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Goodwill and Intagible Assets Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Finite-Lived Intangible Assets [Line Items]        
Finite-lived Intangible Assets Acquired     $ 105  
Amortization of Intangible Assets $ 1,096 $ 1,145 3,266 $ 3,678
General and administrative        
Finite-Lived Intangible Assets [Line Items]        
Amortization of Intangible Assets 721 770 2,169 2,434
Cost of service sales        
Finite-Lived Intangible Assets [Line Items]        
Amortization of Intangible Assets $ 375 $ 375 1,097 $ 1,244
Customer Relationships [Member]        
Finite-Lived Intangible Assets [Line Items]        
Finite-lived Intangible Assets Acquired     $ 100