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Concentration of Credit Risk (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Operations |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 136,603 | $ 113,277 | $ 100,748 | $ 98,077 | $ 97,295 | $ 81,164 | $ 81,008 | $ 80,704 | $ 450,017 | $ 340,113 | $ 297,399
Operating income |  |  |  |  |  |  |  |  | 227,515 | 198,283 | 165,233
Net income | 38,599 | 29,996 | 51,048 | 31,776 | 33,864 | 28,078 | 24,559 | 29,984 | 151,419 | 116,485 | 109,715
Cash Flows |  |  |  |  |  |  |  |  |  |  |
Cash provided by operating activities |  |  |  |  |  |  |  |  | 255,559 | 215,305 | 209,392
Change in cash and cash equivalents |  |  |  |  |  |  |  |  | 12,694 | 372 | 4,504
Cash and cash equivalents at beginning of year |  |  |  | 10,866 |  |  |  | 10,494 | 10,866 | 10,494 | 5,990
Cash and cash equivalents at end of year | 23,560 |  |  |  | 10,866 |  |  |  | 23,560 | 10,866 | 10,494
Investment | Rents from significant lessee | Five Star |  |  |  |  |  |  |  |  |  |  |
Operations |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 1,281,764 | 1,213,261 | 1,142,740
Operating income |  |  |  |  |  |  |  |  | 21,348 | 26,124 | 10,532
Income from continuing operations |  |  |  |  |  |  |  |  | 68,277 | 25,562 | 40,420
Net income |  |  |  |  |  |  |  |  | 64,201 | 23,492 | 38,330
Cash Flows |  |  |  |  |  |  |  |  |  |  |
Cash provided by operating activities |  |  |  |  |  |  |  |  | 44,414 | 109,779 | 28,836
Net cash used in discontinued operations |  |  |  |  |  |  |  |  | (156) | (1,823) | (1,393)
Cash used in investing activities |  |  |  |  |  |  |  |  | (127,302) | (37,665) | (24,709)
Cash provided by (used in) financing activities |  |  |  |  |  |  |  |  | 90,648 | (54,538) | (13,855)
Change in cash and cash equivalents |  |  |  |  |  |  |  |  | 7,604 | 15,753 | (11,121)
Cash and cash equivalents at beginning of year |  |  |  | 20,770 |  |  |  | 5,017 | 20,770 | 5,017 | 16,138
Cash and cash equivalents at end of year | 28,374 |  |  |  | 20,770 |  |  |  | 28,374 | 20,770 | 5,017
Financial Position |  |  |  |  |  |  |  |  |  |  |
Current assets | 141,516 |  |  |  | 135,965 |  |  |  | 141,516 | 135,965 |
Non-current assets | 444,961 |  |  |  | 243,829 |  |  |  | 444,961 | 243,829 |
Total indebtedness | 122,713 |  |  |  | 45,729 |  |  |  | 122,713 | 45,729 |
Current liabilities | 189,331 |  |  |  | 137,911 |  |  |  | 189,331 | 137,911 |
Non-current liabilities | 113,952 |  |  |  | 77,116 |  |  |  | 113,952 | 77,116 |
Total shareholders' equity | $ 280,194 |  |  |  | $ 164,767 |  |  |  | $ 280,194 | $ 164,767 |

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