and expenses 52,917 39,188 127,276 111,340 Net earnings of unconsolidated entities $ 11,214 $ 10,880 $ 28,313 $ 27,041 Company’s share in net earnings of unconsolidated entities $ 5,555 $ 5,299 $ 14,039 $ 13,038

Inventory

Inventory	9 Months Ended
	Sep. 30, 2021
Inventory Disclosure [Abstract]
Inventory	2. INVENTORY A summary of inventory is as follows (in thousands): September 30, 2021 December 31, 2020 Homes completed or under construction $ 584,538 $ 356,706 Land and lots - developed and under development 581,766 482,371 Land held for sale 3,993 5,558 Total inventory $ 1,170,297 $ 844,635 A summary of interest costs incurred, capitalized and expensed is as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest capitalized at beginning of period $ 18,960 $ 18,791 $ 17,520 $ 18,596 Interest incurred 3,597 2,010 9,698 7,677 Interest charged to cost of revenues (2,797) (2,999) (7,458) (8,471) Interest capitalized at end of period $ 19,760 $ 17,802 $ 19,760 $ 17,802 Capitalized interest as a percentage of inventory 1.7 % 2.3 % As of September 30, 2021, the Company reviewed the performance and outlook for all of its communities for indicators of potential impairment and performed detailed impairment analysis when necessary. As of September 30, 2021, the Company did not identify any selling communities with indicators of impairment. For the three and nine months ended September 30, 2021, the Company did not record an impairment adjustment to reduce the carrying value of impaired communities to fair value. For the three and nine months ended September 30, 2020, the Company recorded a $0.0 million and a de minimis impairment adjustment, respectively, to reduce the carrying value of impaired communities to fair value.

Debt

Debt	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Debt Disclosure	4. DEBT Lines of Credit Borrowings on lines of credit outstanding, net of debt issuance costs, as of September 30, 2021 and December 31, 2020 consisted of the following (in thousands): September 30, 2021 December 31, 2020 Secured Revolving Credit Facility $ 19,000 $ 7,000 Unsecured Revolving Credit Facility 105,000 101,000 Debt issuance costs, net of amortization (1,283) (1,313) Total borrowings on lines of credit, net $ 122,717 $ 106,687 Secured Revolving Credit Facility The Company is party to a revolving credit facility (the “Secured Revolving Credit Facility”) with Inwood National Bank, which provides for an aggregate commitment amount of $35.0 million. On May 22, 2020, the Company amended the Secured Revolving Credit Facility to reduce the aggregate commitment amount of $75.0 million to $35.0 million. Amounts outstanding under the Secured Revolving Credit Facility are secured by mortgages on real property and security interests in certain personal property (to the extent that such personal property is connected with the use and enjoyment of the real property) that is owned by certain of the Company’s subsidiaries. The entire unpaid principal balance and any accrued but unpaid interest is due and payable on the maturity date. As of September 30, 2021, the maturity date of the Secured Revolving Credit Facility is May 1, 2022. As of September 30, 2021, there were letters of credit outstanding totaling $1.4 million and a net available commitment amount of $33.6 million. As of September 30, 2021, the interest rate on outstanding borrowings under the Secured Revolving Credit Facility was 4.00% per annum. Unsecured Revolving Credit Facility The Company is party to a credit agreement, providing for a senior, unsecured revolving credit facility (the “Unsecured Revolving Credit Facility”). The Unsecured Revolving Credit Facility provides for maximum aggregate lending commitments of up to $275.0 million of which the Company has secured outstanding commitments of $265.0 million. Following amendments to the Unsecured Revolving Credit Facility to replace Credit Suisse AG, Cayman Islands Branch (“Credit Suisse”) with Veritex Community Bank (“Veritex”) as lender, the termination date with respect to commitments under the Unsecured Revolving Credit Facility is December 14, 2022 for $75.0 million and December 14, 2023 for $190.0 million out of aggregate lending commitments of $265.0 million. The Company incurred fees and other debt issuance costs of $0.3 million associated with the amendments. These costs were deferred and reduce the carrying amount of debt on our consolidated balance sheet. As of September 30, 2021, the interest rates on outstanding borrowings under the Unsecured Revolving Credit Facility ranged from 2.58% to 2.59% per annum. Senior Unsecured Notes On August 8, 2019, the Company entered into a Note Purchase Agreement with Prudential Private Capital to issue $75.0 million aggregate principal amount of senior unsecured notes (the “2026 Notes”) due on August 8, 2026 at a fixed rate of 4.00% per annum in a Section 4(a)(2) private placement transaction. The Company received net proceeds of $73.3 million and incurred debt issuance costs of approximately $1.7 million that were deferred and reduced the amount of debt on our condensed balance sheet. The Company used the net proceeds from the issuance of the 2026 Notes to repay borrowings under the Company’s existing revolving credit facilities. Principal on the 2026 Notes is required to be paid in increments of $12.5 million on August 8, 2024 and $12.5 million on August 8, 2025. The final principal payment of $50.0 million is due on August 8, 2026. Optional prepayment is allowed with payment of a “make-whole” penalty which fluctuates depending on market interest rates. Interest is payable quarterly in arrears commencing November 8, 2019. On August 26, 2020, the Company entered into a Note Purchase Agreement with The Prudential Insurance Company of America and Prudential Universal Reinsurance Company to issue $37.5 million aggregate principal amount of senior unsecured notes (the “2027 Notes”) due on August 26, 2027 at a fixed rate of 3.35% per annum in a Section 4(a)(2) private placement transaction. The Company received net proceeds of $37.4 million and incurred debt issuance costs of approximately $0.1 million that were deferred and reduced the amount of debt on our condensed consolidated balance sheet. The Company used the net proceeds from the issuance of the 2027 Notes to repay borrowings under the Company’s existing revolving credit facilities and for general corporate purposes. Optional prepayment is allowed with payment of a “make-whole” penalty which fluctuates depending on market interest rates. Interest is payable quarterly in arrears commencing on November 26, 2020. On February 25, 2021, the Company entered into a Note Purchase Agreement with several purchasers to issue $125.0 million aggregate principal amount of senior unsecured notes (the “2028 Notes”) due on May 25, 2028 at a fixed rate of 3.25% per annum in a Section 4(a)(2) private placement transaction. The Company received net proceeds of $124.4 million and incurred debt issuance costs of approximately $0.6 million that were deferred and reduced the amount of debt on our condensed consolidated balance sheet. The Company used the net proceeds from the issuance of the 2028 Notes to repay borrowings under the Company’s existing revolving credit facilities and for general corporate purposes. Principal on the 2028 Notes is due in increments of $25.0 million on February 25, 2024; $25.0 million on February 25, 2025; $25.0 million on February 25, 2026; $25.0 million on February 25, 2027 and $25.0 million on February 25, 2028. Optional prepayment is allowed with payment of a “make-whole” penalty which fluctuates depending on market interest rates. Interest is payable quarterly in arrears commencing on May 25, 2021.

Business Combination

Business Combination	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Business Combination	The Company has a noncontrolling interest attributable to the 20% minority interest in GRBK GHO Homes, LLC (“GRBK GHO”) owned by our Florida-based partner that is included as redeemable noncontrolling interest in equity of consolidated subsidiary in the Company’s condensed consolidated financial statements. The following tables show the changes in redeemable noncontrolling interest in equity of consolidated subsidiary during the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, 2021 2020 Redeemable noncontrolling interest, beginning of period $ 17,515 $ 12,485 Net income attributable to redeemable noncontrolling interest partner 623 501 Distributions of income to redeemable noncontrolling interest partner — — Change in fair value of redeemable noncontrolling interest (732) 638 Redeemable noncontrolling interest, end of period $ 17,406 $ 13,624 Nine Months Ended September 30, 2021 2020 Redeemable noncontrolling interest, beginning of period $ 13,543 $ 13,611 Net income attributable to redeemable noncontrolling interest partner 1,694 1,743 Distributions of income to redeemable noncontrolling interest partner (106) (1,505) Change in fair value of redeemable noncontrolling interest 2,275 (225) Redeemable noncontrolling interest, end of period $ 17,406 $ 13,624 Contingent Consideration Under the terms of the purchase agreement, the Company was obligated to pay contingent consideration to our partner if certain annual performance targets were met over the three-year period following the Acquisition Date. The performance targets specified in the purchase agreement were met for the period from January 1, 2020 through December 31, 2020, and contingent consideration of $0.4 million was earned by the minority partner and paid by the Company in April 2021 in addition to a $0.1 million distribution of income. The performance targets were not met for the period from January 1, 2021 through April 26, 2021. The contingent consideration period expired April 26, 2021.

