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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The following table presents the changes in goodwill balance by reportable segment for the period presented:
|  | Rail Technologies and Services |  | Infrastructure Solutions |  |  |  | Total
Balance as of December 31, 2020 |  | $ | 14,743 |  |  | $ | 5,597 |  |  |  |  | $ | 20,340 |
Larken purchase price adjustment |  | — |  |  | (21) |  |  |  |  | (21) |
Foreign currency translation impact |  | (172) |  |  | — |  |  |  |  | (172) |
Balance as of September 30, 2021 |  | $ | 14,571 |  |  | $ | 5,576 |  |  |  |  | $ | 20,147 |
Schedule of Intangible Assets | The components of the Company’s intangible assets were as follows for the periods presented:
|  | September 30, 2021
|  | Weighted Average Amortization Period In Years |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Amount
Patents |  | 10 |  | $ | 385 |  |  | $ | (218) |  |  | $ | 167 |
Customer relationships |  | 18 |  | 36,133 |  |  | (17,610) |  |  | 18,523 |
Trademarks and trade names |  | 16 |  | 7,798 |  |  | (4,557) |  |  | 3,241 |
Technology |  | 13 |  | 35,769 |  |  | (25,250) |  |  | 10,519 |
|  |  |  | $ | 80,085 |  |  | $ | (47,635) |  |  | $ | 32,450 |
|  | December 31, 2020
|  | Weighted Average Amortization Period In Years |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Amount
Patents |  | 10 |  | $ | 383 |  |  | $ | (206) |  |  | $ | 177 |
Customer relationships |  | 18 |  | 36,269 |  |  | (15,914) |  |  | 20,355 |
Trademarks and trade names |  | 16 |  | 7,809 |  |  | (4,135) |  |  | 3,674 |
Technology |  | 13 |  | 35,815 |  |  | (23,124) |  |  | 12,691 |
|  |  |  | $ | 80,276 |  |  | $ | (43,379) |  |  | $ | 36,897 |
Estimated Future Amortization | As of September 30, 2021, estimated amortization expense for the remainder of 2021 and thereafter was as follows:
| Amortization Expense
Remainder of 2021 | $ | 1,445 |
2022 | 5,749 |
2023 | 5,278 |
2024 | 4,284 |
2025 | 2,467 |
2026 and thereafter | 13,227 |
| $ | 32,450 |

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