Property, Plant and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Components of property, plant and equipment
Land	$ 39,183	$ 39,162	$ 39,357
Land improvements and leasehold improvements	91,061	91,122	92,656
Buildings and storage facilities	369,850	368,577	379,245
Machinery and equipment	946,352	936,476	912,372
Construction in progress	23,512	20,676	16,108
Property, plant and equipment, gross	1,469,958	1,456,013	1,439,738
Less: accumulated depreciation	697,713	669,984	599,788
Property, plant and equipment, net	$ 772,245	$ 786,029	$ 839,950