Land Under Development - Additional Information (Detail) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 29, 2016 USD ($) Lot	Dec. 31, 2015 USD ($) Lot Parcel	Dec. 31, 2014 USD ($) Lot Parcel
Real Estate Properties [Line Items]
Number of raw parcels of land owned | Parcel		4	4
Carrying value of raw parcels of land		$ 60,611	$ 33,689
Number of finished lots for use in homebuilding operations | Lot		980	480
Aggregate additional funding commitments related to raw land property development		$ 19,200
Expected development credit offset amount		9,600
Letters of credit related to land under development		$ 2,200
Subsequent Event [Member]
Real Estate Properties [Line Items]
Acquisition costs of raw parcel of land	$ 150,000
Number of lots expected to produce from raw land acquisition | Lot	1,000
Number of lots under contract with unrelated party | Lot	160