Net Income Attributable to Green Brick Partners, Inc. Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Earnings Per Share [Abstract]
Net income attributable to Green Brick Partners, Inc.	$ 64,180	$ 61,577
Weighted-average number of shares outstanding —basic (in shares)	45,945	50,586
Basic net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 1.38	$ 1.20
Dilutive effect of stock options and restricted stock awards (in shares)	406	338
Weighted-average number of shares outstanding —diluted (in shares)	46,351	50,924
Diluted net income attributable to Green Brick Partners, Inc. per share (in dollars per share)	$ 1.37	$ 1.20