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Property and Equipment Property and Equipment [Textual] (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Property, Plant and Equipment [Line Items]          
Depreciation $ 1,614 $ 1,815 $ 3,307 $ 3,722  
Property, Plant and Equipment, Net 41,754   41,754   $ 36,586
Hardware Revenue Generating Asset [Member]          
Property, Plant and Equipment [Line Items]          
Property, Plant and Equipment, Net $ 8,080   $ 8,080   $ 7,734