Business Acquisition - Narrative (Details)			3 Months Ended		9 Months Ended
	Jul. 01, 2015 USD ($) lot	Mar. 13, 2014 USD ($) lot	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)
Business Acquisition [Line Items]
Revenues			$ 153,827,000	$ 86,641,000	$ 292,046,000	$ 181,953,000
Net Income			5,520,000	678,000	(3,954,000)	(3,537,000)
Goodwill expected tax deductible amount			4,000,000		4,000,000
Bonterra Builders, LLC [Member]
Business Acquisition [Line Items]
Cash payments to acquire businesses	$ 101,500,000
Potential earn-out	6,000,000
Estimate of total payment for the earn-out	6,000,000.0
Consideration held as security	$ 800,000.0
Number of primary residential lots | lot	1,700
Revenues			41,200,000
Net Income			3,800,000
Trade name	$ 2,000,000
Amortization of Intangible Assets			100,000
Transaction and integration costs			700,000
Bonterra Builders, LLC [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Trade name	$ 1,400,000
Amortization period	3 years
Bonterra Builders, LLC [Member] | Noncompete Agreements [Member]
Business Acquisition [Line Items]
Trade name	$ 600,000
Amortization period	5 years
Royal Oak LLC and Affiliate [Member]
Business Acquisition [Line Items]
Cash payments to acquire businesses		$ 65,000,000
Potential earn-out		3,000,000
Estimate of total payment for the earn-out			2,100,000
Contingent consideration (earn-out)			1,200,000
Target earn-out					3,000,000
Trade name		$ 614,000
Amortization of Intangible Assets			100,000		200,000
Transaction and integration costs				$ 0	900,000	$ 1,100,000
Goodwill expected tax deductible amount			$ 8,600,000		$ 8,600,000
Royal Oak LLC and Affiliate [Member] | Minimum [Member]
Business Acquisition [Line Items]
Performance target to receive earn-out		50.00%
Royal Oak LLC and Affiliate [Member] | Trade Names [Member]
Business Acquisition [Line Items]
Trade name		$ 600,000
Royal Oak LLC and Affiliate [Member] | Lots Owned Or Controlled [Member]
Business Acquisition [Line Items]
Number of primary residential lots | lot		2,500