Green Brick Partners (GRBK) 10-Q 8 Aug 19 2019 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2019	Aug. 05, 2019
Document And Entity Information [Abstract]
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	Jun. 30, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Tax Identification Number	205952523
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		50,551,427
Entity Shell Company	false
Entity File Number	001-33530
Entity Address, Address Line One	2805 Dallas Parkway
Entity Address, Address Line Two	Suite 400
Entity Address, City or Town	Plano
Entity Address, State or Province	Texas
Entity Address, Postal Zip Code	75093
City Area Code	469
Local Phone Number	573-6755

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
ASSETS
Cash	$ 34,383	$ 38,315
Restricted cash	4,469	3,440
Receivables	5,009	4,842
Inventory	719,878	668,961
Investment in unconsolidated entities	23,139	20,269
Operating Lease, Right-of-Use Asset	3,727	0
Property and equipment, net	4,261	4,690
Earnest money deposits	12,911	16,793
Deferred income tax assets, net	15,943	16,499
Intangible assets, net	750	856
Goodwill	680	680
Other assets	7,811	8,681
Total assets	832,961	784,026
LIABILITIES AND EQUITY
Accounts payable	25,422	26,091
Accrued expenses	27,783	29,201
Customer and builder deposits	31,578	31,978
Operating Lease, Liability	3,751	0
Borrowings on lines of credit, net	232,657	200,386
Contingent consideration	618	2,207
Total liabilities	321,809	289,863
Commitments and contingencies
Redeemable noncontrolling interest in equity of consolidated subsidiary	12,509	8,531
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; 50,879,949 and 50,719,884 issued and 50,696,011 and 50,583,128 outstanding as of June 30, 2019 and December 31, 2018, respectively	509	507
Treasury Stock, Common, Value	(1,369)	(981)
Additional paid-in capital	289,739	291,299
Retained earnings	204,591	177,526
Total Green Brick Partners, Inc. stockholders’ equity	493,470	468,351
Noncontrolling interests	5,173	17,281
Total equity	498,643	485,632
Total liabilities and equity	$ 832,961	$ 784,026

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
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	50,879,949	50,820,548	50,719,884	50,719,884	50,685,699	50,598,901
Common stock, shares outstanding (in shares)	50,696,011		50,583,128

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Total revenues	$ 183,506	$ 157,312	$ 352,134	$ 286,475
Cost of Goods and Services Sold	143,225	116,241	276,487	212,770
Total gross profit	40,281	41,071	75,647	73,705
Selling, general and administrative expense	22,494	20,018	46,026	38,147
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	(197)	0	257	0
Operating profit	17,984	21,053	29,364	35,558
Equity in income of unconsolidated entities	2,697	2,279	4,543	3,815
Other income, net	775	898	2,868	1,468
Income before income taxes	21,456	24,230	36,775	40,841
Income tax expense	5,332	5,235	9,160	8,607
Net income	16,124	18,995	27,615	32,234
Less: Net income attributable to noncontrolling interests	1,664	4,126	550	6,162
Net income attributable to Green Brick Partners, Inc.	$ 14,460	$ 14,869	$ 27,065	$ 26,072
Net income attributable to Green Brick Partners, Inc. per common share:
Basic (in dollars per share)	$ 0.29	$ 0.29	$ 0.53	$ 0.52
Diluted (in dollars per share)	$ 0.29	$ 0.29	$ 0.53	$ 0.51
Weighted average common shares used in the calculation of net income attributable to Green Brick Partners, Inc. per common share:
Basic (in shares)	50,655	50,664	50,609	50,620
Diluted (in shares)	50,724	50,783	50,665	50,751
Residential Real Estate [Member]
Total revenues	$ 175,054	$ 146,180	$ 336,642	$ 267,444
Cost of Goods and Services Sold	136,592	108,165	264,420	198,068
Real Estate, Other [Member]
Total revenues	8,452	11,132	15,492	19,031
Cost of Goods and Services Sold	$ 6,633	$ 8,076	$ 12,067	$ 14,702

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income	$ 27,615	$ 32,234
Depreciation, Depletion and Amortization	1,678	1,038
Adjustments to reconcile net income to net cash used in operating activities:
Share-based compensation expense	1,827	1,421
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	257	0
Deferred income taxes, net	556	8,320
Income (Loss) from Equity Method Investments	(4,543)	(3,815)
Distributions of income from unconsolidated entities	1,673	1,958
Changes in operating assets and liabilities:
Increase in receivables	(167)	(4,391)
Increase in inventory	(50,647)	(43,439)
Decrease (increase) in earnest money deposits	3,882	(2,355)
Decrease (increase) in other assets	752	(1,174)
Decrease in accounts payable	669	7,073
(Decrease) increase in accrued expenses	(1,276)	1,507
Payment for Contingent Consideration Liability, Operating Activities	(1,332)	0
(Decrease) increase in customer and builder deposits	(400)	3,468
Net cash used in operating activities	(20,794)	(12,301)
Cash flows from investing activities:
Payments to Acquire Businesses, Net of Cash Acquired		(25,347)
Stock Issued During Period, Value, Acquisitions	0
Payments to Acquire Equity Method Investments		(755)
Purchase of property and equipment	(1,143)	(1,178)
Net cash used in investing activities	(1,143)	(27,280)
Cash flows from financing activities:
Borrowings from lines of credit	93,500	95,500
Payments of debt issuance costs	0	(150)
Repayments of lines of credit	(61,500)	(35,000)
Repayments of notes payable	0	(9,022)
Payment for Contingent Consideration Liability, Financing Activities	(514)	0
Payments of withholding tax on vesting of restricted stock awards	(544)	(412)
Payments for Repurchase of Common Stock	(388)	0
Payments to Noncontrolling Interests	(10,993)	(10,423)
Temporary Equity, Interest in Subsidiary Earnings	(527)	0
Net cash provided by financing activities	19,034	40,493
Net (decrease) increase in cash and restricted cash	(2,903)	912
Cash, beginning of period	38,315	36,684
Restricted cash, beginning of period	3,440	3,605
Cash and restricted cash, beginning of period	41,755	40,289
Cash, end of period	34,383	37,069
Restricted cash, end of period	4,469	4,132
Cash and restricted cash, end of period	38,852	41,201
Supplemental disclosure of cash flow information:
Cash paid for interest, net of capitalized interest	0	0
Cash paid for income taxes, net of refunds	$ 7,520	$ 1,579

