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Document and Entity Information
Dec. 22, 2020
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001373670
Document Type 8-K
Document Period End Date Dec. 22, 2020
Entity Registrant Name Green Brick Partners, Inc.
Entity Incorporation State Country Code DE
Entity File Number 001-33530
Entity Tax Identification Number 20-5952523
Entity Address, Address Line One 2805 Dallas Pkwy
Entity Address, Address Line Two Ste 400
Entity Address, City or Town Plano
Entity Address, State or Province TX
Entity Address, Postal Zip Code 75093
City Area Code (469)
Local Phone Number 573-6755
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, par value $0.01 per share
Trading Symbol GRBK
Security Exchange Name NASDAQ
Entity Emerging Growth Company false