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Goodwill and Intagible Assets Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Finite-Lived Intangible Assets [Line Items]        
Finite-lived Intangible Assets Acquired     $ 100  
Amortization of Intangible Assets $ 1,102 $ 1,250 2,170 $ 2,533
General and administrative        
Finite-Lived Intangible Assets [Line Items]        
Amortization of Intangible Assets 735 833 1,448 1,664
Cost of service sales        
Finite-Lived Intangible Assets [Line Items]        
Amortization of Intangible Assets $ 367 $ 417 $ 722 $ 869