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Revenues and Cost of Services - Breakdown of Revenue From Contracts With Customers Per Type of Service (Parenthetical) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Disclosure of Disaggregation of Revenue from Contracts with Customers [Line Items]    
Non-cash reduction from revenue related to warrants issued   $ 4,333
Prepaid Assets    
Disclosure of Disaggregation of Revenue from Contracts with Customers [Line Items]    
Amortization charge related to prepaid assets $ 67