Significant Accounting Policies

Significant Accounting Policies Accounting Policies (Notes)	6 Months Ended
	Jun. 30, 2019
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, 2018 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, 2018 . 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, 2018 . Operating results for the three and six months ended June 30, 2019 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2019 or subsequent periods. 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. Beginning in the first quarter of 2019, the Company reclassified its sales commission expenses from cost of residential units to selling, general and administrative expense in the condensed consolidated statements of income in order to be more comparable with a majority of its peers. There was no impact to net income from the reclassification 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, 2018 . Changes and additions to significant accounting policies during the six months ended June 30, 2019 are presented below. Revenue Recognition The Company pays sales commissions to employees and/or outside realtors related to individual home sales which are expensed as incurred at the time of closing. Commissions on the sale of land parcels to third parties are also expensed as incurred upon closing. Sales commissions on the sale of homes and land parcels are included in selling, general and administrative expense in the consolidated statements of income. Fair Value Measurements Transfers between levels of the fair value hierarchy are deemed to have occurred on the date of the event or change in circumstances that caused the transfer. Recent Accounting Pronouncements In February 2016, the FASB issued Accounting Standard Update (“ASU”) 2016-02, Leases (Topic 842) (“Topic 842”), which requires lessees to recognize leases on the balance sheet and disclose key information about leasing arrangements. Topic 842 was subsequently amended by ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842 ; ASU 2018-10, Codification Improvements to Topic 842, Leases ; ASU 2018-11, Targeted Improvements; and ASU 2019-01, Codification Improvements . The new standard establishes a right-of-use model (“ROU”) that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. Leases are classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the statement of income. The new standard was effective for the Company on January 1, 2019 . A modified retrospective transition approach is required, applying the new standard to all leases existing at the date of initial application. An entity may choose to use either (1) its effective date or (2) the beginning of the earliest comparative period presented in the financial statements as its date of initial application. We adopted the new standard on January 1, 2019 and used the effective date as our date of initial application. Consequently, prior period financial information has not been recast and the disclosures required under the new standard have not been provided for dates and periods before January 1, 2019 . The new standard provides a number of optional practical expedients in transition. We elected the “package of practical expedients”, which permits us not to reassess under the new standard our prior conclusions about lease identification, lease classification and initial direct costs. We did not elect the use-of-hindsight or the practical expedient pertaining to land easements, the latter not being applicable to us. The new standard also provides practical expedients for an entity’s ongoing accounting. We elected the short-term lease recognition exemption for all leases that qualify. This means, for those leases that qualify, we have not recognized ROU assets or lease liabilities, and this includes not recognizing ROU assets or lease liabilities for existing short-term leases of those assets in transition. We also elected the practical expedient to not separate lease and non-lease components for all of our leases. We believe the most significant effects of the adoption of this standard relate to (1) the recognition of ROU assets and lease liabilities on our consolidated balance sheet for our office operating leases and (2) providing new disclosures about our leasing activities. There was no change in our leasing activities as a result of adoption. Upon adoption, as of January 1, 2019, we recognized operating lease liabilities of $4.2 million based on the present value of the remaining minimum rental payments under current leasing standards for existing operating leases, as well as corresponding ROU assets of $4.1 million . The $0.1 million difference between the ROU assets and lease liabilities is attributable to elimination of the accrued and prepaid rent existing as of January 1, 2019. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which changes the impairment model for most financial assets and certain other instruments from an “incurred loss” approach to an “expected credit loss” methodology. The standard is expected to be effective for annual and interim periods beginning January 1, 2020, with early adoption permitted, and requires full retrospective application on adoption. The Company is currently evaluating the impact of the adoption of ASU 2016-13 on the Company’s consolidated financial statements but does not expect such impact to be material. In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (“ASU 2017-04”), which removes Step 2 of the goodwill impairment test. A goodwill impairment will now be determined by the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for annual reporting periods, and interim periods therein, beginning after December 15, 2019, with early adoption permitted. The Company does not expect the adoption of ASU 2017-04 to have a material impact on the Company’s consolidated financial statements.
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.
Use of Estimates	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	Reclassifications Certain prior period amounts have been reclassified to conform to the current period presentation. Beginning in the first quarter of 2019, the Company reclassified its sales commission expenses from cost of residential units to selling, general and administrative expense in the condensed consolidated statements of income in order to be more comparable with a majority of its peers. There was no impact to net income from the reclassification 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, 2018 . Changes and additions to significant accounting policies during the six months ended June 30, 2019 are presented below.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements In February 2016, the FASB issued Accounting Standard Update (“ASU”) 2016-02, Leases (Topic 842) (“Topic 842”), which requires lessees to recognize leases on the balance sheet and disclose key information about leasing arrangements. Topic 842 was subsequently amended by ASU 2018-01, Land Easement Practical Expedient for Transition to Topic 842 ; ASU 2018-10, Codification Improvements to Topic 842, Leases ; ASU 2018-11, Targeted Improvements; and ASU 2019-01, Codification Improvements . The new standard establishes a right-of-use model (“ROU”) that requires a lessee to recognize a ROU asset and lease liability on the balance sheet for all leases with a term longer than 12 months. Leases are classified as finance or operating, with classification affecting the pattern and classification of expense recognition in the statement of income. The new standard was effective for the Company on January 1, 2019 . A modified retrospective transition approach is required, applying the new standard to all leases existing at the date of initial application. An entity may choose to use either (1) its effective date or (2) the beginning of the earliest comparative period presented in the financial statements as its date of initial application. We adopted the new standard on January 1, 2019 and used the effective date as our date of initial application. Consequently, prior period financial information has not been recast and the disclosures required under the new standard have not been provided for dates and periods before January 1, 2019 . The new standard provides a number of optional practical expedients in transition. We elected the “package of practical expedients”, which permits us not to reassess under the new standard our prior conclusions about lease identification, lease classification and initial direct costs. We did not elect the use-of-hindsight or the practical expedient pertaining to land easements, the latter not being applicable to us. The new standard also provides practical expedients for an entity’s ongoing accounting. We elected the short-term lease recognition exemption for all leases that qualify. This means, for those leases that qualify, we have not recognized ROU assets or lease liabilities, and this includes not recognizing ROU assets or lease liabilities for existing short-term leases of those assets in transition. We also elected the practical expedient to not separate lease and non-lease components for all of our leases. We believe the most significant effects of the adoption of this standard relate to (1) the recognition of ROU assets and lease liabilities on our consolidated balance sheet for our office operating leases and (2) providing new disclosures about our leasing activities. There was no change in our leasing activities as a result of adoption. Upon adoption, as of January 1, 2019, we recognized operating lease liabilities of $4.2 million based on the present value of the remaining minimum rental payments under current leasing standards for existing operating leases, as well as corresponding ROU assets of $4.1 million . The $0.1 million difference between the ROU assets and lease liabilities is attributable to elimination of the accrued and prepaid rent existing as of January 1, 2019. In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which changes the impairment model for most financial assets and certain other instruments from an “incurred loss” approach to an “expected credit loss” methodology. The standard is expected to be effective for annual and interim periods beginning January 1, 2020, with early adoption permitted, and requires full retrospective application on adoption. The Company is currently evaluating the impact of the adoption of ASU 2016-13 on the Company’s consolidated financial statements but does not expect such impact to be material. In January 2017, the FASB issued ASU 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment (“ASU 2017-04”), which removes Step 2 of the goodwill impairment test. A goodwill impairment will now be determined by the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. ASU 2017-04 is effective for annual reporting periods, and interim periods therein, beginning after December 15, 2019, with early adoption permitted. The Company does not expect the adoption of ASU 2017-04 to have a material impact on the Company’s consolidated financial statements.

Business Combination

Business Combination	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Business Combination	BUSINESS COMBINATION On April 26, 2018 (the “Acquisition Date”), following a series of transactions, the Company acquired substantially all of the assets and assumed certain liabilities of GHO Homes Corporation and its affiliates (“GHO”) through a newly formed subsidiary, GRBK GHO Homes, LLC (“GRBK GHO”), in which the Company holds an 80% controlling interest. GRBK GHO operates primarily in the Vero Beach, Florida market and is engaged in land and lot development, as well as all aspects of the homebuilding process. The acquisition allowed the Company to expand its operations into a new geographic market. The Company consolidates the financial statements of GRBK GHO as the Company owns 80% of the outstanding voting shares of the builder. The noncontrolling interest attributable to the 20% minority interest owned by our Florida-based partner is included as redeemable noncontrolling interest in equity of consolidated subsidiary in the Company’s condensed consolidated financial statements. The following table shows the changes in redeemable noncontrolling interest in equity of consolidated subsidiary during the three months ended June 30, 2019 (in thousands): Balance at December 31, 2018 $ 8,531 Net income 1,665 Distributions of income to redeemable noncontrolling interest partner (527 ) Accretion of redeemable noncontrolling interest 2,840 Balance at June 30, 2019 $ 12,509 Under the terms of the purchase agreement, the Company may be obligated to pay contingent consideration to our partner if certain annual performance targets are met over the three-year period following the Acquisition Date. The performance targets specified in the purchase agreement were met for the period from April 26, 2018 through December 31, 2018 , and contingent consideration of $1.8 million was earned by the minority partner in 2018 and paid by the Company in April 2019 in addition to a $0.5 million distribution of income. Estimates of the undiscounted contingent consideration payouts for the period from January 1, 2019 through April 26, 2021 range from $1.9 million to $3.5 million . The change in the range of estimates of the undiscounted contingent consideration compared to December 31, 2018 was due to revision of the Company’s forecasts of GRBK GHO profits and capital requirements, as well as reduced volatility of earnings.

Net Income Attributable to Gree

Net Income Attributable to Green Brick Partners, Inc. Per Share	6 Months Ended
	Jun. 30, 2019
Earnings Per Share [Abstract]
Net Income Attributable to Green Brick Partners, Inc. Per Share	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 June 30, Six Months Ended June 30, 2019 2018 2019 2018 Net income attributable to Green Brick Partners, Inc. $ 14,460 $ 14,869 $ 27,065 $ 26,072 Weighted-average number of shares outstanding - basic 50,655 50,664 50,609 50,620 Basic net income attributable to Green Brick Partners, Inc. per share $ 0.29 $ 0.29 $ 0.53 $ 0.52 Weighted-average number of shares outstanding - basic 50,655 50,664 50,609 50,620 Dilutive effect of stock options and restricted stock awards 69 119 56 131 Weighted-average number of shares outstanding - diluted 50,724 50,783 50,665 50,751 Diluted net income attributable to Green Brick Partners, Inc. per share $ 0.29 $ 0.29 $ 0.53 $ 0.51 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 June 30, Six Months Ended June 30, 2019 2018 2019 2018 Antidilutive options to purchase common stock and restricted stock awards 35 9 28 19

Inventory

Inventory	6 Months Ended
	Jun. 30, 2019
Inventory Disclosure [Abstract]
Inventory	INVENTORY A summary of inventory is as follows (in thousands): June 30, 2019 December 31, 2018 Homes completed or under construction $ 303,924 $ 268,763 Land and lots - developed and under development 415,561 399,809 Land held for sale 393 389 Total inventory $ 719,878 $ 668,961 A summary of interest costs incurred, capitalized and expensed is as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Interest capitalized at beginning of period $ 16,526 $ 11,221 $ 14,780 $ 10,474 Interest incurred 3,128 2,006 6,014 3,634 Interest charged to cost of revenues (2,455 ) (1,084 ) (3,595 ) (1,965 ) Interest capitalized at end of period $ 17,199 $ 12,143 $ 17,199 $ 12,143 As of June 30, 2019 , the Company reviewed the performance and outlook for all of its communities for indicators of potential impairment and performed detailed impairment evaluation and analyses when necessary. As of June 30, 2019 , the Company performed detailed impairment evaluations of selling communities with a combined corresponding carrying value of approximately $14.7 million . An impairment adjustment of $0.1 million to reduce the carrying value of impaired communities to fair value was recorded for the three and six months ended June 30, 2019 . The Company recorded an impairment adjustment of $0.1 million related to inventory for the three and six months ended June 30, 2018 .

