Accounts Payable and Accrued Expenses - Components of Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Accounts payable	$ 380,121	$ 434,827
Payroll and benefits, including incentive compensation	48,477	57,164
Health insurance, workers’ compensation and other insurance costs	40,950	58,706
Customer rebates	33,717	41,266
Other accrued liabilities	62,467	107,698
Total	$ 565,732	$ 699,661