Land Under Development - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Lot Parcel	Feb. 29, 2016 USD ($)	Dec. 31, 2015 USD ($) Lot Parcel
Real Estate [Abstract]
Number of raw parcels of land owned | Parcel	4		4
Carrying value of raw parcels of land	$ 46,999		$ 60,611
Number of finished lots for use in homebuilding operations | Lot	600		980
Aggregate additional funding commitments related to raw land property under joint development	$ 12,000
Expected development credits that will offset the aggregate additional funding commitments related to raw land property development	$ 7,100
Acquisition costs of land under development and finished lots		$ 150,000
Lots sold to unrelated party | Lot	56
Amount of lots sold to unrelated parties under contract	$ 16,800