Revenue Recognition

Revenue Recognition	6 Months Ended
	Jun. 30, 2019
Revenue from Contract with Customer [Abstract]
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 months ended June 30, 2019 and 2018 (in thousands): Three Months Ended June 30, 2019 Three Months Ended June 30, 2018 Builder Operations Land Development Builder Operations Land Development Primary Geographical Market Central $ 79,168 $ 8,452 $ 68,892 $ 10,692 Southeast 95,886 — 77,288 440 Total revenues $ 175,054 $ 8,452 $ 146,180 $ 11,132 Type of Customer Homebuyers $ 175,054 $ — $ 146,180 $ 440 Homebuilders — 8,452 — 10,692 Total revenues $ 175,054 $ 8,452 $ 146,180 $ 11,132 Product Type Residential units $ 175,054 $ — $ 146,180 $ — Land and lots — 8,452 — 11,132 Total revenues $ 175,054 $ 8,452 $ 146,180 $ 11,132 Timing of Revenue Recognition Transferred at a point in time $ 172,490 $ 8,452 $ 143,878 $ 11,132 Transferred over time 2,564 — 2,302 — Total revenues $ 175,054 $ 8,452 $ 146,180 $ 11,132 Revenue recognized over time represents revenue from mechanic’s lien contracts. The following reflects the disaggregation of revenue by primary geographic market, type of customer, product type, and timing of revenue recognition for the six months ended June 30, 2019 and 2018 (in thousands): Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 Builder Operations Land Development Builder Operations Land Development Primary Geographical Market Central $ 163,593 $ 15,482 $ 141,338 $ 14,691 Southeast 173,049 10 126,106 4,340 Total revenues $ 336,642 $ 15,492 $ 267,444 $ 19,031 Type of Customer Homebuyers $ 336,642 $ — $ 267,444 $ 440 Homebuilders — 15,492 — 18,591 Total revenues $ 336,642 $ 15,492 $ 267,444 $ 19,031 Product Type Residential units $ 336,642 $ — $ 267,444 $ — Land and lots — 15,492 — 19,031 Total revenues $ 336,642 $ 15,492 $ 267,444 $ 19,031 Timing of Revenue Recognition Transferred at a point in time $ 331,723 $ 15,492 $ 264,244 $ 19,031 Transferred over time 4,919 — 3,200 — Total revenues $ 336,642 $ 15,492 $ 267,444 $ 19,031 Contract Balances Opening and closing contract balances included in customer and builder deposits on the condensed consolidated balance sheets are as follows (in thousands): June 30, 2019 December 31, 2018 Customer and builder deposits $ 31,578 $ 31,978 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 six months ended June 30, 2019 and 2018 are as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Type of Customer Homebuyers $ 7,180 $ 5,423 $ 9,840 $ 7,016 Homebuilders 857 5 1,682 236 Total deposits recognized as revenue $ 8,037 $ 5,428 $ 11,522 $ 7,252 Performance Obligations There was no revenue recognized during the six months ended June 30, 2019 and 2018 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 $60.1 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 2019 $ 21,410 2020 27,871 2021 10,865 Total $ 60,146 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, and therefore has not disclosed the transaction price allocated to remaining performance obligations as of the end of the reporting period.

Investment in Unconsolidated En

Investment in Unconsolidated Entities	6 Months Ended
	Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]
Investment in Unconsolidated Entities	INVESTMENT IN UNCONSOLIDATED ENTITIES A summary of the unaudited condensed financial information of the unconsolidated entities that are accounted for by the equity method is as follows (in thousands): June 30, 2019 December 31, 2018 Assets: Cash $ 9,260 $ 14,584 Accounts receivable 3,525 1,259 Bonds and notes receivable 5,864 5,864 Loans held for sale, at fair value 8,266 3,083 Inventory 51,291 44,375 Other assets 4,390 3,132 Total assets $ 82,596 $ 72,297 Liabilities: Accounts payable $ 3,247 $ 2,173 Accrued expenses and other liabilities 8,086 5,328 Notes payable 33,991 31,402 Total liabilities $ 45,324 $ 38,903 Owners’ equity: Green Brick $ 18,582 $ 15,653 Others 18,690 17,741 Total owners’ equity $ 37,272 $ 33,394 Total liabilities and owners’ equity $ 82,596 $ 72,297 Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Revenues $ 43,261 $ 43,953 $ 74,358 $ 76,952 Costs and expenses 37,804 39,099 65,121 69,020 Net earnings of unconsolidated entities $ 5,457 $ 4,854 $ 9,237 $ 7,932 Company’s share in net earnings of unconsolidated entities $ 2,697 $ 2,279 $ 4,543 $ 3,815

Debt

Debt	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Debt	DEBT Lines of Credit Borrowings on lines of credit outstanding, net of debt issuance costs, as of June 30, 2019 and December 31, 2018 consisted of the following (in thousands): June 30, 2019 December 31, 2018 Revolving credit facility $ 55,500 $ 46,500 Unsecured revolving credit facility 178,500 155,500 Debt issuance costs, net of amortization (1,343 ) (1,614 ) Total borrowings on lines of credit, net $ 232,657 $ 200,386 Revolving Credit Facility On July 30, 2015 , the Company entered into a revolving credit facility (the “Credit Facility”) with Inwood National Bank, which initially provided for up to $50.0 million . Amounts outstanding under the Credit Facility are secured by mortgages on real property and security interests in certain personal 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. Following several amendments, as of June 30, 2019 , the aggregate commitment amount was $75.0 million and the maturity date of the Credit Facility was May 1, 2022. As of June 30, 2019 , letters of credit outstanding totaling $1.9 million reduced the aggregate maximum commitment amount to $73.1 million . As of June 30, 2019 , the interest rate on outstanding borrowings under the Credit Facility was 5.25% per annum. Unsecured Revolving Credit Facility On December 15, 2015, the Company entered into a credit agreement (the “Credit Agreement”), providing for a senior, unsecured revolving credit facility with initial aggregate lending commitments of up to $40.0 million (the “Unsecured Revolving Credit Facility”). Following amendments to the Credit Agreement, the aggregate lending commitment available under the Unsecured Revolving Credit Facility as of June 30, 2019 was $215.0 million , the maximum aggregate amount of the Unsecured Revolving Credit Facility was $275.0 million , and the termination date with respect to commitments under the Unsecured Revolving Credit Facility was December 14, 2021. As of June 30, 2019 , the interest rates on outstanding borrowings under the Unsecured Revolving Credit Facility ranged from 4.88% to 4.92%

Share-Based Compensation

Share-Based Compensation	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Share-Based Compensation	SHARE-BASED COMPENSATION Share-Based Award Activity During the six months ended June 30, 2019 , the Company granted restricted stock awards (“RSAs”) under its 2014 Omnibus Equity Incentive Plan to executive officers (“EOs”) and members of the BOD. The RSAs granted to the EOs were 100% vested and non-forfeitable on the grant date. Some members of the BOD elected to defer up to 100% of their annual retainer fee in the form of common stock. The RSAs granted to the BOD will become fully vested on the earlier of (i) the first anniversary of the date of grant or (ii) the date of the Company’s 2020 annual meeting of stockholders. The fair value of the RSAs granted to EOs and the BOD was recorded as share-based compensation expense on the grant date or over the vesting period, as applicable. The Company withheld 59,116 shares of common stock from EOs, at a total cost of $0.5 million , to satisfy statutory minimum tax requirements upon grant of the RSAs. A summary of shared-based awards activity during the six months ended June 30, 2019 is as follows: Number of Shares Weighted Average Grant Date Fair Value per Share (in thousands) Nonvested, December 31, 2018 34 $ 12.00 Granted 219 $ 9.14 Vested (194 ) $ 9.67 Forfeited — $ — Nonvested, June 30, 2019 59 $ 9.05 Stock Options A summary of stock options activity during the six months ended June 30, 2019 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, 2018 500 $ 7.49 Granted — — Exercised — — Forfeited — — Options outstanding, June 30, 2019 500 $ 7.49 5.33 $ 410 Options exercisable, June 30, 2019 400 $ 7.49 5.33 $ 328 A summary of unvested stock options activity during the six months ended June 30, 2019 is as follows: Number of Shares Weighted Average Grant Date Fair Value per Share (in thousands) Unvested, December 31, 2018 100 $ 2.88 Granted — — Vested — — Forfeited — — Unvested, June 30, 2019 100 $ 2.88 Share-Based Compensation Expense Share-based compensation expense was $0.2 million and $1.8 million for the three and six months ended June 30, 2019 , respectively, and $0.2 million and $1.4 million for the three and six months ended June 30, 2018 , respectively. Recognized tax benefit related to share-based compensation expense was $0.0 million and $0.4 million for the three and six months ended June 30, 2019 , respectively, and $0.0 million and $0.3 million for the three and six months ended June 30, 2018 , respectively. As of June 30, 2019 , the estimated total remaining unamortized share-based compensation expense related to unvested RSAs, net of forfeitures, was $0.5 million which is expected to be recognized over a weighted-average period of 0.9 years. As of June 30, 2019 , the estimated total remaining unamortized share-based compensation expense related to stock options, net of forfeitures, was $0.1 million which is expected to be recognized over a weighted-average period of 0.3 years.

Related Party Transactions

Related Party Transactions	6 Months Ended
	Jun. 30, 2019
Related Party Transactions [Abstract]
Related Party Transactions	RELATED PARTY TRANSACTIONS During the three and six months ended June 30, 2019 and 2018 , the Company had the following related party transactions through the normal course of business. Suwanee Station In March 2016, the Company purchased undeveloped land for a 73 -unit townhome community, Suwanee Station in Atlanta. Simultaneously, the Company entered into a partnership agreement with an entity affiliated with the president of TPG to develop the land for sale of the lots to TPG. Contributions and profits are shared 50% by the Company and 50% by the affiliated entity. During the three and six months ended June 30, 2019 , TPG purchased 7 and 13 lots within the community for $0.3 million and $0.5 million , respectively. During the three and six months ended June 30, 2018 , TPG purchased 3 and 11 lots within the community for $0.2 million and $0.7 million , respectively. As of June 30, 2019 , there were no lots remaining to be sold. Total capital distributions as of June 30, 2019 were $3.3 million . Total distributions made by the partnership during the three and six months ended June 30, 2019 were $0.5 million and $0.9 million , respectively, of which $0.3 million and $0.5 million , respectively, were paid to the Company. Total distributions made by the partnership during the three and six months ended June 30, 2018 were $0.0 million and $0.7 million , respectively, of which $0.0 million and $0.3 million , respectively, were paid to the Company. Final capital distributions were made during the three months ended June 30, 2019 , and the affiliated entity has ceased its activity. The Company holds two of the three board seats and is able to exercise control over the operations of the partnership and therefore has consolidated the entity’s results of operations and financial condition into its financial statements. Corporate Officers Trevor Brickman, the son of Green Brick’s Chief Executive Officer, is the President of Centre Living Homes, LLC (“Centre Living”). Green Brick’s ownership interest in Centre Living is 50% and Trevor Brickman’s ownership interest is 50% . Green Brick has 51% 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 six months ended June 30, 2019 , GRBK GHO incurred de minimis rent expense under such lease agreements. As of June 30, 2019 , 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 six months ended June 30, 2019 , GRBK GHO incurred de minimis fees related to such title closing services. As of June 30, 2019 , no

