CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Real estate properties:
Land	$ 482,065	$ 446,622
Buildings and improvements	3,594,332	3,315,090
Total real estate properties, at cost, gross	4,076,397	3,761,712
Less accumulated depreciation	577,277	538,872
Total real estate properties, at cost, net	3,499,120	3,222,840
Cash and cash equivalents	28,082	10,866
Restricted cash	5,712	4,994
Deferred financing fees, net	23,718	16,262
Acquired real estate leases, net	70,843	63,593
Loan receivable	9,000
Other assets	96,943	74,101
Total assets	3,733,418	3,392,656
LIABILITIES AND SHAREHOLDERS' EQUITY
Unsecured revolving credit facility	184,000	128,000
Senior unsecured notes due 2012, 2016 and 2020, net of discount	670,630	422,880
Secured debt and capital leases	697,531	654,010
Accrued interest	20,093	14,993
Assumed real estate lease obligations, net	18,034	18,239
Other liabilities	40,108	26,557
Total liabilities	1,630,396	1,264,679
Commitments and contingencies
Shareholders' equity:
Common shares of beneficial interest, $0.01 par value: 149,700,000 shares authorized, 141,873,596 and 141,854,657 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively	1,419	1,418
Additional paid in capital	2,510,710	2,510,373
Cumulative net income	839,341	756,518
Cumulative distributions	(1,258,844)	(1,153,868)
Cumulative other comprehensive income	10,396	13,536
Total shareholders' equity	2,103,022	2,127,977
Total liabilities and shareholders' equity	$ 3,733,418	$ 3,392,656