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Leases Leases Cost (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Leases [Abstract]  
Operating lease cost $ 35,335
Amortization of right of use assets 625
Interest on lease liabilities 117
Total finance lease cost 742
Short-term lease cost 6,655
Variable lease cost 6,198
Total lease cost $ 48,930