Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Details Textual)

v2.4.1.9
Intangible Assets (Details Textual) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Finite and Indefinite-lived Intangible Assets by Major Class [Line Items]      
Impairment of intangible assets, indefinite-lived (excluding goodwill) $ 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill $ 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill $ 0us-gaap_ImpairmentOfIntangibleAssetsIndefinitelivedExcludingGoodwill
Intangible assets (Additional Textual) [Abstract]      
Amortization of intangible assets 55,016,000us-gaap_AmortizationOfIntangibleAssets 50,011,000us-gaap_AmortizationOfIntangibleAssets 53,620,000us-gaap_AmortizationOfIntangibleAssets
Impairment of definite-lived intangible assets $ 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived $ 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived $ 0us-gaap_ImpairmentOfIntangibleAssetsFinitelived
Subscriber relationships [Member]      
Intangible assets (Additional Textual) [Abstract]      
Weighted average useful lives (in years) 9 years    
Licensing agreements [Member]      
Intangible assets (Additional Textual) [Abstract]      
Weighted average useful lives (in years) 9 years 1 month 6 days    
Original equipment manufacturer relationships (OEM) [Member] | Agero, Inc. [Member]      
Intangible assets (Additional Textual) [Abstract]      
Weighted average useful lives (in years) 15 years    
Proprietary software [Member] | Agero, Inc. [Member]      
Intangible assets (Additional Textual) [Abstract]      
Weighted average useful lives (in years) 10 years