Statement of Shareholders' Equity (Statement) - USD ($) $ in Thousands	Total	Additional Paid-in Capital [Member]	Common Stock [Member]	Retained Earnings	Noncontrolling Interest	Preferred stock GRBK PRA	Parent	Treasury Stock, Common
Treasury Stock, Value	$ 3,167
Common Stock, Shares, Issued	51,151,911
Common stock, $0.01 par value: 100,000,000 shares authorized; 46,211,430 issued and 45,743,555 outstanding as of March 31, 2023 and 46,032,930 issued and outstanding as of December 31, 2022, respectively	$ 512
Treasury Stock, Common, Shares	391,939
Additional Paid in Capital	$ 289,641
Retained Earnings (Accumulated Deficit)	539,866
Stockholders' Equity Attributable to Parent	874,548
Stockholders' Equity Attributable to Noncontrolling Interest	14,146
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 888,694
Preferred stock, shares outstanding (in shares)						2,000
Preferred Stock, Including Additional Paid in Capital						$ 47,696
Common Stock, Shares, Issued	51,151,911
Temporary Equity, Accretion to Redemption Value, Adjustment		$ 557
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 1,075	(1,074)	$ (1)				$ 1,075
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 2,752	2,751	1				2,752
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	139,710
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	46,415
APIC, Share-based Payment Arrangement, Increase for Cost Recognition							280
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	$ 5,718				$ 5,718
Net income attributable to Green Brick Partners, Inc.	61,577			$ 61,577			61,577
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					1,750
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	63,327
Noncontrolling Interest, Change in Redemption Value	(557)
APIC, Share-based Payment Arrangement, Option, Increase for Cost Recognition	280	280
Dividends, Common Stock, Cash	(655)			(655)			(655)
Stock Repurchased During Period, Shares								1,193,037
Stock Repurchased During Period, Value	(25,801)						25,801	$ 25,801
Treasury Stock, Value	$ 28,968
Common Stock, Shares, Issued	51,245,206
Common stock, $0.01 par value: 100,000,000 shares authorized; 46,211,430 issued and 45,743,555 outstanding as of March 31, 2023 and 46,032,930 issued and outstanding as of December 31, 2022, respectively			512
Treasury Stock, Common, Shares	1,584,976
Additional Paid in Capital	$ 292,155
Retained Earnings (Accumulated Deficit)	600,788
Stockholders' Equity Attributable to Parent	912,183
Stockholders' Equity Attributable to Noncontrolling Interest	10,178
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 922,361
Preferred stock, shares outstanding (in shares)						2,000
Preferred Stock, Including Additional Paid in Capital						$ 47,696
Common Stock, Shares, Issued	51,245,206
Treasury Stock, Value	$ 0
Common Stock, Shares, Issued	46,032,930
Common stock, $0.01 par value: 100,000,000 shares authorized; 46,211,430 issued and 45,743,555 outstanding as of March 31, 2023 and 46,032,930 issued and outstanding as of December 31, 2022, respectively	$ 460
Treasury Stock, Common, Shares	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
Preferred stock, shares outstanding (in shares)	2,000					2,000
Preferred Stock, Including Additional Paid in Capital						$ 47,696
Common Stock, Shares, Issued	46,032,930
Share-based Payment Arrangement, Decrease for Tax Withholding Obligation	$ 1,976	(1,975)	(1)				(1,976)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	$ 5,233	5,230	$ 3				5,233
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture	238,357
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation	59,857
APIC, Share-based Payment Arrangement, Increase for Cost Recognition	$ 567	567					567
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	11,056				11,056
Net income attributable to Green Brick Partners, Inc.	64,180			64,180			64,180
Net Income (Loss) Attributable to Nonredeemable Noncontrolling Interest					$ 2,596
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	66,776
Noncontrolling Interest, Change in Redemption Value	313	$ 313					313
Dividends, Common Stock, Cash	(719)			$ (719)			(719)
Stock Repurchased During Period, Shares								467,875
Stock Repurchased During Period, Value	(15,351)						$ 15,351	$ 15,351
Treasury Stock, Value	$ 15,351
Common Stock, Shares, Issued	46,211,430
Common stock, $0.01 par value: 100,000,000 shares authorized; 46,211,430 issued and 45,743,555 outstanding as of March 31, 2023 and 46,032,930 issued and outstanding as of December 31, 2022, respectively	$ 462
Treasury Stock, Common, Shares	467,875
Additional Paid in Capital	$ 263,545
Retained Earnings (Accumulated Deficit)	817,802
Stockholders' Equity Attributable to Parent	1,114,154
Stockholders' Equity Attributable to Noncontrolling Interest	12,448
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 1,126,602
Preferred stock, shares outstanding (in shares)	2,000					2,000
Preferred Stock, Including Additional Paid in Capital						$ 47,696
Common Stock, Shares, Issued	46,211,430