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Description Of Business And Summary Of Significant Accounting Policies (Estimated Useful Lives Of Leasehold Improvements, Property And Equipment) (Details) | 12 Months Ended
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Dec. 31, 2012
Leasehold Improvements And Buildings [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 20 years
Leasehold Improvements And Buildings [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 3 years
Furniture And Fixtures [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 10 years
Furniture And Fixtures [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 4 years
Equipment [Member] | Maximum [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 7 years
Equipment [Member] | Minimum [Member] |
Property, Plant and Equipment [Line Items] |
Estimated useful lives | 3 years

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration