Annual report pursuant to Section 13 and 15(d)

Summary Of Significant Accounting Policies (Schedule Of Property, Software And Equipment Depreciation Periods) (Details)

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Summary Of Significant Accounting Policies (Schedule Of Property, Software And Equipment Depreciation Periods) (Details)
12 Months Ended
Dec. 31, 2011
years
Buildings And Land Improvements [Member]
 
Property, Plant and Equipment [Line Items]  
Fixed Asset - Depreciation Period, Minimum, Years 5
Fixed Asset - Depreciation Period, Maximum, Years 40
Computer Hardware And Software [Member]
 
Property, Plant and Equipment [Line Items]  
Fixed Asset - Depreciation Period, Minimum, Years 3
Fixed Asset - Depreciation Period, Maximum, Years 10
Furniture And Equipment [Member]
 
Property, Plant and Equipment [Line Items]  
Fixed Asset - Depreciation Period, Minimum, Years 5
Fixed Asset - Depreciation Period, Maximum, Years 10
Leasehold Improvements [Member]
 
Property, Plant and Equipment [Line Items]  
Fixed Asset - Depreciation Period, Minimum, Years 1
Fixed Asset - Depreciation Period, Maximum, Years 20