Consolidated Statements of Income - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Total revenues	$ 623,647,000	$ 458,250,000	$ 390,985,000
Total cost of revenues	493,317,000	359,216,000	303,223,000
Total gross profit	130,330,000	99,034,000	87,762,000
Selling, general and administrative expense	56,830,000	39,016,000	38,629,000
Fair Value, Liabilities Measured on Recurring Basis, Change in Unrealized Gain (Loss)	1,693,000	0	0
Operating profit	71,807,000	60,018,000	49,133,000
Income (Loss) from Equity Method Investments	7,259,000	2,746,000	0
Other income, net	2,605,000	1,473,000	1,421,000
Income before income taxes	81,671,000	64,237,000	50,554,000
Income tax expense	17,136,000	39,031,000	15,381,000
Net income	64,535,000	25,206,000	35,173,000
Less: Net income attributable to noncontrolling interests	12,912,000	10,236,000	11,417,000
Net income attributable to Green Brick Partners, Inc.	$ 51,623,000	$ 14,970,000	$ 23,756,000
Net income attributable to Green Brick Partners, Inc. per common share:
Earnings Per Share, Basic	$ 1.02	$ 0.30	$ 0.49
Earnings Per Share, Diluted	$ 1.02	$ 0.30	$ 0.49
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	50,652	49,597	48,879
Weighted Average Number of Shares Outstanding, Diluted	50,751	49,683	48,886
Residential Real Estate [Member]
Total revenues	$ 578,893,000	$ 439,520,000	$ 375,821,000
Total cost of revenues	457,151,000	345,360,000	292,724,000
Real Estate, Other [Member]
Total revenues	44,754,000	18,730,000	15,164,000
Total cost of revenues	$ 36,166,000	$ 13,856,000	$ 10,499,000