Annual report pursuant to Section 13 and 15(d)

Summary Of Significant Accounting Policies (Schedule Of Amortization Period For Intangible Assets) (Details)

v2.4.0.6
Summary Of Significant Accounting Policies (Schedule Of Amortization Period For Intangible Assets) (Details)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 9 years 1 month 6 days 9 years
Purchased Contract Rights [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 7 years 6 months 7 years 6 months
Provider Contracts [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 9 years 9 months 18 days 9 years 9 months 18 days
Customer Relationships [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 8 years 7 years 10 months 24 days
Trade Names [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 16 years 3 months 18 days 16 years 3 months 18 days
Minimum [Member] | Purchased Contract Rights [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 5 years  
Minimum [Member] | Provider Contracts [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 7 years  
Minimum [Member] | Customer Relationships [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 5 years  
Minimum [Member] | Trade Names [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 7 years  
Maximum [Member] | Purchased Contract Rights [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 15 years  
Maximum [Member] | Provider Contracts [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 10 years  
Maximum [Member] | Customer Relationships [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 15 years  
Maximum [Member] | Trade Names [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Intangible Assets, Amortization Period 20 years