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2019USD ($)
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, restricted cash, receivables, earnest money deposits, other assets, accounts payable, accrued expenses, customer and builder deposits, borrowings on lines of credit, and notes payable. Per the fair value hierarchy, level 1 financial instruments include: cash, 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 June 30, 2019 and December 31, 2018 . Level 2 financial instruments include borrowings on lines of credit. 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 fair value of the contingent consideration liability related to the GRBK GHO business combination was estimated using a Monte Carlo simulation model under the option pricing method. As the measurement of the contingent consideration is based primarily on significant inputs not observable in the market, it represents a level 3 measurement. Key inputs in measuring the fair value of the contingent consideration liability are management’s projections of GRBK GHO’s net income and debt, the discount rate that reflects the risk associated with achieving the milestones of the contingent consideration payments, and expected volatility of earnings. The discount rate used in the simulation was an estimated risk free rate which ranged from 1.8% to 2.0% over the term of the contingent consideration. The expected volatility as derived from comparable publicly traded companies ranged from 25.0% to 50.0% over the term of the contingent consideration. The reconciliation of the beginning and ending balances for level 3 measurements is as follows (in thousands): Carrying Value Estimated Fair Value Contingent consideration liability, balance as of December 31, 2018 $ 2,207 $ 2,207 Payment of contingent consideration (514 ) (514 ) Payment of contingent consideration in excess of acquisition date fair value (1,332 ) (1,332 ) Change in fair value of contingent consideration 257 257 Contingent consideration liability, balance as of June 30, 2019 $ 618 $ 618 There were no transfers between the levels of the fair value hierarchy for any of our financial instruments during the three and six months ended June 30, 2019 . 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. Per the fair value hierarchy, these items are level 3 nonfinancial instruments. For additional information on the Company’s inventory, refer to Note 4.
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Transfers, Net	$ 0
Measurement Input, Discount Rate [Member] | GHO Homes [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	0.018
Measurement Input, Discount Rate [Member] | GHO Homes [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	0.020
Measurement Input, Price Volatility [Member] | GHO Homes [Member] | Minimum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	0.250
Measurement Input, Price Volatility [Member] | GHO Homes [Member] | Maximum [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	0.500

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	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 June 30, 2019 and December 31, 2018 , letters of credit outstanding were $2.0 million and $2.2 million , respectively, and performance bonds outstanding totaled $4.7 million and $5.3 million , respectively. 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 six months ended June 30, 2019 and 2018 consisted of the following (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Warranty accrual, beginning of period $ 2,627 $ 2,236 $ 2,980 $ 2,083 Warranties issued 768 709 1,421 1,113 Changes in liability for existing warranties 47 (13 ) (97 ) (17 ) Settlements (544 ) (393 ) (1,406 ) (640 ) Warranty accrual, end of period $ 2,898 $ 2,539 $ 2,898 $ 2,539 Operating Leases The Company has leases associated with office and design center space 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 $0.3 million and $0.6 million for the three and six months ended June 30, 2019 , respectively, is included in selling, general and administrative expense in the condensed consolidated statements of income. For the three and six months ended June 30, 2019 , cash paid for amounts included in the measurement of operating lease liabilities was $0.3 million and $0.6 million , respectively. As of June 30, 2019 , the weighted-average remaining lease term and the weighted-average discount rate used in calculating our lease liabilities were 3.7 years and 5.25% , 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 June 30, 2019 are presented below (in thousands): Remainder of 2019 $ 599 2020 1,235 2021 1,011 2022 734 2023 558 Total future lease payments $ 4,137 Less: Interest 386 Present value of lease liabilities $ 3,751 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 ROU 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 $0.1 million and $0.2 million for the three and six months ended June 30, 2019 , respectively, related to such lease contracts is included in selling, general and administrative expense in the condensed consolidated statements of income. Land and Lot Option Contracts In the ordinary course of business, the Company enters into land and lot option contracts in order to procure land for the construction of homes in the future. Earnest money deposits act as security for such contracts. Certain of our earnest money deposits are subject to first priority liens on the land that we have contracted to procure. As of June 30, 2019 and December 31, 2018 , there were 3,050 and 1,843 lots under option, respectively, including option contracts for land intended to be developed into lots. The land and lot option contracts in place as of June 30, 2019 provide for potential land and lot purchase payments through 2022. If each option contract in place as of June 30, 2019 was exercised, expected purchase payments would be as follows (in thousands): Total Remainder of 2019 $ 73,528 2020 76,120 2021 31,275 2022 3,739 Total $ 184,662 Deposits and pre-acquisition costs written off related to option contracts abandoned totaled $0.0 million and $0.5 million for the three and six months ended June 30, 2019 , respectively. Deposits and pre-acquisition costs written off related to option contracts abandoned totaled $0.0 million and $0.1 million for the three and six months ended June 30, 2018 , respectively. 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.

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2019
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 June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Revenues: (1) Builder operations Central $ 79,168 $ 68,892 $ 163,593 $ 141,338 Southeast 95,886 77,728 173,059 130,446 Total builder operations 175,054 146,620 336,652 271,784 Land development 8,452 10,692 15,482 14,691 Total revenues $ 183,506 $ 157,312 $ 352,134 $ 286,475 Gross profit (loss): Builder operations Central $ 17,903 $ 18,827 $ 36,020 $ 39,362 Southeast 24,855 21,863 44,142 35,713 Total builder operations 42,758 40,690 80,162 75,075 Land development 2,119 3,164 3,902 4,449 Corporate, other and unallocated (2) (4,596 ) (2,783 ) (8,417 ) (5,819 ) Total gross profit $ 40,281 $ 41,071 $ 75,647 $ 73,705 Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Income (loss) before income taxes: Builder operations Central $ 6,916 $ 9,942 $ 13,854 $ 21,042 Southeast 14,962 13,351 24,114 21,329 Total builder operations 21,878 23,293 37,968 42,371 Land development 1,622 2,664 4,299 3,683 Corporate, other and unallocated (3) (2,044 ) (1,727 ) (5,492 ) (5,213 ) Total income before income taxes $ 21,456 $ 24,230 $ 36,775 $ 40,841 June 30, 2019 December 31, 2018 Inventory: Builder operations Central $ 198,866 $ 160,980 Southeast 174,581 159,616 Total builder operations 373,447 320,596 Land development 323,406 329,105 Corporate, other and unallocated (4) 23,025 19,260 Total inventory $ 719,878 $ 668,961 Goodwill: (5) 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 controlled builders have revenues from land or lot closings, which for the three and six months ended June 30, 2019 was $0.0 million , compared to $0.4 million and $4.3 million for the three and six months ended June 30, 2018 , respectively. (2) Corporate, other and unallocated gross loss is comprised of capitalized overhead and capitalized interest adjustments that are not allocated to operating segments. (3) Corporate, other and unallocated 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. (5) In connection with the GRBK GHO business combination, the Company recorded goodwill of $0.7 million .

Significant Accounting Polici_2

Significant Accounting Policies Changes in Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2019
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, 2018 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, 2018 . 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, 2018 . Operating results for the three and six months ended June 30, 2019 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2019 or subsequent periods.
Revenue from Contract with Customer [Policy Text Block]	Revenue Recognition The Company pays sales commissions to employees and/or outside realtors related to individual home sales which are expensed as incurred at the time of closing. Commissions on the sale of land parcels to third parties are also expensed as incurred upon closing. Sales commissions on the sale of homes and land parcels are included in selling, general and administrative expense in the consolidated statements of income.

Business Combination (Tables)

Business Combination (Tables)	6 Months Ended
	Jun. 30, 2019
Business Combinations [Abstract]
Redeemable Noncontrolling Interest [Table Text Block]	The following table shows the changes in redeemable noncontrolling interest in equity of consolidated subsidiary during the three months ended June 30, 2019 (in thousands): Balance at December 31, 2018 $ 8,531 Net income 1,665 Distributions of income to redeemable noncontrolling interest partner (527 ) Accretion of redeemable noncontrolling interest 2,840 Balance at June 30, 2019 $ 12,509

Net Income Attributable to Gr_2

Net Income Attributable to Green Brick Partners, Inc. Per Share (Tables)	6 Months Ended
	Jun. 30, 2019
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 June 30, Six Months Ended June 30, 2019 2018 2019 2018 Net income attributable to Green Brick Partners, Inc. $ 14,460 $ 14,869 $ 27,065 $ 26,072 Weighted-average number of shares outstanding - basic 50,655 50,664 50,609 50,620 Basic net income attributable to Green Brick Partners, Inc. per share $ 0.29 $ 0.29 $ 0.53 $ 0.52 Weighted-average number of shares outstanding - basic 50,655 50,664 50,609 50,620 Dilutive effect of stock options and restricted stock awards 69 119 56 131 Weighted-average number of shares outstanding - diluted 50,724 50,783 50,665 50,751 Diluted net income attributable to Green Brick Partners, Inc. per share $ 0.29 $ 0.29 $ 0.53 $ 0.51
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 June 30, Six Months Ended June 30, 2019 2018 2019 2018 Antidilutive options to purchase common stock and restricted stock awards 35 9 28 19

Inventory (Tables)

