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Leases - Schedule of leases assets and liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Assets:    
Operating lease right-of-use assets $ 40,449 $ 18,734
Liabilities:    
Operating leases, short-term 10,125 5,904
Operating leases, long-term 37,348 16,279
Total lease liabilities $ 47,473 $ 22,183