Annual report pursuant to Section 13 and 15(d)

Leases - Components of lease expense (Details)

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Leases - Components of lease expense (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2019
USD ($)
Components of lease expense:  
Operating lease cost $ 45,209
Short-term lease cost 12,552
Variable lease cost 6,985
Sublease income (574)
Net lease cost $ 64,172