Inventory (Tables)	6 Months Ended
	Jun. 30, 2019
Inventory Disclosure [Abstract]
Schedule of Real Estate Inventory	A summary of inventory is as follows (in thousands): June 30, 2019 December 31, 2018 Homes completed or under construction $ 303,924 $ 268,763 Land and lots - developed and under development 415,561 399,809 Land held for sale 393 389 Total inventory $ 719,878 $ 668,961
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 June 30, Six Months Ended June 30, 2019 2018 2019 2018 Interest capitalized at beginning of period $ 16,526 $ 11,221 $ 14,780 $ 10,474 Interest incurred 3,128 2,006 6,014 3,634 Interest charged to cost of revenues (2,455 ) (1,084 ) (3,595 ) (1,965 ) Interest capitalized at end of period $ 17,199 $ 12,143 $ 17,199 $ 12,143

Revenue Recognition (Tables)

Revenue Recognition (Tables)	6 Months Ended
	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 months ended June 30, 2019 and 2018 (in thousands): Three Months Ended June 30, 2019 Three Months Ended June 30, 2018 Builder Operations Land Development Builder Operations Land Development Primary Geographical Market Central $ 79,168 $ 8,452 $ 68,892 $ 10,692 Southeast 95,886 — 77,288 440 Total revenues $ 175,054 $ 8,452 $ 146,180 $ 11,132 Type of Customer Homebuyers $ 175,054 $ — $ 146,180 $ 440 Homebuilders — 8,452 — 10,692 Total revenues $ 175,054 $ 8,452 $ 146,180 $ 11,132 Product Type Residential units $ 175,054 $ — $ 146,180 $ — Land and lots — 8,452 — 11,132 Total revenues $ 175,054 $ 8,452 $ 146,180 $ 11,132 Timing of Revenue Recognition Transferred at a point in time $ 172,490 $ 8,452 $ 143,878 $ 11,132 Transferred over time 2,564 — 2,302 — Total revenues $ 175,054 $ 8,452 $ 146,180 $ 11,132 Revenue recognized over time represents revenue from mechanic’s lien contracts. The following reflects the disaggregation of revenue by primary geographic market, type of customer, product type, and timing of revenue recognition for the six months ended June 30, 2019 and 2018 (in thousands): Six Months Ended June 30, 2019 Six Months Ended June 30, 2018 Builder Operations Land Development Builder Operations Land Development Primary Geographical Market Central $ 163,593 $ 15,482 $ 141,338 $ 14,691 Southeast 173,049 10 126,106 4,340 Total revenues $ 336,642 $ 15,492 $ 267,444 $ 19,031 Type of Customer Homebuyers $ 336,642 $ — $ 267,444 $ 440 Homebuilders — 15,492 — 18,591 Total revenues $ 336,642 $ 15,492 $ 267,444 $ 19,031 Product Type Residential units $ 336,642 $ — $ 267,444 $ — Land and lots — 15,492 — 19,031 Total revenues $ 336,642 $ 15,492 $ 267,444 $ 19,031 Timing of Revenue Recognition Transferred at a point in time $ 331,723 $ 15,492 $ 264,244 $ 19,031 Transferred over time 4,919 — 3,200 — Total revenues $ 336,642 $ 15,492 $ 267,444 $ 19,031
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): June 30, 2019 December 31, 2018 Customer and builder deposits $ 31,578 $ 31,978 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 six months ended June 30, 2019 and 2018 are as follows (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Type of Customer Homebuyers $ 7,180 $ 5,423 $ 9,840 $ 7,016 Homebuilders 857 5 1,682 236 Total deposits recognized as revenue $ 8,037 $ 5,428 $ 11,522 $ 7,252
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 2019 $ 21,410 2020 27,871 2021 10,865 Total $ 60,146

Investment in Unconsolidated _2

Investment in Unconsolidated Entities (Tables)	6 Months Ended
	Jun. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]
Equity Method Investments	A summary of the unaudited condensed financial information of the unconsolidated entities that are accounted for by the equity method is as follows (in thousands): June 30, 2019 December 31, 2018 Assets: Cash $ 9,260 $ 14,584 Accounts receivable 3,525 1,259 Bonds and notes receivable 5,864 5,864 Loans held for sale, at fair value 8,266 3,083 Inventory 51,291 44,375 Other assets 4,390 3,132 Total assets $ 82,596 $ 72,297 Liabilities: Accounts payable $ 3,247 $ 2,173 Accrued expenses and other liabilities 8,086 5,328 Notes payable 33,991 31,402 Total liabilities $ 45,324 $ 38,903 Owners’ equity: Green Brick $ 18,582 $ 15,653 Others 18,690 17,741 Total owners’ equity $ 37,272 $ 33,394 Total liabilities and owners’ equity $ 82,596 $ 72,297 Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Revenues $ 43,261 $ 43,953 $ 74,358 $ 76,952 Costs and expenses 37,804 39,099 65,121 69,020 Net earnings of unconsolidated entities $ 5,457 $ 4,854 $ 9,237 $ 7,932 Company’s share in net earnings of unconsolidated entities $ 2,697 $ 2,279 $ 4,543 $ 3,815

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2019
Debt Disclosure [Abstract]
Schedule of Lines of Credit Outstanding	ines of credit outstanding, net of debt issuance costs, as of June 30, 2019 and December 31, 2018 consisted of the following (in thousands): June 30, 2019 December 31, 2018 Revolving credit facility $ 55,500 $ 46,500 Unsecured revolving credit facility 178,500 155,500 Debt issuance costs, net of amortization (1,343 ) (1,614 ) Total borrowings on lines of credit, net $ 232,657 $ 200,386

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	6 Months Ended
	Jun. 30, 2019
Equity [Abstract]
Redeemable Noncontrolling Interest [Table Text Block]	The following table shows the changes in redeemable noncontrolling interest in equity of consolidated subsidiary during the three months ended June 30, 2019 (in thousands): Balance at December 31, 2018 $ 8,531 Net income 1,665 Distributions of income to redeemable noncontrolling interest partner (527 ) Accretion of redeemable noncontrolling interest 2,840 Balance at June 30, 2019 $ 12,509

Share-Based Compensation (Table

Share-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2019
Share-based Payment Arrangement [Abstract]
Schedule of Share-Based Awards Activity	A summary of shared-based awards activity during the six months ended June 30, 2019 is as follows: Number of Shares Weighted Average Grant Date Fair Value per Share (in thousands) Nonvested, December 31, 2018 34 $ 12.00 Granted 219 $ 9.14 Vested (194 ) $ 9.67 Forfeited — $ — Nonvested, June 30, 2019 59 $ 9.05
Summary of Stock Option Activity	A summary of stock options activity during the six months ended June 30, 2019 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, 2018 500 $ 7.49 Granted — — Exercised — — Forfeited — — Options outstanding, June 30, 2019 500 $ 7.49 5.33 $ 410 Options exercisable, June 30, 2019 400 $ 7.49 5.33 $ 328 A summary of unvested stock options activity during the six months ended June 30, 2019 is as follows: Number of Shares Weighted Average Grant Date Fair Value per Share (in thousands) Unvested, December 31, 2018 100 $ 2.88 Granted — — Vested — — Forfeited — — Unvested, June 30, 2019 100 $ 2.88

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2019
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair Value, Liabilities Measured on Recurring Basis [Table Text Block]	The reconciliation of the beginning and ending balances for level 3 measurements is as follows (in thousands): Carrying Value Estimated Fair Value Contingent consideration liability, balance as of December 31, 2018 $ 2,207 $ 2,207 Payment of contingent consideration (514 ) (514 ) Payment of contingent consideration in excess of acquisition date fair value (1,332 ) (1,332 ) Change in fair value of contingent consideration 257 257 Contingent consideration liability, balance as of June 30, 2019 $ 618 $ 618

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Warranty Activity	Warranty activity during the three and six months ended June 30, 2019 and 2018 consisted of the following (in thousands): Three Months Ended June 30, Six Months Ended June 30, 2019 2018 2019 2018 Warranty accrual, beginning of period $ 2,627 $ 2,236 $ 2,980 $ 2,083 Warranties issued 768 709 1,421 1,113 Changes in liability for existing warranties 47 (13 ) (97 ) (17 ) Settlements (544 ) (393 ) (1,406 ) (640 ) Warranty accrual, end of period $ 2,898 $ 2,539 $ 2,898 $ 2,539
Schedule of Annual Minimum Operating Lease Payments	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 June 30, 2019 are presented below (in thousands): Remainder of 2019 $ 599 2020 1,235 2021 1,011 2022 734 2023 558 Total future lease payments $ 4,137 Less: Interest 386 Present value of lease liabilities $ 3,751
Schedule of Expected Land and Lot Purchase Payments Under Option Agreements	If each option contract in place as of June 30, 2019 was exercised, expected purchase payments would be as follows (in thousands): Total Remainder of 2019 $ 73,528 2020 76,120 2021 31,275 2022 3,739 Total $ 184,662

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2019
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 June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Revenues: (1) Builder operations Central $ 79,168 $ 68,892 $ 163,593 $ 141,338 Southeast 95,886 77,728 173,059 130,446 Total builder operations 175,054 146,620 336,652 271,784 Land development 8,452 10,692 15,482 14,691 Total revenues $ 183,506 $ 157,312 $ 352,134 $ 286,475 Gross profit (loss): Builder operations Central $ 17,903 $ 18,827 $ 36,020 $ 39,362 Southeast 24,855 21,863 44,142 35,713 Total builder operations 42,758 40,690 80,162 75,075 Land development 2,119 3,164 3,902 4,449 Corporate, other and unallocated (2) (4,596 ) (2,783 ) (8,417 ) (5,819 ) Total gross profit $ 40,281 $ 41,071 $ 75,647 $ 73,705 Three Months Ended June 30, Six Months Ended June 30, (in thousands) 2019 2018 2019 2018 Income (loss) before income taxes: Builder operations Central $ 6,916 $ 9,942 $ 13,854 $ 21,042 Southeast 14,962 13,351 24,114 21,329 Total builder operations 21,878 23,293 37,968 42,371 Land development 1,622 2,664 4,299 3,683 Corporate, other and unallocated (3) (2,044 ) (1,727 ) (5,492 ) (5,213 ) Total income before income taxes $ 21,456 $ 24,230 $ 36,775 $ 40,841 June 30, 2019 December 31, 2018 Inventory: Builder operations Central $ 198,866 $ 160,980 Southeast 174,581 159,616 Total builder operations 373,447 320,596 Land development 323,406 329,105 Corporate, other and unallocated (4) 23,025 19,260 Total inventory $ 719,878 $ 668,961 Goodwill: (5) 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 controlled builders have revenues from land or lot closings, which for the three and six months ended June 30, 2019 was $0.0 million , compared to $0.4 million and $4.3 million for the three and six months ended June 30, 2018 , respectively. (2) Corporate, other and unallocated gross loss is comprised of capitalized overhead and capitalized interest adjustments that are not allocated to operating segments. (3) Corporate, other and unallocated 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. (5) In connection with the GRBK GHO business combination, the Company recorded goodwill of $0.7 million .

