Related Party Transactions - Additional Information (Detail) - Elm Street [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) Lot	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Related Party Transaction [Line Items]
Related party forward lot purchase agreement purchase price	$ 68,000
Number of related parties for forward lot purchase agreement | Lot	1
Market price of developed lots	$ 41,200	$ 50,100	$ 38,400
Expected number of lots from joint venture with Elm Street | Lot	2,400
Development costs to manage property under related party transactions	$ 143	$ 143	$ 143