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Capitalized Software Development Costs - Schedule of Expected Amortization of Capitalized Software Development Costs (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Capitalized Computer Software Net [Abstract]    
2018 (for the remaining nine months) $ 4,121  
2019 4,124  
2020 2,127  
2021 383  
Net carrying amount $ 10,755 $ 10,005