Significant Accounting Polici_3

Significant Accounting Policies Leases, Adoption of ASC 842 (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Leases [Abstract]
Operating Lease, Liability	$ 3,751	$ 4,200	$ 0
Operating Lease, Right-of-Use Asset	$ 3,727	4,100	$ 0
Deferred Rent Credit		$ 100

Business Combination (Narrativ

Business Combination (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Payment for Contingent Consideration Liability, Investing Activities			$ 1,800
Redeemable Noncontrolling Interest, Equity, Common, Carrying Amount	$ 12,509		12,509		$ 8,531
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest			1,665
Temporary Equity, Interest in Subsidiary Earnings			(527)	$ 0
Noncontrolling Interest, Change in Redemption Value			2,840
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, Low	1,900		1,900
Assets acquired
Goodwill	680		680		$ 680
Liabilities assumed
Contingent consideration	3,500		3,500
Homebuilding revenues	183,506	$ 157,312	352,134	286,475
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	$ 21,456	$ 24,230	$ 36,775	$ 40,841
GHO Homes [Member]
Liabilities assumed
Percent of equity interests acquired	80.00%		80.00%
Ownership percentage by noncontrolling owners	20.00%		20.00%

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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income attributable to Green Brick Partners, Inc.	$ 14,460	$ 14,869	$ 27,065	$ 26,072
Weighted-average number of shares outstanding —basic (in shares)	50,655	50,664	50,609	50,620
Basic net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 0.29	$ 0.29	$ 0.53	$ 0.52
Dilutive effect of stock options and restricted stock awards (in shares)	69	119	56	131
Weighted-average number of shares outstanding —diluted (in shares)	50,724	50,783	50,665	50,751
Diluted net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 0.29	$ 0.29	$ 0.53	$ 0.51

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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Antidilutive options to purchase common stock and restricted stock awards (in shares)	35	9	28	19

Inventory (Details)

Inventory (Details) $ in Thousands, number in Millions	Jun. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Inventory Disclosure [Abstract]
Finished Homes and Homes under Construction	$ 303,924	$ 268,763
Inventory, Real Estate, Land and Land Development Costs	415,561	399,809
Inventory, Land Held-for-sale	393	389
Total inventory	$ 719,878	$ 668,961
Inventory Operative Builders With Potential Indicators Of Impairment	14.7

Inventory (Capitalization of In

Inventory (Capitalization of Interest) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Real Estate Inventory, Capitalized Interest Costs [Roll Forward]
Interest capitalized at beginning of period	$ 16,526	$ 11,221	$ 14,780	$ 10,474
Interest incurred	3,128	2,006	6,014	3,634
Interest charged to cost of revenues	(2,455)	(1,084)	(3,595)	(1,965)
Interest capitalized at end of period	$ 17,199	$ 12,143	$ 17,199	$ 12,143

Revenue Recognition (Narrative)

Revenue Recognition (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 8,037,000	$ 5,428,000	$ 11,522,000	$ 7,252,000
Revenue recognized from performance obligations satisfied in prior periods			$ 0
Individual Counterparty [Member]
Disaggregation of Revenue [Line Items]
Duration of contract with customer (less than)	1 year		1 year
Residential Real Estate [Member] | Individual Counterparty [Member]
Disaggregation of Revenue [Line Items]
Revenue recognized	$ 7,180,000	$ 5,423,000	$ 9,840,000	$ 7,016,000

Revenue Recognition (Disaggrega

Revenue Recognition (Disaggregation of Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenues	$ 183,506	$ 157,312	$ 352,134	$ 286,475
Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	175,054	146,180	336,642	267,444
Residential Real Estate [Member] | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	172,490	143,878	331,723	264,244
Residential Real Estate [Member] | Transferred over Time [Member]
Disaggregation of Revenue [Line Items]
Total revenues	2,564	2,302	4,919	3,200
Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	8,452	11,132	15,492	19,031
Real Estate, Other [Member] | Transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenues	8,452	11,132	15,492	19,031
1531 Operative Builders [Member] | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
1531 Operative Builders [Member] | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	8,452	10,692	15,492	18,591
Individual Counterparty [Member] | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	175,054	146,180	336,642	267,444
Individual Counterparty [Member] | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	440	0	440
Central | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	79,168	68,892	163,593	141,338
Central | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	8,452	10,692	15,482	14,691
Southeast [Domain] | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	95,886	77,288	173,049	126,106
Southeast [Domain] | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	440	10	4,340
Land development
Disaggregation of Revenue [Line Items]
Total revenues	8,452	10,692	15,482	14,691
Land development | Residential Real Estate [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Builder operations
Disaggregation of Revenue [Line Items]
Total revenues	175,054	146,620
Builder operations | Real Estate, Other [Member]
Disaggregation of Revenue [Line Items]
Total revenues		400	0	4,300
Builder operations | Land and Lots [Member]
Disaggregation of Revenue [Line Items]
Total revenues	0	0	0	0
Builder operations | Central
Disaggregation of Revenue [Line Items]
Total revenues	79,168	68,892
Builder operations | Southeast [Domain]
Disaggregation of Revenue [Line Items]
Total revenues	$ 95,886	$ 77,728	$ 173,059	$ 130,446

Revenue Recognition (Opening an

Revenue Recognition (Opening and Closing Contract Balances Included in Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Revenue from Contract with Customer [Abstract]
Customer and builder deposits	$ 31,578	$ 31,978

Revenue Recognition (Deposits R

Revenue Recognition (Deposits Recognized as Revenue) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total deposits recognized as revenue	$ 8,037	$ 5,428	$ 11,522	$ 7,252
Residential Real Estate [Member] | Individual Counterparty [Member]
Disaggregation of Revenue [Line Items]
Total deposits recognized as revenue	7,180	5,423	9,840	7,016
Residential Real Estate [Member] | 1531 Operative Builders [Member]
Disaggregation of Revenue [Line Items]
Total deposits recognized as revenue	$ 857	$ 5	$ 1,682	$ 236

Revenue Recognition (Transactio

Revenue Recognition (Transaction Price Allocated to Remaining Performance Obligations) (Details) $ in Thousands	Jun. 30, 2019USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2018-07-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 21,410
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2019-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	27,871
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	10,865
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: (nil)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Remaining performance obligations	$ 60,146

Investment in Unconsolidated _3

Investment in Unconsolidated Entities (Summary of Financial Information of Investment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Assets:
Cash	$ 9,260		$ 9,260		$ 14,584
Accounts receivable	3,525		3,525		1,259
EquityMethodInvestmentsSummarizedFinancialInformationBondsReceivable	5,864		5,864		5,864
EquityMethodInvestmentSummarizedFinancialInformationLoansHeldForSale	8,266		8,266		3,083
Inventory	51,291		51,291		44,375
Other assets	4,390		4,390		3,132
Total assets	82,596		82,596		72,297
Liabilities:
Accounts payable	3,247		3,247		2,173
Accrued expenses and other liabilities	8,086		8,086		5,328
Notes payable	33,991		33,991		31,402
Total liabilities	45,324		45,324		38,903
Owners’ equity:
Green Brick	18,582		18,582		15,653
Others	18,690		18,690		17,741
Total owners’ equity	37,272		37,272		33,394
Total liabilities and owners’ equity	82,596		82,596		$ 72,297
Statements of Income (Unaudited)
Revenues	43,261	$ 43,953	74,358	$ 76,952
Costs and expenses	37,804	39,099	65,121	69,020
Net earnings of unconsolidated entities	5,457	4,854	9,237	7,932
Company’s share in net earnings of unconsolidated entities	$ 2,697	$ 2,279	$ 4,543	$ 3,815

Investment in Unconsolidated _4

Investment in Unconsolidated Entities (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
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
Investment in unconsolidated entities	23,139		23,139		$ 20,269
Equity in income of unconsolidated entity	$ 2,697	$ 2,279	$ 4,543	$ 3,815

Debt (Schedule of Lines of Cred

Debt (Schedule of Lines of Credit Outstanding) (Details) - USD ($)	Jun. 30, 2019	Dec. 31, 2018	Dec. 15, 2015	Jul. 30, 2015
Line of Credit Facility [Line Items]
Long-term Line of Credit	$ 232,657,000	$ 200,386,000
Debt issuance costs, net of amortization	(1,343,000)	(1,614,000)
Letters of Credit Outstanding, Amount	2,000,000	2,200,000
Line of Credit Facility, Remaining Borrowing Capacity	73,100,000
Unsecured Debt [Member]
Line of Credit Facility [Line Items]
Long-term Line of Credit	215,000,000		$ 40,000,000
Line of Credit Facility, Maximum Borrowing Capacity	275,000,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Long-term Line of Credit	55,500,000	46,500,000
Line of Credit Facility, Maximum Borrowing Capacity	75,000,000			$ 50,000,000
Letters of Credit Outstanding, Amount	1,900,000
Unsecured Debt [Member]
Line of Credit Facility [Line Items]
Long-term Line of Credit	$ 178,500,000	$ 155,500,000

