v3.25.3
Property, Plant, and Equipment
 9 Months Ended
Sep. 30, 2025
Property, Plant and Equipment [Abstract]  
Property, Plant, and Equipment
(4) Property, Plant, and Equipment
Property, plant, and equipment, net consisted of the following:
(in thousands)September 30, 2025December 31, 2024
Machinery and equipment $1,422,920 $1,435,691 
ROU finance lease25,543 25,076 
Buildings and improvements 18,189 18,188 
Automotive equipment 16,279 16,279 
Land and improvements 15,257 14,959 
Construction in progress 42,691 30,623 
Other3,261 2,939 
1,544,140 1,543,755 
Less: Accumulated depreciation and amortization(838,816)(808,164)
Total property, plant, and equipment, net$705,324 $735,591 
For the three and nine months ended September 30, 2025, depreciation and amortization expense related to property, plant, and equipment was $19.6 million and $57.8 million, respectively, compared to $24.5 million and $63.3 million for the three and nine months ended September 30, 2024, respectively. Depreciation expense for the three and nine months ended September 30, 2025 includes an additional $2.2 million in both periods, resulting from the Partnership updating the estimated useful lives of certain assets due to planned asset retirements by the end of 2026, primarily related to an ammonia expansion project.