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)	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 June 30, 2025 and December 31, 2024, 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	636,777
APIC, Share-based Payment Arrangement, Increase for Cost Recognition							$ 1,292
Dividends	$ (1,438)			$ (1,438)			(1,438)
Stock Repurchased During Period, Value	(42,590)						(42,590)
Stock Repurchased and Retired During Period, Shares			459,656			459,656
Treasury Stock, Retired, Cost Method, Amount		$ (2,647)		(22,746)		$ (25,398)
Noncontrolling Interest, Change in Redemption Value	1,965	1,965					1,965
Net income attributable to Green Brick Partners, Inc.	188,659			188,659			188,659
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					$ 13,994
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	202,653
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ (5,849)	(5,843)	$ (6)				(5,849)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	(284,521)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (11,276)	11,274	2				(11,276)
Stock Repurchased During Period, Shares	(762,980)
Stock Repurchased and Retired During Period, Value			$ (5)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (6,785)				(6,785)
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition	$ 1,292	1,292
Common stock, shares issued (in shares)	45,096,392
Common Stock, Value, Issued	$ 451
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of June 30, 2025 and December 31, 2024, respectively	$ 47,603
Preferred stock, shares outstanding (in shares)	2,000
Treasury Stock, Common, Shares	(71,241)
Treasury Stock, Value	$ 3,758
Additional paid-in capital	259,412
Retained Earnings (Accumulated Deficit)	1,079,619
Stockholders' Equity Attributable to Parent	1,383,327
Stockholders' Equity Attributable to Noncontrolling Interest	16,364
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,399,691
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			500,000
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	779	779					779
Dividends	(719)			(719)			(719)
Stock Repurchased During Period, Value	(38,832)					$ (38,832)	(38,832)
Stock Repurchased and Retired During Period, Shares			459,656			459,656
Treasury Stock, Retired, Cost Method, Amount	0	(2,647)	$ (5)	(22,746)		$ (25,398)	0
Noncontrolling Interest, Change in Redemption Value	(1,565)	(1,565)					(1,565)
Net income attributable to Green Brick Partners, Inc.	105,358			105,358			105,358
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					8,154
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	113,512
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	0	(5)	$ (5)				0
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(238,961)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ (9,113)	(9,111)	$ (2)				9,113
Stock Repurchased During Period, Shares						(691,739)
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 June 30, 2025 and December 31, 2024, respectively	$ 47,603
Preferred stock, shares outstanding (in shares)	2,000
Preferred Stock, Value, Outstanding	$ 47,603
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
Common stock, shares issued (in shares)	44,498,097
Common Stock, Value, Issued	$ 445
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of June 30, 2025 and December 31, 2024, respectively	$ 47,603
Preferred stock, shares outstanding (in shares)	2,000
Treasury Stock, Common, Shares	0
Treasury Stock, Value	$ 0
Additional paid-in capital	244,653
Retained Earnings (Accumulated Deficit)	1,332,714
Stockholders' Equity Attributable to Parent	1,625,415
Stockholders' Equity Attributable to Noncontrolling Interest	28,039
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,653,454
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			147,278
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	2,358	2,358					2,358
Dividends	(1,438)			(1,438)			(1,438)
Stock Repurchased During Period, Value	(60,801)			(65)		$ (60,736)	(60,801)
Stock Repurchased and Retired During Period, Shares			1,027,678			1,027,678
Treasury Stock, Retired, Cost Method, Amount	0	(5,836)		(54,890)		$ (60,736)
Noncontrolling Interest, Change in Redemption Value	1,185	1,185					1,185
Net income attributable to Green Brick Partners, Inc.	157,007			157,007			157,007
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					12,147
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	169,154
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(7,077)	(7,075)	$ (2)				(7,077)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(52,599)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	(3,060)	(3,059)	$ 1				(3,060)
Stock Repurchased During Period, Shares						(1,027,678)
Stock Repurchased and Retired During Period, Value			$ (10)
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (16,624)				(16,624)
Common stock, shares issued (in shares)	44,593,967
Common Stock, Value, Issued	$ 446
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of June 30, 2025 and December 31, 2024, respectively	$ 47,603
Preferred stock, shares outstanding (in shares)	2,000
Treasury Stock, Common, Shares	(282,821)
Treasury Stock, Value	$ 16,919
Additional paid-in capital	252,728
Retained Earnings (Accumulated Deficit)	1,407,054
Stockholders' Equity Attributable to Parent	1,690,912
Stockholders' Equity Attributable to Noncontrolling Interest	22,536
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	1,713,448
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture			0
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	1,389	1,389					1,389
Dividends	(719)			(719)			(719)
Stock Repurchased During Period, Value	(43,882)			(65)		$ (43,817)	(43,882)
Stock Repurchased and Retired During Period, Shares			1,027,678
Treasury Stock, Retired, Cost Method, Amount	0	(5,836)	$ (10)	(54,890)		$ (60,736)	0
Noncontrolling Interest, Change in Redemption Value	(4,203)	(4,203)					(4,203)
Net income attributable to Green Brick Partners, Inc.	81,948			$ 81,948			81,948
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					6,150
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	88,098
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(70)	(71)	$ (1)				(70)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			(1,191)
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	(2)	$ (1)	$ (1)				$ 2
Stock Repurchased During Period, Shares						(744,857)
Treasury Stock, Shares, Retired						1,027,678
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ (5,124)				$ (5,124)
Common stock, shares issued (in shares)	43,565,098
Common Stock, Value, Issued	$ 436
Preferred stock, $0.01 par value: 5,000,000 shares authorized; 2,000 issued and outstanding as of June 30, 2025 and December 31, 2024, 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	244,006
Retained Earnings (Accumulated Deficit)	1,433,328
Stockholders' Equity Attributable to Parent	1,725,373
Stockholders' Equity Attributable to Noncontrolling Interest	23,562
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,748,935