Equity

Equity	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
Stockholders' Equity Note Disclosure	6. STOCKHOLDERS’ EQUITY 2021 Share Repurchase Program On March 1, 2021, the Company’s Board of Directors (the “Board”) authorized a new $50.0 million stock repurchase program (the “Repurchase Plan”). The Repurchase Plan authorizes the Company to purchase from time to time on or prior to December 31, 2022, up to $50.0 million of our outstanding common stock through open market repurchases in compliance with Rule 10b-18 under the Exchange Act and/or in privately negotiated transactions at management’s discretion based on market and business conditions, applicable legal requirements and other factors. Shares repurchased will be retired. The Repurchase Plan may be modified or terminated by our Board at any time in its sole discretion.

Compensation Related Costs, Sha

Compensation Related Costs, Share Based Payments	3 Months Ended
	Sep. 30, 2020
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement	SHARE-BASED COMPENSATION Share-Based Award Activity During the nine months ended September 30, 2021, the Company granted stock awards (“SAs”) under its 2014 Omnibus Equity Incentive Plan to executive officers (“EOs”) and restricted stock awards (“RSAs”) to non-employee members of the Board of Directors (“BOD”). The SAs granted to the EOs were 100% vested and non-forfeitable on the grant date. Some members of the BOD also elected to defer up to 100% of their annual retainer fee in the form of RSAs. The RSAs granted to the BOD will become fully vested on the earlier of (i) the first anniversary of the date of grant of the shares of restricted common stock or (ii) the date of the Company’s 2022 Annual Meeting of Stockholders. The fair value of the SAs granted to EOs and RSAs granted to non-employee members of the BOD were recorded as share-based compensation expense on the grant date and over the vesting period, respectively. The Company withheld 41,318 shares of common stock from EOs, at a total cost of $0.8 million, to satisfy statutory minimum tax requirements upon grant of the SAs. Employee Stock Awards On March 1, 2021, the Company’s Board of Directors approved an incentive program for eligible employees to participate in the Company’s new restricted stock award plan. This plan is being offered pursuant to the Company’s 2014 Omnibus Equity Incentive Plan. The Company incurred de minimis and $0.1 million compensation expense related to these awards during the three and nine months ended September 30, 2021, respectively. A summary of share-based awards activity during the nine months ended September 30, 2021 is as follows: Number of Shares Weighted Average Grant Date Fair Value per Share (in thousands) Nonvested, December 31, 2020 45 $ 12.33 Granted 139 $ 22.10 Vested (157) $ 19.09 Forfeited — $ — Nonvested, September 30, 2021 28 $ 23.21 Stock Options A summary of stock options activity during the nine months ended September 30, 2021 is as follows: Number of Shares Weighted Average Exercise Price per Share Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (in thousands) (in years) (in thousands) Options outstanding, December 31, 2020 500 $ 7.49 Granted — Exercised — — Forfeited — — Options outstanding, September 30, 2021 500 $ 7.49 3.07 $ 6,515 Options exercisable, September 30, 2021 500 $ 7.49 3.07 $ 6,515 Share-Based Compensation Expense Share-based compensation expense was $0.2 million and $0.1 million for the three months ended September 30, 2021 and 2020, respectively. Recognized tax benefit related to share-based compensation expense was de minimis for the three months ended September 30, 2021 and 2020. Share-based compensation expense was $2.9 million and $2.0 million for the nine months ended September 30, 2021 and 2020, respectively. Recognized tax benefit related to share-based compensation expense was $0.6 million and $0.4 million for the nine months ended September 30, 2021 and 2020, respectively.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Segment Information	SEGMENT INFORMATION Financial information relating to the Company’s reportable segments is as follows. Operational results of each reportable segment are not necessarily indicative of the results that would have been achieved had the reportable segment been an independent, stand-alone entity during the periods presented. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2021 2020 2021 2020 Revenues: (1) Builder operations Central $ 244,747 $ 191,749 $ 637,448 $ 467,409 Southeast 94,298 72,293 280,640 217,111 Total builder operations 339,045 264,042 918,088 684,520 Land development 3,295 11,779 32,537 37,401 Total revenues $ 342,340 $ 275,821 $ 950,625 $ 721,921 Gross profit: Builder operations Central $ 72,071 $ 52,616 $ 184,104 $ 122,561 Southeast 25,580 19,586 78,922 58,173 Total builder operations 97,651 72,202 263,026 180,734 Land development 812 2,661 8,116 9,436 Corporate, other and unallocated (2) (7,127) (6,977) (19,841) (19,420) Total gross profit $ 91,336 $ 67,886 $ 251,301 $ 170,750 Income before income taxes: Builder operations Central $ 47,753 $ 32,621 $ 116,971 $ 69,626 Southeast 15,360 10,964 49,769 31,677 Total builder operations 63,113 43,585 166,740 101,303 Land development 608 2,540 7,737 8,627 Corporate, other and unallocated (3) 1,437 (202) (80) (5,066) Income before income taxes $ 65,158 $ 45,923 $ 174,397 $ 104,864 September 30, 2021 December 31, 2020 Inventory: Builder operations Central $ 507,850 $ 421,477 Southeast 263,268 183,623 Total builder operations 771,118 605,100 Land development 366,566 213,555 Corporate, other and unallocated (4) 32,613 25,980 Total inventory $ 1,170,297 $ 844,635 Goodwill: Builder operations - Southeast $ 680 $ 680 (1) The sum of Builder operations Central and Southeast segments’ revenues does not equal residential units revenue included in the condensed consolidated statements of income in periods when our builders have revenues from land or lot closings, which for the three and nine months ended September 30, 2021 were $0.1 million and $28.5 million, respectively, compared to $0.2 million and $0.8 million for the three and nine months ended September 30, 2020, respectively. (2) Corporate, other and unallocated gross loss is comprised of capitalized overhead and capitalized interest adjustments that are not allocated to builder operations and land development segments. (3) Corporate, other and unallocated income (loss) before income taxes includes results from Green Brick Title, LLC and investments in unconsolidated subsidiaries, in addition to capitalized cost adjustments that are not allocated to operating segments. (4) Corporate, other and unallocated inventory consists of capitalized overhead and interest related to work in process and land under development.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
Income Tax Disclosure [Abstract]
Income Tax Disclosure	10. INCOME TAXESThe Company’s income tax expense for the three and nine months ended September 30, 2021 was $13.9 million and $37.1 million, respectively, compared to $10.0 million and $17.4 million in the prior year periods. The effective tax rate was 21.3% and 21.3% for the three and nine months ended September 30, 2021, respectively, compared to 21.7% and 16.6% in the comparable prior year periods. The change in the effective tax rate for the three and nine months ended September 30, 2021 relates primarily to the impact of projected noncontrolling interest for the year and a tax benefit from the enactment of the Taxpayer Certainty and Disaster Tax Relief Act of 2019 (“the 2019 Act”). The 2019 Act retroactively reinstated the federal energy efficient homes tax credit that expired on December 31, 2017 to homes closed from January 1, 2018 to December 31, 2020. In December 2020, Congress approved the Taxpayer Certainty and Disaster Tax Relief Act of 2020, which extended the federal energy efficient homes tax credit through December 31, 2021.

