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Capitalized Software Costs - Future Amortization (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Capitalized software costs, net $ 6,011 $ 6,716
Capitalized software    
Finite-Lived Intangible Assets [Line Items]    
Remainder of 2017 3,436  
2018 2,221  
2019 347  
2020 7  
Capitalized software costs, net $ 6,011