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Summary of Significant Accounting Policies (Details Textual) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2011 Regions Unit Country Y | Dec. 31, 2010 Unit | Dec. 31, 2009 Unit
Summary of Significant Accounting Policies (Textual) [Abstract] |  |  |
Majority-owned subsidiaries that the Company controls | Between 20% and 50% |  |
Subsidiaries that the Company accounts for under the cost method | Less than 20% |  |
Remaining maturity period for highly liquid investments | Three months or less |  |
Approximate available remaining lease period for fee owned properties | 20 |  |
Multiplication Value to Cash flows for the determination of fair value of Reporting units | 7.5 | 6.5 | 6.5
Number of reporting units in U.S. | 16 |  |
Number of international reporting units | 8 |  |
Amortization period of deferred charges and other assets, minimum | 1 |  |
Amortization period of deferred charges and other assets, maximum | 10 |  |
General liability claim per occurrence | $ 250 |  |
Annual cap per policy year | 2,650 |  |
Medical claim per occurrence | 125 |  |
Insurance Reserves | 7,600 | 7,447 |
Unredeemed gift cards and other advances | 7,846 | 7,073 | 7,162
Advertising cost | $ 18,052 | $ 16,147 | $ 15,104
Minimum Percentage for Tax position measure as largest amount of benefit | 50.00% |  |

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- Definition Amortization period of deferred charges and other assets minimum. + References No definition available. + Details
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- Definition General liability claim per occurrence. + References No definition available. + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-7 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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