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Summary of significant accounting policies - Reclassifications (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Cost of sales $ 8,300 $ 5,808
General and Administrative Expense 25,428 12,004
Previously Reported [Member]    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Cost of sales 10,035 6,740
General and Administrative Expense 23,693 11,072
Revision of Prior Period, Change in Accounting Principle, Adjustment [Member]    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Cost of sales (1,735) (932)
General and Administrative Expense $ 1,735 $ 932