Real Estate Activity (Revenues, Costs And Expenses Associated With Consolidated Condominium Activities) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Real Estate Properties [Line Items]
Condominium revenues	$ 23,517	$ 13,678	$ 64,043	$ 46,443
Condominium costs and expenses	(13,256)	(11,097)	(38,960)	(37,686)
Gains on sales of condominiums, before income taxes	10,261	2,581	25,083	8,757
Income tax benefit			612
Net gains on sales of condominiums	$ 10,261	$ 2,581	$ 25,695	$ 8,757