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Business Combinations (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Aug. 21, 2015
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Business Acquisition [Line Items]          
Pro forma revenue, percent increase (less than)   0.10% 0.10% 0.10% 0.10%
BitYota, Inc.          
Business Acquisition [Line Items]          
Purchase price $ 12.8        
Technology and Developement and General and Administrative | BitYota, Inc.          
Business Acquisition [Line Items]          
Acquisition related costs       $ 3.1