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Property, Plant and Equipment, net | 9 Months Ended
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Sep. 30, 2024
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment, net | Property, Plant and Equipment, net Net property, plant and equipment consisted of:
| September 30, 2024 |  | December 31, 2023
Machinery, equipment and tooling | $ | 41,832 |  |  | $ | 40,632 |
SmartSystems | 32,299 |  |  | 30,651 |
Vehicles | 3,800 |  |  | 4,082 |
Furniture and fixtures | 1,368 |  |  | 1,466 |
Plant and building | 218,055 |  |  | 213,756 |
Real estate properties | 6,980 |  |  | 7,209 |
Railroad and sidings | 35,728 |  |  | 35,491 |
Land and land improvements | 40,704 |  |  | 40,519 |
Asset retirement obligations | 22,910 |  |  | 22,910 |
Mineral properties | 7,442 |  |  | 7,442 |
Deferred mining costs | 3,838 |  |  | 3,802 |
Construction in progress | 4,612 |  |  | 6,270 |
| 419,568 |  |  | 414,230 |
Less: accumulated depreciation and depletion | 177,679 |  |  | 159,138 |
Total property, plant and equipment, net | $ | 241,889 |  |  | $ | 255,092 |
Depreciation expense was $6,946 and $6,776 for the three months ended September 30, 2024 and 2023, respectively, and $20,924 and $19,661 for the nine months ended September 30, 2024 and 2023, respectively. During the three months ended September 30, 2024, the Company relocated its manufacturing facility from Saskatoon, Canada to Oakdale, Wisconsin in the United States and recorded a net loss of $1,063 on the disposal of fixed assets related to this relocation.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//360/tableOfContent Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 6 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Accounting Standards Codification -Section 50 -Paragraph 7 -SubTopic 360 -Topic 958 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480321/958-360-50-7 + Details
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