Annual report pursuant to Section 13 and 15(d)

Goodwill And Intangible Assets (Schedule Of Intangible Assets) (Details)

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Goodwill And Intangible Assets (Schedule Of Intangible Assets) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]      
Amortization expenses $ 6,489 $ 4,822 $ 5,561
Intangible assets 79,616 44,616  
Weighted Average Life in Years 11 years 1 month 6 days 9 years 1 month 6 days  
Total accumulated amortization (30,836) (24,348)  
Intangible Assets, Net, Total 48,780 20,268  
Purchased Contract Rights [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets 21,988 21,988  
Weighted Average Life in Years 7 years 6 months 7 years 6 months  
Total accumulated amortization (13,459) (11,010)  
Provider Contracts [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets 35,537 2,737  
Weighted Average Life in Years 13 years 2 months 18 days 9 years 9 months 18 days  
Total accumulated amortization (3,767) (1,241)  
Customer Relationships [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets 13,396 13,396  
Weighted Average Life in Years 8 years 8 years  
Total accumulated amortization (11,425) (10,214)  
Trade Names [Member]
      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets 8,695 6,495  
Weighted Average Life in Years 18 years 10 months 18 days 16 years 3 months 18 days  
Total accumulated amortization $ (2,185) $ (1,883)