CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 24,574	$ 46,612
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation	44,443	41,457
Net amortization of debt discounts, premiums and deferred financing fees	746	2,032
Straight line rental income	(8,092)	(7,381)
Amortization of acquired real estate leases	14,411	9,573
Other amortization	4,793	4,230
Loss on early extinguishment of debt	67
Equity in earnings of investees	(2,958)	(2,712)
Distributions of earnings from investees	2,913	2,675
Net gain on sale of properties		(34,572)
Change in assets and liabilities:
Increase in restricted cash	(782)	(448)
Increase in rents receivable and other assets	(23,170)	(28,627)
Decrease in accounts payable and accrued expenses	(20,630)	(10,615)
(Decrease) increase in rent collected in advance	(3,781)	229
Increase in security deposits	245	219
Increase in due to related persons	2,372	2,493
Cash provided by operating activities	35,151	25,165
CASH FLOWS FROM INVESTING ACTIVITIES:
Real estate acquisitions	(91,535)	(295,919)
Real estate improvements	(26,430)	(14,503)
Investment in direct financing lease, net		(38,635)
Principal payments received from direct financing lease	1,632	476
Principal payments received from real estate mortgage receivable		70
Proceeds from sale of properties, net		97,362
Distributions in excess of earnings from investees	1,266	1,405
Increase in restricted cash	(8,544)
Cash used in investing activities	(123,611)	(249,744)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common shares, net	180,954
Proceeds from borrowings	338,500	295,000
Payments on borrowings	(369,082)	(194,318)
Deferred financing fees	(5,767)
Distributions to common shareholders	(41,861)	(36,070)
Distributions to preferred shareholders	(13,643)	(8,839)
Cash provided by financing activities	89,101	55,773
Effect of exchange rate changes on cash	183	155
Increase (decrease) in cash and cash equivalents	824	(168,651)
Cash and cash equivalents at beginning of period	192,763	194,040
Cash and cash equivalents at end of period	193,587	25,389
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	66,971	58,306
Taxes paid	34	160
NON-CASH INVESTING ACTIVITIES:
Real estate acquisitions	(147,872)	(4,059)
NON-CASH FINANCING ACTIVITIES:
Assumption of mortgage note payable	147,872
Assumption of note payable		$ 4,059