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Segment information and disaggregated revenue disclosures - Narrative (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2020
USD ($)
segment
Sep. 30, 2019
USD ($)
Disclosure of geographical areas [line items]    
Number of operating segments | segment 1  
Revenue from rendering of information technology services $ 100 $ 669
Transaction price allocated to remaining performance obligations $ 1,784  
International    
Disclosure of geographical areas [line items]    
Percentage of total revenues 99.70%