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Leases - Cash flow (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Leases    
Operating cash flows from operating leases $ 3,406 $ 1,971
Financing cash flows from finance lease 2,224  
Operating cash flows from finance leases 776  
Right-of-use assets obtained in exchange for operating lease obligations $ 13 $ 22,642