Net Income Attributable to Gree

Net Income Attributable to Green Brick Partners, Inc. Per Share	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Net Income Attributable to Green Brick Partners, Inc. Per Share	EARNINGS PER SHARE The Company’s RSAs have the right to receive forfeitable dividends on an equal basis with common stock and therefore are not considered participating securities that must be included in the calculation of net income per share using the two-class method. Basic earnings per share is computed by dividing net income by the weighted average number of common shares outstanding during each period, adjusted for nonvested shares of RSAs during each period. Diluted earnings per share is calculated using the treasury stock method and includes the effect of all dilutive securities, including stock options and RSAs. The computation of basic and diluted net income attributable to Green Brick Partners, Inc. per share is as follows (in thousands, except per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Net income attributable to Green Brick Partners, Inc. $ 48,507 $ 34,819 $ 126,739 $ 84,383 Weighted-average number of shares outstanding - basic 50,732 50,617 50,689 50,552 Basic net income attributable to Green Brick Partners, Inc. per share $ 0.96 $ 0.69 $ 2.50 $ 1.67 Weighted-average number of shares outstanding - basic 50,732 50,617 50,689 50,552 Dilutive effect of stock options and restricted stock awards 347 259 357 187 Weighted-average number of shares outstanding - diluted 51,079 50,876 51,046 50,739 Diluted net income attributable to Green Brick Partners, Inc. per share $ 0.95 $ 0.68 $ 2.48 $ 1.66 The following shares which could potentially dilute earnings per share in the future are not included in the determination of diluted net income attributable to Green Brick Partners, Inc. per common share (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Antidilutive options to purchase common stock and restricted stock awards — — — 4

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2021USD ($)
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS Fair Value of Financial Instruments The Company’s financial instruments, none of which are held for trading purposes, include cash and cash equivalents, restricted cash, receivables, earnest money deposits, other assets, accounts payable, accrued expenses, customer and builder deposits, borrowings on lines of credit, senior unsecured notes, and contingent consideration liability. Per the fair value hierarchy, level 1 financial instruments include: cash and cash equivalents, restricted cash, receivables, earnest money deposits, other assets, accounts payable, accrued expenses, and customer and builder deposits due to their short-term nature. The Company estimates that, due to the short-term nature of the underlying financial instruments or the proximity of the underlying transaction to the applicable reporting date, the fair value of level 1 financial instruments does not differ materially from the aggregate carrying values recorded in the condensed consolidated financial statements as of September 30, 2021 and December 31, 2020. Level 2 financial instruments include borrowings on lines of credit and senior unsecured notes. Due to the short-term nature and floating interest rate terms, the carrying amounts of borrowings on lines of credit are deemed to approximate fair value. The estimated fair value of the senior unsecured notes as of September 30, 2021 was $258.3 million. The carrying value of senior unsecured notes as of September 30, 2021 was $237.5 million. There were no transfers between the levels of the fair value hierarchy for any of our financial instruments during the three and nine months ended September 30, 2021. Fair Value of Nonfinancial Instruments Nonfinancial assets and liabilities include inventory which is measured at cost unless the carrying value is determined to be not recoverable in which case the affected instrument is written down to fair value. The fair value of inventory is primarily determined by discounting the estimated future cash flow of each community using various unobservable inputs in our impairment analysis. Per the fair value hierarchy, these items are level 3 nonfinancial instruments. For additional information on the Company’s inventory, refer to Note 2.
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	$ 0

Related Party Disclosures

Related Party Disclosures	9 Months Ended
	Sep. 30, 2021
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS During the three and nine months ended September 30, 2021 and 2020, the Company had the following related party transactions in the normal course of business. Corporate Officers Trevor Brickman, the son of Green Brick’s Chief Executive Officer, is the President of CLH20, LLC (“Centre Living”). Green Brick’s ownership interest in Centre Living is 90% and Trevor Brickman’s ownership interest is 10%. Green Brick has 90% voting control over the operations of Centre Living. As such, 100% of Centre Living’s operations are included within our condensed consolidated financial statements. GRBK GHO GRBK GHO leases office space from entities affiliated with the president of GRBK GHO. During the three and nine months ended September 30, 2021, GRBK GHO incurred de minimis and $0.1 million rent expense under such lease agreements. As of September 30, 2021, there were no amounts due to the affiliated entities related to such lease agreements. GRBK GHO receives title closing services on the purchase of land and third-party lots from an entity affiliated with the president of GRBK GHO. During the nine months ended September 30, 2021 and 2020, GRBK GHO incurred de minimis fees

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	14. COMMITMENTS AND CONTINGENCIES Letters of Credit and Performance Bonds During the ordinary course of business, certain regulatory agencies and municipalities require the Company to post letters of credit or performance bonds related to development projects. As of September 30, 2021 and December 31, 2020, letters of credit and performance bonds outstanding were $3.8 million and $9.8 million. The Company does not believe that it is likely that any material claims will be made under a letter of credit or performance bond in the foreseeable future. Warranties Warranty accruals are included within accrued expenses on the condensed consolidated balance sheets. Warranty activity during the three and nine months ended September 30, 2021 and 2020 consisted of the following (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Warranty accrual, beginning of period $ 7,902 $ 4,851 $ 6,407 $ 3,840 Warranties issued 1,962 1,137 4,724 2,992 Changes in liability for existing warranties (44) 51 18 (88) Settlements (769) (638) (2,098) (1,343) Warranty accrual, end of period $ 9,051 $ 5,401 $ 9,051 $ 5,401 Operating Leases The Company has leases associated with office and design center space in Georgia, Texas, and Florida that, at the commencement date, have a lease term of more than 12 months and are classified as operating leases. The exercise of any extension options available in such operating lease contracts is not reasonably certain. Operating lease cost of $0.4 million and $1.0 million for the three and nine months ended September 30, 2021, respectively, and $0.3 million and $0.9 million in the prior year periods, is included in selling, general and administrative expenses in the condensed consolidated statements of income. Cash paid for amounts included in the measurement of operating lease liabilities was $0.3 million and $0.9 million, respectively, for the three and nine months ended September 30, 2021 and 2020. As of September 30, 2021, the weighted-average remaining lease term and the weighted-average discount rate used in calculating our lease liabilities were 4.9 years and 4.1%, respectively. The future annual undiscounted cash flows in relation to the operating leases and a reconciliation of such undiscounted cash flows to the operating lease liabilities recognized in the condensed consolidated balance sheet as of September 30, 2021 are presented below (in thousands): Remainder of 2021 $ 361 2022 1,538 2023 1,306 2024 507 2025 517 Thereafter 1,368 Total future lease payments $ 5,597 Less: Interest 544 Present value of lease liabilities $ 5,053 The Company elected the short-term lease recognition exemption for all leases that, at the commencement date, have a lease term of 12 months or less and do not include an option to purchase the underlying asset that the Company is reasonably certain to exercise. For such leases, the Company does not recognize right-of-use assets or lease liabilities and instead recognizes lease payments in the condensed consolidated income statements on a straight-line basis. Short-term lease cost of $0.2 million and $0.5 million for the three and nine months ended September 30, 2021, respectively, and $0.1 million and $0.3 million for the comparable prior year periods, is included in selling, general and administrative expenses in the condensed consolidated statements of income. Legal Matters Lawsuits, claims and proceedings may be instituted or asserted against us in the normal course of business. The Company is also subject to local, state and federal laws and regulations related to land development activities, house construction standards, sales practices, title company regulations, employment practices and environmental protection. As a result, the Company may be subject to periodic examinations or inquiry by agencies administering these laws and regulations. The Company records an accrual for legal claims and regulatory matters when they are probable of occurring and a potential loss is reasonably estimable. The Company accrues for these matters based on facts and circumstances specific to each matter and revises these estimates when necessary. In view of the inherent difficulty of predicting outcomes of legal claims and related contingencies, the Company generally cannot predict their ultimate resolution, related timing or eventual loss. If evaluations indicate loss contingencies that could be material are not probable, but are reasonably possible, the Company will disclose their nature with an estimate of the possible range of losses or a statement that such loss is not reasonably estimable. We believe that the disposition of legal claims and related contingencies will not have a material adverse effect on our results of operations and liquidity or on our financial condition.

