CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets
Cash and cash equivalents	$ 28,242	$ 69,240
Cash and escrow deposits - restricted	42,666	43,096
Accounts receivable, net	109,178	100,401
Deferred tax asset	13,377	13,377
Prepaid expenses and other current assets, net	89,899	82,924
Total current assets	283,362	309,038
Property, plant and equipment and leasehold intangibles, net	3,853,423	3,879,977
Cash and escrow deposits - restricted	62,370	62,767
Investment in unconsolidated ventures	36,287	31,386
Goodwill	109,553	109,553
Other intangible assets, net	158,804	159,942
Other assets, net	117,109	113,315
Total assets	4,620,908	4,665,978
Current liabilities
Current portion of long-term debt	307,845	509,543
Trade accounts payable	45,920	43,184
Accrued expenses	187,466	200,895
Refundable entrance fees and deferred revenue	364,148	370,755
Tenant security deposits	5,966	6,521
Total current liabilities	911,345	1,130,898
Long-term debt, less current portion	2,286,085	2,089,826
Line of credit	45,000	80,000
Deferred entrance fee revenue	81,098	79,010
Deferred liabilities	150,444	150,788
Deferred tax liability	96,187	96,187
Other liabilities	42,880	42,283
Total liabilities	3,613,039	3,668,992
Stockholders' Equity
Preferred stock, $0.01 par value, 50,000,000 shares authorized at March 31, 2013 and December 31, 2012; no shares issued and outstanding	0	0
Common stock, $0.01 par value, 200,000,000 shares authorized at March 31, 2013 and December 31, 2012; 130,097,962 and 129,117,946 shares issued and 127,669,561 and 126,689,545 shares outstanding (including 4,629,150 and 3,951,950 unvested restricted shares), respectively	1,277	1,267
Additional paid-in-capital	2,005,261	1,997,946
Treasury stock, at cost; 2,428,401 shares at March 31, 2013 and December 31, 2012	(46,800)	(46,800)
Accumulated deficit	(951,869)	(955,427)
Total stockholders' equity	1,007,869	996,986
Total liabilities and stockholders' equity	$ 4,620,908	$ 4,665,978