Statement of Shareholders' Equity (Statement) - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Common Stock [Member]	Retained Earnings	Noncontrolling Interest	Treasury Stock, Common	Parent
Common stock, shares issued (in shares)	46,032,930
Common Stock, Value, Issued	$ 460
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	$ 47,696
Preferred stock, shares outstanding (in shares)	2,000
Treasury Stock, Common, Shares	0
Treasury Stock, Value	$ 0
Additional paid-in capital	259,410
Retained Earnings (Accumulated Deficit)	754,341
Stockholders' Equity Attributable to Parent	1,061,907
Stockholders' Equity Attributable to Noncontrolling Interest	20,908
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,082,815
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	(208,882)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition							$ 1,393
Dividends	$ (2,156)			$ (2,156)			(2,156)
Stock Repurchased During Period, Value	(27,991)						(27,991)
Stock Repurchased and Retired During Period, Shares			803,591			803,591
Treasury Stock, Retired, Cost Method, Amount		$ (4,592)		(23,391)		$ (27,991)
Net income attributable to Green Brick Partners, Inc.	211,606			211,606			211,606
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					$ 9,579
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	221,185
Temporary Equity, Accretion to Redemption Value, Adjustment	(2,706)	(2,706)					(2,706)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ (5,232)	(5,230)	$ (2)				(5,232)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(59,857)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (1,976)	1,976	0				(1,976)
Stock Repurchased During Period, Shares	(803,591)
Stock Repurchased and Retired During Period, Value			$ (8)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ 14,056				14,056
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition	$ 1,393	1,393
Common stock, shares issued (in shares)	45,378,678
Common Stock, Value, Issued	$ 454
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	$ 47,696
Preferred stock, shares outstanding (in shares)	2,000
Additional paid-in capital	$ 256,965
Retained Earnings (Accumulated Deficit)	868,962
Stockholders' Equity Attributable to Parent	1,174,077
Stockholders' Equity Attributable to Noncontrolling Interest	16,148
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,190,225
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			(314)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	363	363					363
Dividends	(718)			(718)			(718)
Noncontrolling Interest, Change in Redemption Value	569
Net income attributable to Green Brick Partners, Inc.	72,156			72,156			72,156
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					3,283
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	75,439
Temporary Equity, Accretion to Redemption Value, Adjustment	$ (569)	(569)					(569)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders					3,000
Common stock, shares issued (in shares)	45,378,364
Common Stock, Value, Issued	$ 454
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	$ 47,603
Preferred stock, shares outstanding (in shares)	2,000
Preferred Stock, Value, Outstanding	$ 47,603
Treasury Stock, Common, Shares	0
Treasury Stock, Value	$ 0
Additional paid-in capital	256,759
Retained Earnings (Accumulated Deficit)	940,400
Stockholders' Equity Attributable to Parent	1,245,216
Stockholders' Equity Attributable to Noncontrolling Interest	16,431
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,261,647
Common stock, shares issued (in shares)	45,005,175
Common Stock, Value, Issued	$ 450
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	$ 47,603
Preferred stock, shares outstanding (in shares)	2,000
Treasury Stock, Common, Shares	0
Treasury Stock, Value	$ 0
Additional paid-in capital	255,614
Retained Earnings (Accumulated Deficit)	997,037
Stockholders' Equity Attributable to Parent	1,300,704
Stockholders' Equity Attributable to Noncontrolling Interest	17,309
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,318,013
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			(639,079)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	1,865	1,865					1,865
Dividends	(2,156)			(2,156)			(2,156)
Stock Repurchased During Period, Value	(48,035)					$ (48,035)	(48,035)
Stock Repurchased and Retired During Period, Shares			860,659			860,659
Treasury Stock, Retired, Cost Method, Amount		(4,865)		(43,161)		$ (48,035)
Noncontrolling Interest, Change in Redemption Value	(3,924)	(3,924)					(3,924)
Net income attributable to Green Brick Partners, Inc.	277,770			277,770			277,770
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					18,781
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	296,551
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(5,850)	(5,843)	$ (7)				(5,850)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(285,347)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	(11,337)	(11,334)	$ 3				(11,337)
Stock Repurchased During Period, Shares						(860,659)
Stock Repurchased and Retired During Period, Value			$ (9)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ 11,785				11,785
Common stock, shares issued (in shares)	44,897,775
Common Stock, Value, Issued	$ 449
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	$ 47,603
Preferred stock, shares outstanding (in shares)	2,000
Treasury Stock, Common, Shares	(303,324)
Treasury Stock, Value	$ 17,192
Additional paid-in capital	246,863
Retained Earnings (Accumulated Deficit)	1,161,512
Stockholders' Equity Attributable to Parent	1,439,235
Stockholders' Equity Attributable to Noncontrolling Interest	24,518
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,463,753
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			(2,302)
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	572	572					572
Dividends	(719)			(719)			(719)
Stock Repurchased During Period, Value	(5,445)					$ (5,445)	(5,445)
Stock Repurchased and Retired During Period, Shares			401,003
Treasury Stock, Retired, Cost Method, Amount	0	(2,219)	$ (4)	(20,414)		$ (22,637)	0
Noncontrolling Interest, Change in Redemption Value	(1,958)	(1,958)					(1,958)
Net income attributable to Green Brick Partners, Inc.	89,111			$ 89,111			89,111
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					4,787
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	93,898
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture		0	$ 0
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(826)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (59)	$ (59)	$ 0				$ 59
Stock Repurchased During Period, Shares						(97,679)
Treasury Stock, Shares, Retired						401,003
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders					$ 5,000
Common stock, shares issued (in shares)	44,498,248
Common Stock, Value, Issued	$ 445
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	$ 47,603
Preferred stock, shares outstanding (in shares)	2,000
Preferred Stock, Value, Outstanding	$ 47,603
Treasury Stock, Common, Shares	0
Treasury Stock, Value	$ 0
Additional paid-in capital	243,199
Retained Earnings (Accumulated Deficit)	1,229,490
Stockholders' Equity Attributable to Parent	1,520,737
Stockholders' Equity Attributable to Noncontrolling Interest	24,305
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,545,042