v3.26.3
PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES
 9 Months Ended
Sep. 30, 2026
Property, Plant, and Equipment [Abstract]  
PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES PROPERTY, PLANT, EQUIPMENT, AND MINERAL PROPERTIES
    Property, plant, equipment, and mineral properties were comprised of the following (in thousands):
September 30, 2026December 31, 2025
Land$519 $519 
Ponds and land improvements87,863 87,881 
Mineral properties and development costs157,704 155,221 
Buildings and plant99,725 97,924 
Machinery and equipment336,142 324,327 
Vehicles8,387 8,061 
Office equipment and improvements9,569 10,000 
Operating lease ROU assets3,027 3,181 
Construction in progress22,060 13,925 
Total property, plant, equipment, and mineral properties, gross$724,996 $701,039 
Less: accumulated depreciation, depletion, and amortization(427,518)(402,283)
Total property, plant, equipment, and mineral properties, net$297,478 $298,756 


For the nine months ended September 30, 2026, we recorded no impairment expense. For the nine months ended September 30, 2025, we recorded impairment expense of $1.9 million related to certain assets within our Trio® segment. The fair value of these assets was estimated using expected proceeds from an orderly sale of the assets.
We incurred the following expenses for depreciation, depletion, and amortization, including expenses capitalized into inventory, for the following periods (in thousands):
Three Months Ended September 30,Nine Months Ended September 30,
2026202520262025
Depreciation$8,364 $7,868 $24,869 $23,777 
Depletion523 638 2,829 2,831 
Amortization213 337 653 1,037 
Total incurred$9,100 $8,843 $28,351 $27,645