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, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Share [Abstract]
Net income attributable to Green Brick Partners, Inc.	$ 89,111	$ 72,156	$ 277,770	$ 211,606
Preferred Stock Dividends, Income Statement Impact	719	719	2,156	2,156
Net Income (Loss) Available to Common Stockholders, Basic	$ 88,392	$ 71,437	$ 275,614	$ 209,450
Weighted-average number of shares outstanding —basic (in shares)	44,457	45,320	44,614	45,543
Basic net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 1.99	$ 1.58	$ 6.18	$ 4.60
Dilutive effect of stock options and restricted stock awards (in shares)	73	472	405	445
Weighted-average number of shares outstanding —diluted (in shares)	44,530	45,792	45,019	45,988
Diluted net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 1.98	$ 1.56	$ 6.12	$ 4.55