Significant Accounting Polici_2

Significant Accounting Policies Changes in Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Accounting [Text Block]	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States generally accepted accounting principles (“GAAP”) as set forth in the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) and applicable regulations of the Securities and Exchange Commission (“SEC”), but do not include all of the information and footnotes required for complete financial statements. The condensed consolidated balance sheet as of December 31, 2020 was derived from the audited consolidated financial statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. In the opinion of management, the accompanying unaudited condensed consolidated financial statements for the periods presented reflect all adjustments of a normal, recurring nature necessary to fairly state our financial position, results of operations and cash flows. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. Operating results for the three and nine months ended September 30, 2021 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2021 or subsequent periods due to seasonal variations and other factors.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of the condensed consolidated financial statements in conformity with GAAP requires management of the Company to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes, including the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenue and expenses during the reporting periods. Actual results could differ from those estimates.

Investment in Unconsolidated _2

Investment in Unconsolidated Entities (Tables)	9 Months Ended
	Sep. 30, 2021
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	A summary of the unaudited condensed financial information of the six unconsolidated entities that are accounted for by the equity method is as follows (in thousands): September 30, 2021 December 31, 2020 Assets: Cash $ 14,852 $ 12,765 Accounts receivable 3,239 1,815 Bonds and notes receivable 5,942 5,942 Loans held for sale, at fair value 38,398 14,530 Inventory 161,710 122,819 Other assets 7,661 8,377 Total assets $ 231,802 $ 166,248 Liabilities: Accounts payable $ 13,477 $ 7,171 Accrued expenses and other liabilities 15,992 11,148 Notes payable 104,326 60,642 Total liabilities $ 133,795 $ 78,961 Owners’ equity: Green Brick $ 50,075 $ 43,451 Others 47,932 43,836 Total owners’ equity $ 98,007 $ 87,287 Total liabilities and owners’ equity $ 231,802 $ 166,248 Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Revenues $ 64,131 $ 50,068 $ 155,589 $ 138,381 Costs and expenses 52,917 39,188 127,276 111,340 Net earnings of unconsolidated entities $ 11,214 $ 10,880 $ 28,313 $ 27,041 Company’s share in net earnings of unconsolidated entities $ 5,555 $ 5,299 $ 14,039 $ 13,038

Inventory (Tables)

Inventory (Tables)	9 Months Ended
	Sep. 30, 2021
Inventory Disclosure [Abstract]
Schedule of Real Estate Inventory	A summary of inventory is as follows (in thousands): September 30, 2021 December 31, 2020 Homes completed or under construction $ 584,538 $ 356,706 Land and lots - developed and under development 581,766 482,371 Land held for sale 3,993 5,558 Total inventory $ 1,170,297 $ 844,635
Summary of Real Estate Inventory Capitalized Interest Costs	A summary of interest costs incurred, capitalized and expensed is as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Interest capitalized at beginning of period $ 18,960 $ 18,791 $ 17,520 $ 18,596 Interest incurred 3,597 2,010 9,698 7,677 Interest charged to cost of revenues (2,797) (2,999) (7,458) (8,471) Interest capitalized at end of period $ 19,760 $ 17,802 $ 19,760 $ 17,802 Capitalized interest as a percentage of inventory 1.7 % 2.3 %

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2021
Debt Disclosure [Abstract]
Schedule of Lines of Credit Outstanding	Lines of Credit Borrowings on lines of credit outstanding, net of debt issuance costs, as of September 30, 2021 and December 31, 2020 consisted of the following (in thousands): September 30, 2021 December 31, 2020 Secured Revolving Credit Facility $ 19,000 $ 7,000 Unsecured Revolving Credit Facility 105,000 101,000 Debt issuance costs, net of amortization (1,283) (1,313) Total borrowings on lines of credit, net $ 122,717 $ 106,687

Business Combination (Tables)

Business Combination (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Redeemable Noncontrolling Interest [Table Text Block]	The following tables show the changes in redeemable noncontrolling interest in equity of consolidated subsidiary during the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, 2021 2020 Redeemable noncontrolling interest, beginning of period $ 17,515 $ 12,485 Net income attributable to redeemable noncontrolling interest partner 623 501 Distributions of income to redeemable noncontrolling interest partner — — Change in fair value of redeemable noncontrolling interest (732) 638 Redeemable noncontrolling interest, end of period $ 17,406 $ 13,624

Compensation Related Costs, S_2

Compensation Related Costs, Share Based Payments (Tables)	9 Months Ended
	Sep. 30, 2021
Share-based Payment Arrangement [Abstract]
Schedule of Share-Based Awards Activity	A summary of share-based awards activity during the nine months ended September 30, 2021 is as follows: Number of Shares Weighted Average Grant Date Fair Value per Share (in thousands) Nonvested, December 31, 2020 45 $ 12.33 Granted 139 $ 22.10 Vested (157) $ 19.09 Forfeited — $ — Nonvested, September 30, 2021 28 $ 23.21

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2021
Segment Reporting [Abstract]
Schedule of Segment Reporting Information	Financial information relating to the Company’s reportable segments is as follows. Operational results of each reportable segment are not necessarily indicative of the results that would have been achieved had the reportable segment been an independent, stand-alone entity during the periods presented. Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2021 2020 2021 2020 Revenues: (1) Builder operations Central $ 244,747 $ 191,749 $ 637,448 $ 467,409 Southeast 94,298 72,293 280,640 217,111 Total builder operations 339,045 264,042 918,088 684,520 Land development 3,295 11,779 32,537 37,401 Total revenues $ 342,340 $ 275,821 $ 950,625 $ 721,921 Gross profit: Builder operations Central $ 72,071 $ 52,616 $ 184,104 $ 122,561 Southeast 25,580 19,586 78,922 58,173 Total builder operations 97,651 72,202 263,026 180,734 Land development 812 2,661 8,116 9,436 Corporate, other and unallocated (2) (7,127) (6,977) (19,841) (19,420) Total gross profit $ 91,336 $ 67,886 $ 251,301 $ 170,750 Income before income taxes: Builder operations Central $ 47,753 $ 32,621 $ 116,971 $ 69,626 Southeast 15,360 10,964 49,769 31,677 Total builder operations 63,113 43,585 166,740 101,303 Land development 608 2,540 7,737 8,627 Corporate, other and unallocated (3) 1,437 (202) (80) (5,066) Income before income taxes $ 65,158 $ 45,923 $ 174,397 $ 104,864 September 30, 2021 December 31, 2020 Inventory: Builder operations Central $ 507,850 $ 421,477 Southeast 263,268 183,623 Total builder operations 771,118 605,100 Land development 366,566 213,555 Corporate, other and unallocated (4) 32,613 25,980 Total inventory $ 1,170,297 $ 844,635 Goodwill: Builder operations - Southeast $ 680 $ 680 (1) The sum of Builder operations Central and Southeast segments’ revenues does not equal residential units revenue included in the condensed consolidated statements of income in periods when our builders have revenues from land or lot closings, which for the three and nine months ended September 30, 2021 were $0.1 million and $28.5 million, respectively, compared to $0.2 million and $0.8 million for the three and nine months ended September 30, 2020, respectively. (2) Corporate, other and unallocated gross loss is comprised of capitalized overhead and capitalized interest adjustments that are not allocated to builder operations and land development segments. (3) Corporate, other and unallocated income (loss) before income taxes includes results from Green Brick Title, LLC and investments in unconsolidated subsidiaries, in addition to capitalized cost adjustments that are not allocated to operating segments. (4) Corporate, other and unallocated inventory consists of capitalized overhead and interest related to work in process and land under development.

Net Income Attributable to Gr_2

Net Income Attributable to Green Brick Partners, Inc. Per Share (Tables)	9 Months Ended
	Sep. 30, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The computation of basic and diluted net income attributable to Green Brick Partners, Inc. per share is as follows (in thousands, except per share amounts): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Net income attributable to Green Brick Partners, Inc. $ 48,507 $ 34,819 $ 126,739 $ 84,383 Weighted-average number of shares outstanding - basic 50,732 50,617 50,689 50,552 Basic net income attributable to Green Brick Partners, Inc. per share $ 0.96 $ 0.69 $ 2.50 $ 1.67 Weighted-average number of shares outstanding - basic 50,732 50,617 50,689 50,552 Dilutive effect of stock options and restricted stock awards 347 259 357 187 Weighted-average number of shares outstanding - diluted 51,079 50,876 51,046 50,739 Diluted net income attributable to Green Brick Partners, Inc. per share $ 0.95 $ 0.68 $ 2.48 $ 1.66
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share	The following shares which could potentially dilute earnings per share in the future are not included in the determination of diluted net income attributable to Green Brick Partners, Inc. per common share (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Antidilutive options to purchase common stock and restricted stock awards — — — 4

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Warranty Activity	Warranty activity during the three and nine months ended September 30, 2021 and 2020 consisted of the following (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Warranty accrual, beginning of period $ 7,902 $ 4,851 $ 6,407 $ 3,840 Warranties issued 1,962 1,137 4,724 2,992 Changes in liability for existing warranties (44) 51 18 (88) Settlements (769) (638) (2,098) (1,343) Warranty accrual, end of period $ 9,051 $ 5,401 $ 9,051 $ 5,401
Lessee, Operating Lease, Liability, Maturity	The future annual undiscounted cash flows in relation to the operating leases and a reconciliation of such undiscounted cash flows to the operating lease liabilities recognized in the condensed consolidated balance sheet as of September 30, 2021 are presented below (in thousands): Remainder of 2021 $ 361 2022 1,538 2023 1,306 2024 507 2025 517 Thereafter 1,368 Total future lease payments $ 5,597 Less: Interest 544 Present value of lease liabilities $ 5,053

Significant Accounting Polici_3

Significant Accounting Policies Leases, Adoption of ASC 842 (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Operating Lease, Liability	$ 5,053	$ 2,591
Operating Lease, Right-of-Use Asset	$ 5,023	$ 2,538

Investment in Unconsolidated _3

Investment in Unconsolidated Entities (Summary of Financial Information of Investment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Income Statement [Abstract]
Company’s share in net earnings of unconsolidated entities	$ 5,555	$ 5,299	$ 14,039	$ 13,038
Assets	1,347,316		1,347,316			$ 988,847
Liabilities	546,689		546,689			325,895
Stockholders' Equity Attributable to Parent	766,789	610,079	766,789	610,079	$ 717,389	640,242	$ 575,759	$ 523,168
Stockholders' Equity Attributable to Noncontrolling Interest	16,432	8,820	16,432	8,820	14,302	9,167	8,186	13,227
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	783,221	618,899	783,221	618,899	731,691	649,409	583,945	536,395
Liabilities and Equity	1,347,316		1,347,316			988,847
Total revenues	342,340	275,821	950,625	721,921
Net income	51,260	35,954	137,304	87,507
Cash		40,269		40,269				33,269
Schedule of Equity Method Investments [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest	16,432	8,820	16,432	8,820	14,302	9,167	8,186	13,227
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	783,221	618,899	783,221	618,899	731,691	649,409	583,945	536,395
Total revenues	342,340	275,821	950,625	721,921
Net income	51,260	35,954	137,304	87,507
Equity in income of unconsolidated entities	5,555	5,299	14,039	13,038
Assets	1,347,316		1,347,316			988,847
Cash		40,269		40,269				33,269
Liabilities	546,689		546,689			325,895
Stockholders' Equity Attributable to Parent	766,789	610,079	766,789	610,079	$ 717,389	640,242	$ 575,759	$ 523,168
Liabilities and Equity	1,347,316		1,347,316			988,847
Equity Method Investment, Nonconsolidated Investee or Group of Investees
Income Statement [Abstract]
Company’s share in net earnings of unconsolidated entities	5,555	5,299	14,039	13,038
Assets	231,802		231,802			166,248
Liabilities	133,795		133,795			78,961
Stockholders' Equity Attributable to Parent	50,075		50,075			43,451
Stockholders' Equity Attributable to Noncontrolling Interest	47,932		47,932			43,836
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	98,007		98,007			87,287
Liabilities and Equity	231,802		231,802			166,248
Total revenues	64,131	50,068	155,589	138,381
Net income	11,214	10,880	28,313	27,041
Cash	14,852		14,852			12,765
Schedule of Equity Method Investments [Line Items]
Stockholders' Equity Attributable to Noncontrolling Interest	47,932		47,932			43,836
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	98,007		98,007			87,287
Total revenues	64,131	50,068	155,589	138,381
Net income	11,214	10,880	28,313	27,041
Equity in income of unconsolidated entities	5,555	5,299	14,039	13,038
Accounts and Other Receivables, Net, Current	3,239		3,239			1,815
Financing Receivable, after Allowance for Credit Loss	5,942		5,942			5,942
Financing Receivable, Held-for-Sale	38,398		38,398			14,530
Inventory, Net	161,710		161,710			122,819
Other Assets, Current	7,661		7,661			8,377
Accounts Payable, Current	13,477		13,477			7,171
Accrued Liabilities, Current	15,992		15,992			11,148
Notes Payable, Current	104,326		104,326			60,642
Costs and Expenses	52,917	$ 39,188	127,276	$ 111,340
Assets	231,802		231,802			166,248
Cash	14,852		14,852			12,765
Liabilities	133,795		133,795			78,961
Stockholders' Equity Attributable to Parent	50,075		50,075			43,451
Liabilities and Equity	$ 231,802		$ 231,802			$ 166,248

Investment in Unconsolidated _4

Investment in Unconsolidated Entities (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Equity Method Investments and Joint Ventures [Abstract]
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01		$ 0.01
Goodwill	$ 680		$ 680		$ 680
Investments in unconsolidated entities	52,735		52,735		$ 46,443
Equity in income of unconsolidated entity	$ 5,555	$ 5,299	$ 14,039	$ 13,038

Investment in Unconsolidated _5

Investment in Unconsolidated Entities (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	$ 5,555	$ 5,299	$ 14,039	$ 13,038
Investments in unconsolidated entities	52,735		52,735		$ 46,443
GB Challenger, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	4,377	3,825	10,352	9,391
Investments in unconsolidated entities	35,196		35,196		29,488
Green Brick Mortgage, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	382	1,498	2,015	3,658
Investments in unconsolidated entities	765		765		1,207
EJB River Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	361		833	(1)
Investments in unconsolidated entities	6,130		6,130		5,296
GBTM Sendera, LLC
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated entities	9,854		9,854		9,846
BHome Mortgage, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	435	(24)	839	(24)
Investments in unconsolidated entities	790		790		$ 606
Equity Method Investments
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities	$ 5,555	$ 5,299	$ 14,039	13,038
Providence Group Title, LLC
Schedule of Equity Method Investments [Line Items]
Equity in income of unconsolidated entities				$ 14

Inventory (Details)

Inventory (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Inventory Disclosure [Abstract]
Finished Homes and Homes under Construction	$ 584,538,000		$ 356,706,000
Inventory, Real Estate, Land and Land Development Costs	581,766,000		482,371,000
Inventory, Land Held-for-sale	3,993,000		5,558,000
Total inventory	$ 1,170,297,000		$ 844,635,000
Document Period End Date	Sep. 30, 2021
Earnest Money Deposits and Pre-acquisition Costs Written-Off	$ 210,000	$ 1,490,000
Impairment of Real Estate		$ 0

