Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Accounting Policies [Abstract]

Schedule of Real Estate Inventory

	As of December 31,
	2017		2016
Completed home inventory and residential lots held for sale	$	106,043	$	127,679
Work in process and land under development	389,612		269,255
Undeveloped land	—		4,070
Land not owned under option contracts	—		9,293
Total inventory	$	495,655	$	410,297

Schedule of Real Estate Inventory Capitalized Interest Costs

Interest costs incurred, capitalized and expensed were as follows (in thousands):

	2017			2016			2015
Interest capitalized at beginning of year	$	9,417		$	9,085		$	3,713
Interest incurred	4,456			3,218			9,625
Interest charged to cost of sales	(3,399		)	(2,886		)	(3,972		)
Interest charged to interest expense	—			—			(281		)
Interest capitalized at end of year	$	10,474		$	9,417		$	9,085

Schedule of Basic and Diluted Net Income

The computation of basic and diluted net income attributable to Green Brick Partners, Inc. per share using the treasury stock method is as follows (in thousands, except per share amounts):

	Years End December 31,
	2017		2016		2015
Net income attributable to Green Brick Partners, Inc. per share
Net income attributable to Green Brick Partners, Inc.	$	14,970	$	23,756	$	15,325
Weighted average number of shares outstanding —basic	49,597		48,879		40,068
Basic net income attributable to Green Brick Partners, Inc. per share	$	0.30	$	0.49	$	0.38
Weighted average number of shares outstanding —basic	49,597		48,879		40,068
Dilutive effect of stock options and restricted stock awards	86		7		30
Weighted average number of shares outstanding —diluted	49,683		48,886		40,099
Diluted net income attributable to Green Brick Partners, Inc. per share	$	0.30	$	0.49	$	0.38

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following securities that could potentially dilute earnings per share in the future are not included in the determination of diluted net income attributable to Green Brick Partners, Inc. per common share (in thousands):

	Years End December 31,
	2017	2016	2015
Antidilutive options to purchase common stock	—	144	62