Other information related to our leases is as follows: 81 December 31, (Amounts in thousands) 2020 2019 Operating Lease Costs: Fixed lease expense(3) $ 57,050  $ 57,450  Variable lease expense(3) 7,299  6,492  Total operating lease expense $ 64,349  $ 63,942  Finance Lease Costs: Depreciation of finance lease ROU assets(3) $ 5,392  $ 4,729  Interest on lease liabilities(4) 646  352  Total finance lease expense $ 6,038  $ 5,081  The costs components of operating and finance leases are as follows: December 31, (Amounts in thousands) 2020 2019 Finance Leases: ROU assets recorded under finance leases $ 27,624  $ 19,606  Accumulated depreciation associated with finance leases (9,463) (7,551) Total finance leases ROU assets, net(1) $ 18,161  $ 12,055  Total finance leases liabilities(2) $ 18,287  $ 11,788  (1) Included in property plant and equipment, net (2) Included in debt due within one year and long-term debt due after one year, accordingly (3) Included in cost of sales and selling, general and administrative expense, accordingly (4) Included in interest expense