Pro Forma Net (Loss) Income and (Loss) Earnings per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Earnings per Share, Pro Forma [Line Items]
(Loss) income before taxes	$ 414,908	$ (1,686,469)	$ 7,845,319	$ (1,527,778)
(Provision) benefit for taxes	(140,433)	607,129	(3,025,602)	2,019,149
Net income (loss)	274,475	(1,079,340)	4,819,717	491,371
Net loss attributable to noncontrolling interests	174,875	33,985	198,279	34,485
Net income (Loss) attributable to The New Home Company Inc	$ 449,350	$ (1,045,355)	$ 5,017,996	525,856
Pro forma basic (loss) earnings per share attributable to The New Home Company Inc. (in dollars per share)		$ (0.06)
Pro forma diluted (loss) earnings per share attributable to The New Home Company Inc. (in dollars per share)		$ (0.06)
Pro Forma
Earnings per Share, Pro Forma [Line Items]
(Provision) benefit for taxes		$ 607,129		550,000
Net income (loss)		(1,079,340)		(977,778)
Net income (Loss) attributable to The New Home Company Inc		$ (1,045,355)		$ (943,293)
Pro forma basic (loss) earnings per share attributable to The New Home Company Inc. (in dollars per share)				$ (0.06)
Pro forma diluted (loss) earnings per share attributable to The New Home Company Inc. (in dollars per share)				$ (0.06)