Debt (Narrative) (Details)

Debt (Narrative) (Details) - USD ($)	Aug. 01, 2019	Jun. 30, 2019	Dec. 31, 2018	Dec. 15, 2015	Jul. 30, 2015
Debt Instrument [Line Items]
Costs associated with amendment		$ 1,343,000	$ 1,614,000
Borrowings on lines of credit		232,657,000	200,386,000
Unsecured Debt [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		275,000,000
Borrowings on lines of credit		$ 215,000,000		$ 40,000,000
Unsecured Debt [Member] | Minimum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End		4.88%
Unsecured Debt [Member] | Maximum [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End		4.92%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 75,000,000			$ 50,000,000
Borrowings on lines of credit		$ 55,500,000	$ 46,500,000
Line of Credit Facility, Interest Rate at Period End		5.25%
Revolving Credit Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Interest Rate at Period End	5.00%

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Common Stock, Shares, Issued	50,879,949	50,719,884	50,879,949	50,719,884	50,820,548	50,719,884	50,685,699	50,598,901
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)			50,583,128
Beginning balance	$ 485,657	$ 439,068	$ 485,632	$ 433,038
Ending balance (in shares)	50,696,011		50,696,011
Ending balance	$ 498,643	455,532	$ 498,643	455,532
Common stock, $0.01 par value: 100,000,000 shares authorized; 50,879,949 and 50,719,884 issued and 50,696,011 and 50,583,128 outstanding as of June 30, 2019 and December 31, 2018, respectively	$ 509	$ 507	$ 509	$ 507	$ 508	$ 507	$ 507	$ 506
Treasury Stock, Common, Shares	(183,938)	0	(183,938)	0	(144,618)	(136,756)	0	0
Treasury Stock, Value	$ (1,369)	$ 0	$ (1,369)	$ 0	$ (1,041)	$ (981)	$ 0	$ 0
Additional Paid in Capital	289,739	290,842	289,739	290,842	291,271	291,299	290,773	289,938
Retained Earnings (Accumulated Deficit)	204,591	151,975	204,591	151,975	190,131	177,526	137,106	125,903
Stockholders' Equity Attributable to Parent	493,470	443,324	493,470	443,324	480,869	468,351	428,386	416,347
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition	$ 71	$ 72	$ 142	$ 143
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	59,401	34,185	219,181	140,211
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 1	$ 0	$ 1,467	$ 1,081
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(59,116)	(39,228)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ (545)	$ (412)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 117	101	$ 218	$ 197
Treasury Stock, Shares, Acquired	(39,320)		(47,182)	0
Treasury Stock, Value, Acquired, Cost Method	$ (328)		$ (388)	$ 0
Stockholders' Equity Attributable to Noncontrolling Interest	5,173	12,208	5,173	12,208	$ 4,788	$ 17,281	$ 10,682	$ 16,691
Payments to Noncontrolling Interests			10,993	10,423
Stock Issued During Period, Value, Acquisitions			0
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	(258)	(2,378)	(10,993)	(10,423)
Net income attributable to Green Brick Partners, Inc.	14,460	14,869	27,065	26,072
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest	643	3,904	(1,115)	5,940
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	15,103	18,773	25,950	32,012
Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	1	0	3	1
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			1	0
Additional Paid-in Capital [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	0	0	1,464	1,080
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			(544)	412
Temporary Equity, Accretion to Redemption Value, Adjustment	$ (1,720)	$ (104)	$ (2,840)	$ (104)

Stockholders' Equity (Narrative

Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	Aug. 05, 2019	Jul. 31, 2019	Jan. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Class of Stock [Line Items]
Stock Repurchased During Period, Shares			7,862	39,320
Stock Repurchased During Period, Value			$ 0.1	$ 0.3
Common stock, shares authorized (in shares)				100,000,000		100,000,000
Common stock, par value (in dollars per share)				$ 0.01		$ 0.01
Common Stock, Shares, Issued				50,879,949	50,820,548	50,719,884	50,719,884	50,685,699	50,598,901
Common stock, shares outstanding (in shares)				50,696,011		50,583,128
Preferred stock, shares authorized (in shares)				5,000,000		5,000,000
Preferred stock, par value (in dollars per share)				$ 0.01		$ 0.01
Preferred stock, shares issued (in shares)				0		0
Preferred stock, shares outstanding (in shares)				0		0
GHO Homes [Member]
Class of Stock [Line Items]
Ownership percentage by noncontrolling owners				20.00%
Subsequent Event [Member]
Class of Stock [Line Items]
Stock Repurchased During Period, Shares		144,584
Stock Repurchased During Period, Value		$ 1.2
Stock Repurchase Program Expiration Date	Aug. 5, 2019

Stockholders' Equity (Schedule

Stockholders' Equity (Schedule of Changes in Redeemable Noncontrolling Interest) (Details) $ in Thousands	Jun. 30, 2019USD ($)
Increase (Decrease) in Temporary Equity [Roll Forward]
Balance as of beginning of period	$ 8,531
Balance as of end of period	$ 12,509

Share-Based Compensation (Narra

Share-Based Compensation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			59,116	39,228
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation			$ 545	$ 412
Stock options granted (in shares)			0
Share-based compensation expense	$ 200	$ 200	$ 1,827	$ 1,421
Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized	500		$ 500
Period for recognition			10 months 24 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost not yet recognized	$ 100		$ 100
Period for recognition			3 months 18 days
Named Executive Officers | Restricted Stock Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of awards vested and forfeitable at time of grant			100.00%

Share-Based Compensation (Summa

Share-Based Compensation (Summary of Share-Based Awards Activity) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Expense, Tax Benefit	$ 0	$ 0	$ 0.4	$ 0.3
Number of Shares
Nonvested, beginning of period (in shares)			34
Granted (in shares)			219
Vested (in shares)			(194)
Forfeited (in shares)			0
Nonvested, end of period (in shares)	59		59
Weighted Average Grant Date Fair Value per Share
Nonvested, beginning of period (in dollars per share)			$ 12
Granted (in dollars per share)			9.14
Vested (in dollars per share)			9.67
Forfeited (in dollars per share)			0
Nonvested, end of period (in dollars per share)	$ 9.05		$ 9.05

Share-Based Compensation (Sum_2

Share-Based Compensation (Summary of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2019USD ($)$ / sharesshares
Number of Shares
Options outstanding, beginning balance (in shares) | shares	500
Granted (in shares) | shares	0
Exercised (in shares) | shares	0
Forfeited (in shares) | shares	0
Options outstanding, ending balance (in shares) | shares	500
Options exercisable (in shares) | shares	400
Weighted Average Exercise Price per Share
Options outstanding, beginning balance (in dollars per share) | $ / shares	$ 7.49
Granted (in dollars per share) | $ / shares	0
Exercised (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	0
Options outstanding, ending balance (in dollars per share) | $ / shares	7.49
Options exercisable (in dollars per share) | $ / shares	$ 7.49
Options outstanding, weighted average remaining contractual term (in years)	5 years 3 months 29 days
Options exercisable, weighted average remaining contractual term (in years)	5 years 3 months 29 days
Options outstanding, aggregate intrinsic value | $	$ 410
Options exercisable, aggregate intrinsic value | $	$ 328

Share-Based Compensation (Sum_3

Share-Based Compensation (Summary of Unvested Stock Options Activity) (Details) shares in Thousands	6 Months Ended
	Jun. 30, 2019$ / sharesshares
Number of Shares
Unvested, beginning balance (in shares) | shares	100
Granted (in shares) | shares	0
Vested (in shares) | shares	0
Forfeited (in shares) | shares	0
Unvested, ending balance (in shares) | shares	100
Weighted Average Grant Date Fair Value per Share
Unvested, beginning balance (in dollars per share) | $ / shares	$ 2.88
Granted (in dollars per share) | $ / shares	0
Vested (in dollars per share) | $ / shares	0
Forfeited (in dollars per share) | $ / shares	0
Unvested, ending balance (in dollars per share) | $ / shares	$ 2.88

Income Taxes (Narrative) (Detai

Income Taxes (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income tax expense	$ 5,332	$ 5,235	$ 9,160	$ 8,607

Related Party Transactions (Det

Related Party Transactions (Details)	3 Months Ended		6 Months Ended		40 Months Ended
	Jun. 30, 2019USD ($)board_seat	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)board_seat	Jun. 30, 2018USD ($)	Jun. 30, 2019USD ($)board_seat	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2017USD ($)	Mar. 31, 2016townhome
Related Party Transaction [Line Items]
Noncontrolling interests	$ 5,173,000	$ 12,208,000	$ 5,173,000	$ 12,208,000	$ 5,173,000	$ 4,788,000	$ 17,281,000	$ 10,682,000	$ 16,691,000
Lots Remaining To Be Sold	0		0		0
Suwanee Station
Related Party Transaction [Line Items]
Board seats held | board_seat	2		2		2
Board seats available | board_seat	3		3		3
Centre Living
Related Party Transaction [Line Items]
Ownership percentage by parent	50.00%		50.00%		50.00%
Ownership percentage by noncontrolling owners	50.00%		50.00%		50.00%
Percentage of voting interest	51.00%		51.00%		51.00%
Investee | Suwanee Station
Related Party Transaction [Line Items]
Number of real estate properties | townhome										73
Payments of Capital Distribution	$ 500,000	$ 0	$ 900,000	$ 700,000	$ 3,300,000
Number of Lots Purchased	7	3	13	11
Lots Purchased, Cost	$ 300,000	$ 200,000	$ 500,000	$ 700,000
Investee | Suwanee Station | Green Brick Partners, Inc. [Member]
Related Party Transaction [Line Items]
Payments of Capital Distribution	300,000	$ 0	500,000	$ 300,000
Investee | Suwanee Station | Parent Company [Member]
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage										50.00%
Investee | Suwanee Station | Affiliated Entity
Related Party Transaction [Line Items]
Equity Method Investment, Ownership Percentage										50.00%
Affiliated Entity | Office Space Lease Agreements | GHO Homes [Member]
Related Party Transaction [Line Items]
Amounts due to affiliates	0		0		0
Affiliated Entity | Title Closing Services | GHO Homes [Member]
Related Party Transaction [Line Items]
Amounts due to affiliates	$ 0		$ 0		$ 0

