| Components of property, plant and equipment |
The components of Property, plant and equipment, net are as follows: | | | | | | | | | | | | | | | | | | | (in thousands) | September 30,
2022 | | December 31,
2021 | | September 30,
2021 | | Land | $ | 38,508 | | | $ | 39,162 | | | $ | 39,159 | | | Land improvements and leasehold improvements | 93,026 | | | 91,122 | | | 89,941 | | | Buildings and storage facilities | 366,453 | | | 368,577 | | | 368,678 | | | Machinery and equipment | 956,471 | | | 936,476 | | | 920,232 | | | Construction in progress | 40,599 | | | 20,676 | | | 24,556 | | | 1,495,057 | | | 1,456,013 | | | 1,442,566 | | | Less: accumulated depreciation | 729,118 | | | 669,984 | | | 644,906 | | | Property, plant and equipment, net | $ | 765,939 | | | $ | 786,029 | | | $ | 797,660 | |
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