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Significant Accounting Policies (Estimated Useful Lives Of Assets) (Details)
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3 Months Ended |
|---|---|
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Mar. 31, 2012
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Buildings And Improvements [Member]
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| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives of assets, minimum (in years) | 5 |
| Estimated useful lives of assets, maximum (in years) | 40 |
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Furniture, Fixtures And Equipment [Member]
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| Property, Plant and Equipment [Line Items] | |
| Estimated useful lives of assets, minimum (in years) | 5 |
| Estimated useful lives of assets, maximum (in years) | 10 |