Inventory (Capitalization of In

Inventory (Capitalization of Interest) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Real Estate Inventory, Capitalized Interest Costs [Roll Forward]
Interest capitalized at beginning of period	$ 18,960	$ 18,791	$ 17,520	$ 18,596
Interest incurred	3,597	2,010	9,698	7,677
Interest charged to cost of revenues	(2,797)	(2,999)	(7,458)	(8,471)
Interest capitalized at end of period	$ 19,760	$ 17,802	$ 19,760	$ 17,802
Document Period End Date			Sep. 30, 2021
Capitalized interest as a percentage of inventory	1.70%	2.30%

Debt (Schedule of Lines of Cred

Debt (Schedule of Lines of Credit Outstanding) (Details) - USD ($)	Feb. 25, 2021	Aug. 26, 2020	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	May 22, 2020	Dec. 15, 2015	Jul. 30, 2015
Line of Credit Facility [Line Items]
Document Period End Date				Sep. 30, 2021
Long-term Line of Credit				$ 122,717,000		$ 106,687,000
Debt issuance costs, net of amortization				(1,283,000)		(1,313,000)
Letters of Credit Outstanding, Amount				3,800,000		9,800,000
Line of Credit Facility, Remaining Borrowing Capacity				33,600,000
Payments of Debt Issuance Costs	$ 600,000	$ 0.1	$ 300,000	894,000	$ 62,000
Unsecured Debt [Member]
Line of Credit Facility [Line Items]
Long-term Line of Credit								$ 265,000,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Long-term Line of Credit				19,000,000		7,000,000
Line of Credit Facility, Maximum Borrowing Capacity				35,000,000			$ 75	$ 275,000,000	$ 35,000,000
Letters of Credit Outstanding, Amount				1,400,000
Unsecured Debt [Member]
Line of Credit Facility [Line Items]
Long-term Line of Credit				$ 105,000,000		$ 101,000,000

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($)	Feb. 25, 2021	Aug. 26, 2020	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Aug. 08, 2026	Aug. 08, 2025	Aug. 08, 2024	Dec. 31, 2020	May 22, 2020	Aug. 08, 2019	Dec. 15, 2015	Jul. 30, 2015
Debt Instrument [Line Items]
Document Period End Date					Sep. 30, 2021
Debt Instrument, Interest Rate, Stated Percentage	3.25%											4.00%
Proceeds from Issuance of Senior Long-term Debt					$ 125,000,000	$ 37,500,000
Payments of Debt Issuance Costs	$ 600,000	$ 0.1		$ 300,000	894,000	$ 62,000
Costs associated with amendment			$ 1,283,000		1,283,000					$ 1,313,000
Borrowings on lines of credit			122,717,000		122,717,000					106,687,000
Line of Credit Facility, Remaining Borrowing Capacity			33,600,000		33,600,000
Senior Notes			235,737,000		235,737,000					111,056,000
Letters of Credit Outstanding, Amount			3,800,000		$ 3,800,000					9,800,000
Proceeds from Unsecured Notes Payable			$ 37.4	$ 124,400,000
Unsecured Debt	$ 125,000,000	$ 37,500,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Borrowings on lines of credit													$ 265,000,000
Unsecured Debt [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End			2.58%		2.58%
Unsecured Debt [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End			2.59%		2.59%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 35,000,000		$ 35,000,000						$ 75		$ 275,000,000	$ 35,000,000
Borrowings on lines of credit			$ 19,000,000		$ 19,000,000					$ 7,000,000
Line of Credit Facility, Interest Rate at Period End			4.00%		4.00%
Letters of Credit Outstanding, Amount			$ 1,400,000		$ 1,400,000
Forecast [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five							$ 50,000,000	$ 12,500,000	$ 12,500,000

Business Combination (Narrative

Business Combination (Narrative) (Details) - USD ($)	3 Months Ended				9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Assets acquired
Goodwill	$ 680,000				$ 680,000		$ 680,000
Liabilities assumed
Homebuilding revenues	342,340,000			$ 275,821,000	950,625,000	$ 721,921,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	65,158,000			45,923,000	174,397,000	104,864,000
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	623,000			501,000	1,694,000	1,743,000
Temporary Equity, Accretion to Redemption Value					(2,275,000)	(225,000)
Payment for Contingent Consideration Liability, Operating Activities					(368,000)	(5,267,000)
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	17,406,000			13,624,000	17,406,000	13,624,000	$ 13,543,000	$ 17,515,000	$ 13,611,000	$ 12,485,000
Payments for Repurchase of Redeemable Noncontrolling Interest	0			0	(106,000)	$ (1,505,000)
Noncontrolling Interest, Change in Redemption Value	$ (732,000)			$ (638,000)	$ 2,275,000
Contingent Consideration Earned			$ 0.4
Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid		$ 0.1
GHO Homes [Member]
Liabilities assumed
Ownership percentage by noncontrolling owners	20.00%				20.00%

Equity (Details)

Equity (Details)	Mar. 01, 2021USD ($)
Equity [Abstract]
Stock Repurchase Program, Authorized Amount	$ 50,000,000

Compensation Related Costs, S_3

Compensation Related Costs, Share Based Payments (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Share-based Payment Arrangement [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 23.21		$ 23.21		$ 12.33
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	28,000		28,000		45,000
Granted (in dollars per share)			$ 22.10
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			41,318	75,708
Share-based compensation expense	$ 200	$ 100	$ 2,917	$ 1,958
Share-based Payment Arrangement, Expense, Tax Benefit			600	400
Compensation cost not yet recognized	400		$ 400
Period for recognition			8 months 12 days
Percentage of awards vested and forfeitable at time of grant			100.00%
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 834	592
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			157,000
Vested (in dollars per share)			$ 19.09
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			0
Forfeited (in dollars per share)			$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			139,000
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 834	592
Document Period End Date			Sep. 30, 2021
Percentage of awards vested and forfeitable at time of grant			100.00%
Share-based compensation expense	$ 200	$ 100	$ 2,917	1,958
Document Period End Date			Sep. 30, 2021
Common Stock [Member]
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ (1)	(1)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			(1)	(1)
Additional Paid-in Capital [Member]
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			833	(591)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 833	$ (591)

