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Goodwill and Intagible Assets Finite-Lived Intangible Assets (Details) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross $ 15,983 $ 2,372
Intangible assets, accumulated amortization 1,181 688
Finite-lived intangible assets, net 14,802 1,684
Subscriber relationships
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible asset, useful life 10 years  
Finite-lived intangible assets, gross 8,106  
Intangible assets, accumulated amortization 113  
Finite-lived intangible assets, net 7,993  
Distribution rights
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible asset, useful life 15 years  
Finite-lived intangible assets, gross 4,791  
Intangible assets, accumulated amortization 45  
Finite-lived intangible assets, net 4,746  
Internally developed software
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible asset, useful life 3 years  
Finite-lived intangible assets, gross 532  
Intangible assets, accumulated amortization 25  
Finite-lived intangible assets, net 507  
Proprietary content
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible asset, useful life 2 years  
Finite-lived intangible assets, gross 182  
Intangible assets, accumulated amortization 13  
Finite-lived intangible assets, net 169  
Intellectual property
    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible asset, useful life 7 years 7 years
Finite-lived intangible assets, gross 2,372 2,372
Intangible assets, accumulated amortization 985 688
Finite-lived intangible assets, net $ 1,387 $ 1,684