Basis of Presentation - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Customer deposits	$ 167,486	$ 150,033
Contract liability, revenue recognized	78,000
Cumulative-effect adjustment from adoption of ASU 2014-09, net of tax		2,196
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative-effect adjustment from adoption of ASU 2014-09, net of tax		2,196
Other Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Contract cost	21,100	19,500
Homebuilding [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash and cash equivalents	20,767	19,438
Consolidated Joint Venture [Member] | Homebuilding [Member] | Other Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Restricted cash and cash equivalents	$ 1,148	$ 1,069	$ 1,210	$ 1,214