Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Intangible Assets Intangible Assets (Details)

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Goodwill and Intangible Assets Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Acquired Finite-Lived Intangible Assets [Line Items]        
Amortization of Intangible Assets $ 1,200 $ 600 $ 1,800 $ 1,300
Intangible Assets, Gross (Excluding Goodwill) 21,970   21,970  
Finite-Lived Intangible Assets, Accumulated Amortization (6,025)   (6,025)  
Finite-Lived Intangible Assets, Net 15,945   $ 15,945  
Developed Technology Rights [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Asset, Useful Life     6 years  
Intangible Assets, Gross (Excluding Goodwill) 11,630   $ 11,630  
Finite-Lived Intangible Assets, Accumulated Amortization (485)   (485)  
Finite-Lived Intangible Assets, Net 11,145   $ 11,145  
Customer Relationships [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Asset, Useful Life     3 years  
Intangible Assets, Gross (Excluding Goodwill) 5,400   $ 5,400  
Finite-Lived Intangible Assets, Accumulated Amortization (3,940)   (3,940)  
Finite-Lived Intangible Assets, Net 1,460   $ 1,460  
Trademarks and Trade Names [Member]        
Acquired Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Asset, Useful Life     5 years  
Intangible Assets, Gross (Excluding Goodwill) 4,940   $ 4,940  
Finite-Lived Intangible Assets, Accumulated Amortization (1,600)   (1,600)  
Finite-Lived Intangible Assets, Net $ 3,340   $ 3,340