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Impairment of Long-Lived Assets (Details Textual) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Jun. 30, 2012 | Jun. 30, 2011
Impairment of Long-Lived Assets (Textual) [Abstract] |  |
Lease period of fee owned properties | 20 years |
Fair value of long lived assets in the multiples of cash flow | Six and a half times for the evaluations performed | Six and a half times for the evaluations performed
The estimated aggregate fair value of the long-lived assets | $ 0 |

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- Definition Assumed remaining period of fee owned properties. + References No definition available. + Details
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- Definition Estimated aggregate fair value of long lived assets impaired during current period. + References No definition available. + Details
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- Details
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- Definition A description of how an entity determined the fair value of the long-lived asset they are holding and using, for example, whether based on a quoted market price, prices for similar assets, or another valuation technique. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section CC -Subsection 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 26 -Subparagraph c -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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