Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lessee, Lease, Description [Line Items]
Lease costs	$ 10,159	$ 26,284
Cost of sales
Lessee, Lease, Description [Line Items]
Lease costs	9,617	25,115
Short-term operating lease costs	2,800	6,600
Selling, general and administrative
Lessee, Lease, Description [Line Items]
Lease costs	542	1,169
Short-term operating lease costs	$ 100	$ 200