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue			The following reflects the disaggregation of revenue by primary geographic market, type of customer, product type, and timing of revenue recognition for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, 2021 Three Months Ended September 30, 2020 Residential units revenue Land and lots revenue Residential units revenue Land and lots revenue Primary Geographical Market Central $ 244,603 $ 3,440 $ 191,634 $ 11,894 Southeast 94,297 — 72,251 42 Total revenues $ 338,900 $ 3,440 $ 263,885 $ 11,936 Type of Customer Homebuyers $ 338,900 $ — $ 263,885 $ — Homebuilders and Multi-family Developers — 3,440 — 11,936 Total revenues $ 338,900 $ 3,440 $ 263,885 $ 11,936 Product Type Residential units $ 338,900 $ — $ 263,885 $ — Land and lots — 3,440 — 11,936 Total revenues $ 338,900 $ 3,440 $ 263,885 $ 11,936 Timing of Revenue Recognition Transferred at a point in time $ 338,075 $ 3,440 $ 262,319 $ 11,936 Transferred over time 825 — 1,566 — Total revenues $ 338,900 $ 3,440 $ 263,885 $ 11,936 Nine Months Ended September 30, 2021 Nine Months Ended September 30, 2020 Residential units revenue Land and lots revenue Residential units revenue Land and lots revenue Primary Geographical Market Central $ 635,573 $ 34,413 $ 466,910 $ 37,900 Southeast 254,063 26,576 216,829 282 Total revenues $ 889,636 $ 60,989 $ 683,739 $ 38,182 Type of Customer Homebuyers $ 889,636 $ — $ 683,739 $ — Homebuilders and Multi-family Developers — 60,989 — 38,182 Total revenues $ 889,636 $ 60,989 $ 683,739 $ 38,182 Product Type Residential units $ 889,636 $ — $ 683,739 $ — Land and lots — 60,989 — 38,182 Total revenues $ 889,636 $ 60,989 $ 683,739 $ 38,182 Timing of Revenue Recognition Transferred at a point in time $ 886,488 $ 60,989 $ 678,352 $ 38,182 Transferred over time 3,148 — 5,387 — Total revenues $ 889,636 $ 60,989 $ 683,739 $ 38,182 Revenue recognized over time represents revenue from mechanic’s lien contracts.
Opening and Closing Contract Balances Included in Customer and Builder Deposits on Balance Sheet and Deposits Recognized as Revenue			Opening and closing contract balances included in customer and builder deposits on the condensed consolidated balance sheets are as follows (in thousands): September 30, 2021 December 31, 2020 Customer and builder deposits $ 70,079 $ 38,131 The amount of deposits on residential units and land and lots held as of the beginning of the period and recognized as revenue during the three and nine months ended September 30, 2021 and 2020 are as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Type of Customer Homebuyers $ 14,839 $ 6,098 $ 24,120 $ 16,147 Homebuilders and Multi-Family Developers 815 1,135 1,982 5,415 Total deposits recognized as revenue $ 15,654 $ 7,233 $ 26,102 $ 21,562
Revenue Recognition			REVENUE RECOGNITION Disaggregation of Revenue The following reflects the disaggregation of revenue by primary geographic market, type of customer, product type, and timing of revenue recognition for the three and nine months ended September 30, 2021 and 2020 (in thousands): Three Months Ended September 30, 2021 Three Months Ended September 30, 2020 Residential units revenue Land and lots revenue Residential units revenue Land and lots revenue Primary Geographical Market Central $ 244,603 $ 3,440 $ 191,634 $ 11,894 Southeast 94,297 — 72,251 42 Total revenues $ 338,900 $ 3,440 $ 263,885 $ 11,936 Type of Customer Homebuyers $ 338,900 $ — $ 263,885 $ — Homebuilders and Multi-family Developers — 3,440 — 11,936 Total revenues $ 338,900 $ 3,440 $ 263,885 $ 11,936 Product Type Residential units $ 338,900 $ — $ 263,885 $ — Land and lots — 3,440 — 11,936 Total revenues $ 338,900 $ 3,440 $ 263,885 $ 11,936 Timing of Revenue Recognition Transferred at a point in time $ 338,075 $ 3,440 $ 262,319 $ 11,936 Transferred over time 825 — 1,566 — Total revenues $ 338,900 $ 3,440 $ 263,885 $ 11,936 Nine Months Ended September 30, 2021 Nine Months Ended September 30, 2020 Residential units revenue Land and lots revenue Residential units revenue Land and lots revenue Primary Geographical Market Central $ 635,573 $ 34,413 $ 466,910 $ 37,900 Southeast 254,063 26,576 216,829 282 Total revenues $ 889,636 $ 60,989 $ 683,739 $ 38,182 Type of Customer Homebuyers $ 889,636 $ — $ 683,739 $ — Homebuilders and Multi-family Developers — 60,989 — 38,182 Total revenues $ 889,636 $ 60,989 $ 683,739 $ 38,182 Product Type Residential units $ 889,636 $ — $ 683,739 $ — Land and lots — 60,989 — 38,182 Total revenues $ 889,636 $ 60,989 $ 683,739 $ 38,182 Timing of Revenue Recognition Transferred at a point in time $ 886,488 $ 60,989 $ 678,352 $ 38,182 Transferred over time 3,148 — 5,387 — Total revenues $ 889,636 $ 60,989 $ 683,739 $ 38,182 Revenue recognized over time represents revenue from mechanic’s lien contracts. Contract Balances Opening and closing contract balances included in customer and builder deposits on the condensed consolidated balance sheets are as follows (in thousands): September 30, 2021 December 31, 2020 Customer and builder deposits $ 70,079 $ 38,131 The difference between the opening and closing balances of customer and builder deposits results from the timing difference between the customers’ payments of deposits and the Company’s performance, impacted slightly by terminations of contracts. The amount of deposits on residential units and land and lots held as of the beginning of the period and recognized as revenue during the three and nine months ended September 30, 2021 and 2020 are as follows (in thousands): Three Months Ended September 30, Nine Months Ended September 30, 2021 2020 2021 2020 Type of Customer Homebuyers $ 14,839 $ 6,098 $ 24,120 $ 16,147 Homebuilders and Multi-Family Developers 815 1,135 1,982 5,415 Total deposits recognized as revenue $ 15,654 $ 7,233 $ 26,102 $ 21,562 Performance Obligations There was no revenue recognized during the nine months ended September 30, 2021 and 2020 from performance obligations satisfied in prior periods. Transaction Price Allocated to the Remaining Performance Obligations The aggregate amount of transaction price allocated to the remaining performance obligations on our land sale and lot option contracts is $17.0 million. The Company will recognize the remaining revenue when the lots are taken down, or upon closing for the sale of a land parcel, which is expected to occur as follows (in thousands): Total Remainder of 2021 $ 10,506 2022 4,997 2023 1,513 Total $ 17,016 The timing of lot takedowns is contingent upon a number of factors, including customer needs, the number of lots being purchased, receipt of acceptance of the plat by the municipality, weather-related delays, and agreed-upon lot takedown schedules. Our contracts with homebuyers have a duration of less than one year. As such, the Company uses the practical expedient as allowed under ASC 606, Revenue from Contracts with Customers,
Disaggregation of Revenue [Line Items]
Total revenues	$ 342,340,000	$ 275,821,000	$ 950,625,000	$ 721,921,000
Revenue recognized	15,654,000	7,233,000	26,102,000	21,562,000
Revenue recognized from performance obligations satisfied in prior periods			0
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	17,406,000	13,624,000	17,406,000	13,624,000	$ 13,543,000	$ 17,515,000	$ 13,611,000	$ 12,485,000
Contract with Customer, Liability	70,079,000		70,079,000		$ 38,131,000
Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	338,900,000	263,885,000	889,636,000	683,739,000
Residential Real Estate [Member] | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	338,075,000	262,319,000	886,488,000	678,352,000
Residential Real Estate [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Total revenues	825,000	1,566,000	3,148,000	5,387,000
Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	3,440,000	11,936,000	60,989,000	38,182,000
Real Estate, Other [Member] | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	3,440,000	11,936,000	60,989,000	38,182,000
Real Estate, Other [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Homebuilders [Member] | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Revenue recognized	815,000	1,135,000	1,982,000	5,415,000
Homebuilders [Member] | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	3,440,000	11,936,000	60,989,000	38,182,000
Homebuyers [Member] | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	338,900,000	263,885,000	889,636,000	683,739,000
Revenue recognized	14,839,000	6,098,000	24,120,000	16,147,000
Homebuyers [Member] | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Central | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	244,603,000	191,634,000	635,573,000	466,910,000
Central | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	3,440,000	11,894,000	34,413,000	37,900,000
Southeast [Domain] | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	94,297,000	72,251,000	254,063,000	216,829,000
Southeast [Domain] | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	42,000	26,576,000	282,000
Land Subdivider and Developers
Disaggregation of Revenue [Line Items]
Total revenues	3,295,000	11,779,000	32,537,000	37,401,000
Land Subdivider and Developers | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Homebuilders [Member]
Disaggregation of Revenue [Line Items]
Total revenues	339,045,000	264,042,000	918,088,000	684,520,000
Homebuilders [Member] | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	100,000	200,000	28,500,000	200,000
Homebuilders [Member] | Land and Lots [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Homebuilders [Member] | Southeast [Domain]
Disaggregation of Revenue [Line Items]
Total revenues	$ 94,298,000	$ 72,293,000	$ 280,640,000	$ 217,111,000

