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Intangible Asset and Goodwill (Details 4) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Estimated future amortization expense of intangible assets    
2014 (remaining 6 months) $ 13,063  
2015 25,098  
2016 24,318  
2017 23,709  
2018 10,827  
Thereafter 5,420  
Net Carrying Amount $ 102,435 $ 117,172