Leases - Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Amortization of right-of-use-assets	$ 6,901	$ 22,044
Interest on lease liabilities	4,429	8,355
Total lease costs	102,605	153,330
Commissions, transportation and other
Lessee, Lease, Description [Line Items]
Operating lease costs	38,349	76,226
Other operating expenses
Lessee, Lease, Description [Line Items]
Operating lease costs	30,955	27,868
Marketing, selling and administrative expenses
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 21,971	$ 18,837