Fair Value Measurements (Schedu

Fair Value Measurements (Schedule of Carrying Value and Estimated Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 618		$ 618		$ 2,207
Payment for Contingent Consideration Liability, Financing Activities			(514)	$ 0
Payment for Contingent Consideration Liability, Operating Activities			(1,332)	0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	$ (197)	$ 0	$ 257	$ 0

Commitments and Contingencies

Commitments and Contingencies (Warranty activity) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Letters of Credit Outstanding, Amount	$ 2,000		$ 2,000		$ 2,200
Accrued Expenses
Movement in Standard Product Warranty Accrual [Roll Forward]
Warranty accrual, beginning of period	2,627	$ 2,236
Warranties issued	768	709	1,421	$ 1,113
Settlements	(544)	(393)	(1,406)	(640)
Warranty accrual, end of period	2,898	$ 2,539	2,898	$ 2,539
Performance Bonds
Product Warranty Liability [Line Items]
Amount of performance bonds outstanding	$ 4,700		$ 4,700		$ 5,300

Commitments and Contingencies_2

Commitments and Contingencies (Schedule of Annual Minimum Operating Lease Payments) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Operating Lease, Liability	$ 3,751	$ 4,200	$ 0
Remainder of 2019	599
Operating Leases, Future Minimum Payments, Due in Two Years	1,235
Lessee, Operating Lease, Liability, Payments, Due Year Three	1,011
2021	734
Lessee, Operating Lease, Liability, Payments, Due Year Five	558
Total future lease payments	$ 4,137

Commitments and Contingencies_3

Commitments and Contingencies (Schedule of Expected Land and Lot Purchase Payments Under Option Agreements) (Details) $ in Thousands	Jun. 30, 2019USD ($)lot	Dec. 31, 2018lot
Commitments and Contingencies Disclosure [Abstract]
Lots under option | lot	3,050	1,843
Remainder of 2019	$ 73,528
2019	76,120
2020	31,275
2021	3,739
Total	$ 184,662

Commitments and Contingencies O

Commitments and Contingencies Operating Leases Disclosures - ASC 842 (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Leases [Abstract]
Earnest Money Deposits and Pre-acquisition Costs Written-Off	$ 0	$ 0	$ 0.5	$ 0.1
Short-term Lease, Cost	0.1
Operating Lease, Expense	0.3		0.6
Operating Lease, Payments	$ 0.3		$ 0.6
Operating Lease, Weighted Average Remaining Lease Term	3 years 8 months 12 days		3 years 8 months 12 days
Operating Lease, Weighted Average Discount Rate, Percent	5.25%		5.25%

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Entity Emerging Growth Company			false
Revenues:
Total revenues	$ 183,506	$ 157,312	$ 352,134	$ 286,475
Gross profit:
Gross Profit	40,281	41,071	75,647	73,705
Income (loss) before income taxes:
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	21,456	24,230	36,775	40,841
Inventory:
Total inventory	719,878		719,878		$ 668,961
Goodwill: (5)
Goodwill	680		680		680
Builder operations
Revenues:
Total revenues	175,054	146,620
Gross profit:
Gross Profit	42,758	40,690	80,162	75,075
Income (loss) before income taxes:
Results of Operations, Income before Income Taxes	21,878	23,293	37,968	42,371
Inventory:
Total inventory	373,447		373,447		320,596
Builder operations | Southeast [Domain]
Revenues:
Total revenues	95,886	77,728	173,059	130,446
Gross profit:
Gross Profit	24,855	21,863	44,142	35,713
Income (loss) before income taxes:
Results of Operations, Income before Income Taxes	14,962	13,351	24,114	21,329
Inventory:
Total inventory	174,581		174,581		159,616
Goodwill: (5)
Goodwill	680		680		680
Builder operations | Central
Revenues:
Total revenues	79,168	68,892
Gross profit:
Gross Profit	17,903	18,827	36,020	39,362
Income (loss) before income taxes:
Results of Operations, Income before Income Taxes	6,916	9,942	13,854	21,042
Inventory:
Total inventory	198,866		198,866		160,980
Land development
Revenues:
Total revenues	8,452	10,692	15,482	14,691
Gross profit:
Gross Profit	2,119	3,164	3,902	4,449
Income (loss) before income taxes:
Results of Operations, Income before Income Taxes	1,622	2,664	4,299	3,683
Inventory:
Total inventory	323,406		323,406		329,105
Corporate and Other [Member]
Gross profit:
Other General Expense	(4,596)	(2,783)
Income (loss) before income taxes:
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(2,044)	(1,727)	(5,492)	(5,213)
Inventory:
Total inventory	23,025		23,025		$ 19,260
Real Estate, Other [Member]
Revenues:
Total revenues	8,452	11,132	15,492	19,031
Real Estate, Other [Member] | Southeast [Domain]
Revenues:
Total revenues	0	440	10	4,340
Real Estate, Other [Member] | Central
Revenues:
Total revenues	$ 8,452	10,692	15,482	14,691
Real Estate, Other [Member] | Builder operations
Revenues:
Total revenues		$ 400	$ 0	$ 4,300

Variable Interest Entities Vari

Variable Interest Entities Variable Interest Entities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Dec. 31, 2018
Variable Interest Entity, Consolidated, Assets, Pledged [Abstract]
Variable Interest Entity Disclosure [Text Block]	3. VARIABLE INTEREST ENTITIES Our controlled builders’ creditors have no recourse against us. As of June 30, 2019 , the assets of two of our consolidated controlled builders can only be used to settle obligations of those controlled builders. The assets of our VIEs that can be used only to settle obligations of the VIEs as of June 30, 2019 totaled $82.6 million , of which $0.9 million was cash and $73.1 million was inventory. The assets of our VIEs that could be used only to settle obligations of the VIEs as of December 31, 2018 totaled $76.3 million , of which $0.7 million was cash and $66.6 million was inventory. However, as we have voting control over these builders, it is ultimately within the control of Green Brick Partners, Inc. whether the assets of these VIEs are utilized to settle obligations of Green Brick Partners, Inc.
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Assets, Pledged	$ 82.6	$ 76.3
Cash [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Assets, Pledged	0.9	0.7
Inventories [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Consolidated, Assets, Pledged	$ 73.1	$ 66.6

Subsequent Events (Details)

Subsequent Events (Details) - USD ($) $ in Thousands	Aug. 08, 2019	Jul. 31, 2019	Jun. 30, 2019	Jun. 30, 2018	Aug. 08, 2026	Aug. 08, 2025	Aug. 08, 2024	Jul. 23, 2019
Subsequent Event [Line Items]
Subsequent Events [Text Block]			In July 2019, a homebuilding customer forfeited $2.4 million of earnest money deposits related to the purchase of finished lots. The forfeiture was recognized as other income subsequent to June 30, 2019. On July 23, 2019, an irrevocable letter of credit of $1.3 million was issued by Inwood National Bank, which further reduced the aggregate maximum commitment amount of the Credit Facility to $71.8 million . Effective August 1, 2019, the interest rate on outstanding borrowings under the Credit Facility changed to 5.00% per annum, due to the change in the Prime Rate of the Bank of America, N.A. On August 8, 2019, the Company issued $75.0 million of senior unsecured notes due on August 8, 2026 at a fixed rate of 4.00% per annum to Prudential Private Capital in a Section 4(a)(2) private placement transaction and received proceeds of $73.3 million . A brokerage fee of approximately $1.5 million associated with the issuance was paid at closing. The brokerage fee, and other debt issuance costs of approximately $0.2 million , will be deferred and will reduce the amount of debt on our consolidated balance sheet. The Company will capitalize these costs to inventory over the term of the senior unsecured notes using the straight-line method. The Company repaid $56.0 million of existing debt with a portion of the net proceeds on August 8, 2019 and expects to use all of the remaining proceeds from the issuance of the senior unsecured notes to further repay borrowings under the Company’s existing revolving credit facilities. Principal on the senior unsecured 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 will be payable quarterly in arrears commencing November 8, 2019. Under the terms of the senior unsecured notes, the Company is required, among other things, to maintain compliance with various financial covenants, including maximum leverage ratios, a minimum interest coverage ratio, and a minimum consolidated tangible net worth. The senior unsecured notes are guaranteed by the Company’s significant subsidiaries and certain other subsidiaries. The senior unsecured notes will rank equally in right of prepayment with all of the Company’s existing and future senior unsecured and unsubordinated indebtedness.
Payments of Debt Issuance Costs			$ 0	$ 150
Repayments of Lines of Credit			61,500	$ 35,000
Line of Credit Facility, Remaining Borrowing Capacity			$ 73,100
Subsequent Event [Member]
Subsequent Event [Line Items]
Senior Notes	$ 75,000
Letters of Credit Issued								$ 1,300
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Noninterest Income, Other Operating Income		$ 2,400
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five					$ 50,000	$ 12,500	$ 12,500
Debt Instrument, Fee Amount	$ 1,500
Proceeds from Issuance of Senior Long-term Debt	73,300
Payments of Debt Issuance Costs	200
Repayments of Lines of Credit	$ 56,000
Line of Credit Facility, Remaining Borrowing Capacity								$ 71,800