Acquisition of Real Estate - Operating Loss (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Business Acquisition Purchase Price Allocation [Line Items]
Revenue	$ 47,845	$ 44,056	$ 138,892	$ 128,220
Operating Loss	(11,423)	(5,350)	(16,718)	(24,121)
Net Loss	$ (12,060)	$ (4,337)	$ (14,187)	$ (18,738)
Basic and Diluted Loss Per Share	$ (0.05)	$ (0.02)	$ (0.06)	$ (0.10)
Weighted Average Shares Outstanding for Basic and Diluted Loss	249,173,577	199,398,630	247,718,798	183,098,748