Leases - Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Operating Leases:
Right-of-use assets, net	$ 96,800	$ 52,065
Current portion of operating lease liabilities	26,577	12,544
Operating lease liabilities	67,995	36,974
Finance Leases:
Property, plant and equipment, net	4,179	3,519
Current maturities of long-term debt	1,335	1,237
Long-term debt	$ 2,903	$ 2,218