Supplemental Disclosures to Consolidated Statements of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Supplemental disclosure of cash flow information
Income taxes (refunded) paid	$ (2,391)	$ 34
Interest paid, net of amounts capitalized	11,853	7,403
Supplemental disclosure of non-cash activities
Unrealized gain on available-for-sale investments, net	802	1,951
Reclassification of Deficit Distributions (from) to unconsolidated joint ventures (to) from other liabilities	(82)	140
Purchase of land in exchange for note payable	1,097	803
Elimination of joint venture inventory, receivables from related parties and other assets	(41,600)	0
Elimination of joint venture note payable and other liabilities	(1,949)	0
Redemption of Company's interest in consolidated joint venture and elimination of non-controlling interest, less cash retained by non-controlling interest	(39,651)	0
Contribution of net assets for payment on notes receivable from related parties	0	41,524
Distribution of land from unconsolidated joint ventures	0	15,422
Distribution of note payable from unconsolidated joint ventures	$ 0	$ 599