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Goodwill and Intangible Assets, net - Schedule of Intangible Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life (Years) 12 years 3 months  
Accumulated Amortization $ 1,002  
Net Book Value at December 31, 2018 18,068  
Impairment Charge 900  
Gross Carrying Amount at December 31, 2017   $ 0
Assets Acquired Pursuant to Business Combination 19,970  
Net Book Value at December 31, 2018 18,068 0
Trade name    
Finite-Lived Intangible Assets [Line Items]    
Assets Acquired Pursuant to Business Combination 900  
Impairment Charge 900  
Net Book Value at December 31, 2018 $ 0  
Developed technology    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life (Years) 13 years  
December 31, 2017   0
Assets Acquired Pursuant to Business Combination $ 18,800  
Accumulated Amortization 844  
Net Book Value at December 31, 2018 $ 17,956  
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Estimated Useful Life (Years) 1 year  
December 31, 2017   $ 0
Assets Acquired Pursuant to Business Combination $ 270  
Accumulated Amortization 158  
Net Book Value at December 31, 2018 $ 112