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Property and Equipment Property and Equipment [Textual] (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Property, Plant and Equipment [Line Items]          
Depreciation $ 1,649 $ 1,690 $ 4,956 $ 5,412  
Property, Plant and Equipment, Net 42,603   42,603   $ 36,586
Hardware Revenue Generating Asset [Member]          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Net $ 8,621   $ 8,621   $ 7,734