Net Income Attributable to Green Brick Partners, Inc. Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income attributable to Green Brick Partners, Inc.	$ 72,156	$ 73,520	$ 211,606	$ 236,353
Preferred Stock Dividends, Income Statement Impact	719	719	2,156	2,156
Net Income (Loss) Available to Common Stockholders, Basic	$ 71,437	$ 72,801	$ 209,450	$ 234,197
Weighted-average number of shares outstanding —basic (in shares)	45,320	46,032	45,543	48,205
Basic net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 1.58	$ 1.58	$ 4.60	$ 4.86
Dilutive effect of stock options and restricted stock awards (in shares)	472	358	445	339
Weighted-average number of shares outstanding —diluted (in shares)	45,792	46,390	45,988	48,544
Diluted net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 1.56	$ 1.57	$ 4.55	$ 4.82