| Schedule of Property, Plant, Equipment, and Mineral Properties |
Property, plant, equipment, and mineral properties were comprised of the following (in thousands): | | | | | | | | | | | | | | | | | June 30, 2026 | | December 31, 2025 | | Land | | $ | 519 | | | $ | 519 | | | Ponds and land improvements | | 88,117 | | | 87,881 | | | Mineral properties and development costs | | 157,649 | | | 155,221 | | | Buildings and plant | | 99,010 | | | 97,924 | | | Machinery and equipment | | 332,882 | | | 324,327 | | | Vehicles | | 8,507 | | | 8,061 | | | Office equipment and improvements | | 9,497 | | | 10,000 | | | Operating lease ROU assets | | 3,181 | | | 3,181 | | | | | | | | Construction in progress | | 15,718 | | | 13,925 | | | Total property, plant, equipment, and mineral properties, gross | | $ | 715,080 | | | $ | 701,039 | | | Less: accumulated depreciation, depletion, and amortization | | (419,668) | | | (402,283) | | | Total property, plant, equipment, and mineral properties, net | | $ | 295,412 | | | $ | 298,756 | |
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| Schedule of Depreciation, Depletion and Accretion |
We incurred the following expenses for depreciation, depletion, and amortization, including expenses capitalized into inventory, for the following periods (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, | | Six Months Ended June 30, | | | 2026 | | 2025 | | 2026 | | 2025 | | Depreciation | | $ | 8,358 | | | $ | 7,954 | | | $ | 16,509 | | | $ | 15,909 | | | Depletion | | 722 | | | 643 | | | 2,306 | | | 2,193 | | | Amortization of right of use assets | | 220 | | | 349 | | | 436 | | | 700 | | | Total incurred | | $ | 9,300 | | | $ | 8,946 | | | $ | 19,251 | | | $ | 18,802 | |
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