Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
12 Months Ended
Dec. 31, 2019
Mar. 29, 2020
Document and Entity Information    
Entity Central Index Key 0001637736  
Trading Symbol solo  
Amendment Flag false  
Document Fiscal Period Focus FY  
Current Fiscal Year End Date --12-31  
Document Type 20-F  
Document Registration Statement false  
Document Annual Report true  
Document Transition Report false  
Document Shell Company Report false  
Document Period End Date Dec. 31, 2019  
Document Fiscal Year Focus 2019  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   37,049,374
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Interactive Data Current Yes