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Summary of Significant Accounting Policies - Schedule of components of identifiable Intangible Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 19,860 $ 16,074
Less accumulated amortization (8,190) (5,508)
Total 11,670 10,566
Trademarks, trade names (non-amortizable) 400 400
Intangible assets - net 12,070 10,966
Software and Software Development Costs    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 19,670 15,884
Software and Software Development Costs | Minimum    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life 3 years  
Software and Software Development Costs | Maximum    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life 7 years  
Customer Relationships    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 160 160
Estimated Useful Life 7 years  
Non-compete Agreement    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 30 $ 30
Estimated Useful Life 1 year