XML 24 R11.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

Property, Plant and Equipment, net | 3 Months Ended
--- | ---
Mar. 31, 2024
Property, Plant and Equipment [Abstract] |
Property, Plant and Equipment, net | Property, Plant and Equipment, net Net property, plant and equipment consisted of:
| March 31, 2024 |  | December 31, 2023
Machinery, equipment and tooling | $ | 41,748 |  |  | $ | 40,632 |
SmartSystems | 31,127 |  |  | 30,651 |
Vehicles | 4,240 |  |  | 4,082 |
Furniture and fixtures | 1,466 |  |  | 1,466 |
Plant and building | 215,098 |  |  | 213,756 |
Real estate properties | 7,209 |  |  | 7,209 |
Railroad and sidings | 35,719 |  |  | 35,491 |
Land and land improvements | 40,528 |  |  | 40,519 |
Asset retirement obligations | 22,910 |  |  | 22,910 |
Mineral properties | 7,442 |  |  | 7,442 |
Deferred mining costs | 4,207 |  |  | 3,802 |
Construction in progress | 5,742 |  |  | 6,270 |
| 417,436 |  |  | 414,230 |
Less: accumulated depreciation and depletion | 166,052 |  |  | 159,138 |
Total property, plant and equipment, net | $ | 251,384 |  |  | $ | 255,092 |
Depreciation expense was $6,981 and $6,342 for the three months ended March 31, 2024 and 2023, respectively.

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration