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Other liabilities (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Other current liabilities    
Lease liability $ 5,748 $ 5,571
Total other current liabilities 5,748 5,571
Other non-current liabilities    
Lease liability 37,124 38,608
Other 1,001 1,001
Total other non-current liabilities 38,125 39,609
Restructuring costs   $ 2,600
Restructuring costs paid $ 2,000