Annual report pursuant to Section 13 and 15(d)

Leases - Components of Lease Expense and Revenue (Details)

v3.20.4
Leases - Components of Lease Expense and Revenue (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Leases [Abstract]    
Operating lease expense $ 19,406 $ 31,596
Variable lease expense 9,705 14,284
Short-term lease expense 11,076 50,832
Finance lease cost:    
Amortization of right-to-use assets 1,924 1,765
Interest on lease liabilities 1,072 1,239
Operating lease revenue 173 446
Sublease income $ 1,616 $ 1,615