Variable Interest Entities - Total Risk of Loss Related to Contract Land Deposits (Detail) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Variable Interest Entity Reporting Entity Involvement Maximum Loss Exposure [Abstract]
Contract land deposits		$ 385,534	$ 350,750
Loss reserve on contract land deposits		(42,239)	(56,074)
Contract land deposits, net		343,295	294,676
Contingent obligations in the form of letters of credit		3,302	4,674
Contingent specific performance obligations	[1]	1,505	1,505
Total risk of loss		$ 348,102	$ 300,855

[1] As of both December 31, 2015 and 2014, the Company was committed to purchase 10 finished lots under specific performance obligations.