Property, Plant, and Equipment

12 Months Ended

Dec. 31, 2023

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT, AND EQUIPMENT

At December 31, 2023 and 2022, property, plant and equipment consisted of the following:


	Depreciable Lives	2023		2022
Land	—	$	18,818	$	21,649
Improvements to land and buildings	10-25 years	133,440		131,521
Storage equipment	5-50 years	129,456		124,412
Marine vessels	4-25 years	187,182		180,684
Operating plant and equipment	3-50 years	376,170		365,952
Furniture, fixtures and other equipment	3-20 years	7,527		11,726
Transportation equipment	3-7 years	47,017		50,836
Construction in progress		19,176		16,755
		$	918,786	$	903,535

Depreciation expense for the years ended December 31, 2023, 2022 and 2021 was $44,700, $50,186 and $52,289, respectively, which includes amortization of fixed assets acquired under capital lease obligations of $6, $92, and $164. Gross assets under capital leases were $0 and $83 at December 31, 2023 and 2022, respectively. Accumulated amortization associated with capital leases was $0 and $44 at December 31, 2023 and 2022, respectively.

Additions to property, plant and equipment included in accounts payable at December 31, 2023, 2022 and 2021 were $2,943, $1,949, and $3,229, respectively. No equipment was purchased under capital lease obligations for the years ended December 31, 2023, 2022, and 2021.