Annual report pursuant to Section 13 and 15(d)

Operating Leases Lease, Cost (Details)

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Operating Leases Lease, Cost (Details)
12 Months Ended
Dec. 31, 2019
USD ($)
Leases [Abstract]  
Operating lease expense $ 42,863,000
Short-term lease expense (lease duration of twelve months or less at lease commencement) 22,992,000
Sublease income (33,428,000)
Lease cost $ 32,427,000