Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Income Statement [Abstract]
Sale of residential units	$ 108,437	$ 87,827	$ 302,179	$ 248,187
Sale of land and lots	5,269	3,843	15,815	12,377
Total revenues	113,706	91,670	317,994	260,564
Cost of residential units	84,752	68,350	237,066	195,001
Cost of land and lots	3,544	2,676	11,306	8,389
Total cost of sales	88,296	71,026	248,372	203,390
Total gross profit	25,410	20,644	69,622	57,174
Salary expense	(5,218)	(5,256)	(15,985)	(15,886)
Selling, general and administrative expense	(4,302)	(4,130)	(12,747)	(12,275)
Operating profit	15,890	11,258	40,890	29,013
Equity in income of unconsolidated entity	968	0	968	0
Other income, net	435	564	1,362	2,400
Income before provision for income taxes	17,293	11,822	43,220	31,413
Income tax provision	5,364	3,657	13,635	9,340
Net income	11,929	8,165	29,585	22,073
Less: net income attributable to noncontrolling interests	2,649	1,922	6,420	5,993
Net income attributable to Green Brick Partners, Inc.	$ 9,280	$ 6,243	$ 23,165	$ 16,080
Net income attributable to Green Brick Partners, Inc. per common share:
Basic (in dollars per share)	$ 0.19	$ 0.13	$ 0.47	$ 0.33
Diluted (in dollars per share)	$ 0.19	$ 0.13	$ 0.47	$ 0.33
Weighted average common shares used in the calculation of net income attributable to Green Brick Partners, Inc. per common share:
Weighted-average number of shares outstanding —basic (shares)	49,808	48,899	49,274	48,868
Weighted-average number of shares outstanding —diluted (shares)	49,892	48,907	49,347	48,871