Revenue Recognition (Transactio

Revenue Recognition (Transaction Price Allocated to Remaining Performance Obligations) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2021USD ($)
Revenue from Contract with Customer [Abstract]
Remaining Performance Obligation, Expected Timing of Satisfaction	he Company will recognize the remaining revenue when the lots are taken down, or upon closing for the sale of a land parcel, which is expected to occur as follows (in thousands): Total Remainder of 2021 $ 10,506 2022 4,997 2023 1,513 Total $ 17,016
Revenue, Practical Expedient, Remaining Performance Obligation, Description	Our contracts with homebuyers have a duration of less than one year. As such, the Company uses the practical expedient as allowed under ASC 606, Revenue from Contracts with Customers, and therefore has not disclosed the transaction price allocated to remaining performance obligations as of the end of the reporting period.
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 17,016
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 10,506
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 4,997
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 1,513
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Entity Emerging Growth Company			false
Revenues:
Total revenues	$ 342,340	$ 275,821	$ 950,625	$ 721,921
Gross profit:
Gross Profit	91,336	67,886	251,301	170,750
Income before income taxes:
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	65,158	45,923	174,397	104,864
Inventory
Inventory	1,170,297		1,170,297		$ 844,635
Goodwill
Goodwill	680		680		680
Inventory	1,170,297		1,170,297		844,635
Corporate and Other [Member]
Gross profit:
Gross Profit	(7,127)	(6,977)	(19,841)	(19,420)
Income before income taxes:
Results of Operations, Income before Income Taxes	1,437	(202)	(80)	(5,066)
Goodwill
Inventory	32,613		32,613		25,980
Southeast [Domain]
Goodwill
Goodwill	680		680		680
Homebuilders [Member]
Revenues:
Total revenues	339,045	264,042	918,088	684,520
Gross profit:
Gross Profit	97,651	72,202	263,026	180,734
Income before income taxes:
Results of Operations, Income before Income Taxes	63,113	43,585	166,740	101,303
Goodwill
Inventory	771,118		771,118		605,100
Homebuilders [Member] | Southeast [Domain]
Revenues:
Total revenues	94,298	72,293	280,640	217,111
Gross profit:
Gross Profit	25,580	19,586	78,922	58,173
Income before income taxes:
Results of Operations, Income before Income Taxes	15,360	10,964	49,769	31,677
Goodwill
Inventory	263,268		263,268		183,623
Homebuilders [Member] | Central
Gross profit:
Gross Profit	72,071	52,616	184,104	122,561
Income before income taxes:
Results of Operations, Income before Income Taxes	47,753	32,621	116,971	69,626
Goodwill
Inventory	507,850		507,850		421,477
Homebuilders [Member] | Central America
Revenues:
Total revenues	244,747	191,749	637,448	467,409
Land Subdivider and Developers
Revenues:
Total revenues	3,295	11,779	32,537	37,401
Gross profit:
Gross Profit	812	2,661	8,116	9,436
Income before income taxes:
Results of Operations, Income before Income Taxes	608	2,540	7,737	8,627
Goodwill
Inventory	366,566		366,566		$ 213,555
Real Estate, Other [Member]
Revenues:
Total revenues	3,440	11,936	60,989	38,182
Real Estate, Other [Member] | Southeast [Domain]
Revenues:
Total revenues	0	42	26,576	282
Real Estate, Other [Member] | Central
Revenues:
Total revenues	3,440	11,894	34,413	37,900
Real Estate, Other [Member] | Homebuilders [Member]
Revenues:
Total revenues	100	200	28,500	200
Residential Real Estate [Member]
Revenues:
Total revenues	338,900	263,885	889,636	683,739
Residential Real Estate [Member] | Southeast [Domain]
Revenues:
Total revenues	94,297	72,251	254,063	216,829
Residential Real Estate [Member] | Central
Revenues:
Total revenues	244,603	191,634	635,573	466,910
Residential Real Estate [Member] | Land Subdivider and Developers
Revenues:
Total revenues	0	0	0	0
Land and Lots [Member] | Homebuilders [Member]
Revenues:
Total revenues	$ 0	$ 0	$ 0	$ 0

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Income tax expense	$ 13,898	$ 9,969	$ 37,093	$ 17,357
Effective tax rate	21.30%	21.70%	21.30%	16.60%

Net Income Attributable to Gr_3

Net Income Attributable to Green Brick Partners, Inc. Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net income attributable to Green Brick Partners, Inc.	$ 48,507	$ 34,819	$ 126,739	$ 84,383
Weighted-average number of shares outstanding —basic (in shares)	50,732	50,617	50,689	50,552
Basic net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 0.96	$ 0.69	$ 2.50	$ 1.67
Dilutive effect of stock options and restricted stock awards (in shares)	347	259	357	187
Weighted-average number of shares outstanding —diluted (in shares)	51,079	50,876	51,046	50,739
Diluted net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 0.95	$ 0.68	$ 2.48	$ 1.66

Net Income Attributable to Gr_4

Net Income Attributable to Green Brick Partners, Inc. Per Share (Antidilutive Options Excluded From Calculation of Earnings Per Share) (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Antidilutive options to purchase common stock and restricted stock awards (in shares)	0	0	0	4

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Carrying Value and Estimated Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Contingent consideration	$ 0		$ (368)
Payment for Contingent Consideration Liability, Operating Activities	(368)	$ (5,267)
Debt Instrument, Fair Value Disclosure	258,300
Notes Payable	$ 237,500

Related Party Disclosures (Deta

Related Party Disclosures (Details) - USD ($)	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Related Party Transaction [Line Items]
Contributions of LLC Members	$ 0	$ 400,000
Related Party Transaction, Expenses from Transactions with Related Party	$ 0.1
Centre Living
Related Party Transactions [Abstract]
Ownership percentage by noncontrolling owners	10.00%
Related Party Transaction [Line Items]
Ownership percentage by noncontrolling owners	10.00%
Ownership percentage by parent	90.00%
Office Space Lease Agreements
Related Party Transactions [Abstract]
Amounts due to affiliates	$ 0
Related Party Transaction [Line Items]
Amounts due to affiliates	0
GHO Homes [Member]
Related Party Transactions [Abstract]
Amounts due to affiliates	0
Related Party Transaction [Line Items]
Amounts due to affiliates	$ 0

Commitments and Contingencies_2

Commitments and Contingencies (Warranty activity) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Letters of Credit Outstanding, Amount	$ 3,800		$ 3,800		$ 9,800
Movement in Standard Product Warranty Accrual [Roll Forward]
Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties	(44)	$ 51	18	$ (88)
Accrued Expenses
Movement in Standard Product Warranty Accrual [Roll Forward]
Warranty accrual, beginning of period	7,902	4,851	6,407	3,840
Warranties issued	1,962	1,137	4,724	2,992
Settlements	(769)	(638)	(2,098)	(1,343)
Warranty accrual, end of period	$ 9,051	$ 5,401	$ 9,051	$ 5,401

Commitments and Contingencies_3

Commitments and Contingencies (Schedule of Annual Minimum Operating Lease Payments) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Operating Lease, Liability	$ 5,053		$ 2,591
Remainder of 2021	361
Operating Leases, Future Minimum Payments, Due in Two Years	1,306
Lessee, Operating Lease, Liability, Payments, Due Year Three	507
2021	517
Total future lease payments	5,597
Lessee, Operating Lease, Liability, to be Paid, Year One	1,538
Lessee, Operating Lease, Liability, to be Paid, after Year Five	1,368
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	544
Payment for Contingent Consideration Liability, Operating Activities	$ 368	$ 5,267

Commitments and Contingencies O

Commitments and Contingencies Operating Leases Disclosures - ASC 842 (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Leases [Abstract]
Earnest Money Deposits and Pre-acquisition Costs Written-Off			$ 210	$ 1,490
Short-term Lease, Cost	$ 200	$ 100	500	300
Operating Lease, Expense	400	300	1,000	900
Operating Lease, Payments	$ 300	$ 300	$ 900	$ 900
Operating Lease, Weighted Average Remaining Lease Term	4 years 10 months 24 days		4 years 10 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	4.10%		4.10%