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Concentration of Credit Risk (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Operations |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 194,164 | $ 158,633 | $ 146,972 | $ 145,073 | $ 136,603 | $ 113,700 | $ 101,162 | $ 98,552 | $ 644,842 | $ 450,017 | $ 340,113
Operating income |  |  |  |  |  |  |  |  | 258,141 | 227,515 | 198,283
Net income | 44,636 | 25,646 | 33,251 | 32,352 | 38,599 | 29,996 | 51,048 | 31,776 | 135,884 | 151,419 | 116,485
Cash Flows |  |  |  |  |  |  |  |  |  |  |
Cash provided by operating activities |  |  |  |  |  |  |  |  | 283,302 | 254,236 | 213,799
Change in cash and cash equivalents |  |  |  |  |  |  |  |  | 18,822 | 12,694 | 372
Cash and cash equivalents at beginning of period |  |  |  | 23,560 |  |  |  | 10,866 | 23,560 | 10,866 | 10,494
Cash and cash equivalents at end of period | 42,382 |  |  |  | 23,560 |  |  |  | 42,382 | 23,560 | 10,866
Investment | Rents from significant lessee | Five Star |  |  |  |  |  |  |  |  |  |  |
Operations |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 1,350,878 | 1,205,150 | 1,133,976
Operating income |  |  |  |  |  |  |  |  | 20,858 | 17,111 | 25,975
Income from continuing operations |  |  |  |  |  |  |  |  | 13,428 | 67,485 | 25,354
Net income |  |  |  |  |  |  |  |  | 24,945 | 64,201 | 23,492
Cash Flows |  |  |  |  |  |  |  |  |  |  |
Cash provided by operating activities |  |  |  |  |  |  |  |  | 56,755 | 40,295 | 106,906
Net cash (used in) provided by discontinued operations |  |  |  |  |  |  |  |  | (6,018) | 3,417 | 662
Cash used in investing activities |  |  |  |  |  |  |  |  | (3,265) | (126,756) | (37,277)
Cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (51,208) | 90,648 | (54,538)
Change in cash and cash equivalents |  |  |  |  |  |  |  |  | (3,736) | 7,604 | 15,753
Cash and cash equivalents at beginning of period |  |  |  | 28,374 |  |  |  | 20,770 | 28,374 | 20,770 | 5,017
Cash and cash equivalents at end of period | 24,638 |  |  |  | 28,374 |  |  |  | 24,638 | 28,374 | 20,770
Financial Position |  |  |  |  |  |  |  |  |  |  |
Current assets | 137,314 |  |  |  | 148,252 |  |  |  | 137,314 | 148,252 |
Non-current assets | 434,042 |  |  |  | 435,225 |  |  |  | 434,042 | 435,225 |
Total indebtedness | 71,132 |  |  |  | 122,713 |  |  |  | 71,132 | 122,713 |
Current liabilities | 183,960 |  |  |  | 189,331 |  |  |  | 183,960 | 189,331 |
Non-current liabilities | 80,591 |  |  |  | 113,952 |  |  |  | 80,591 | 113,952 |
Total shareholders' equity | $ 306,805 |  |  |  | $ 280,194 |  |  |  | $ 306,805 | $ 280,194 |

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