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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | The following table presents the goodwill balance by reportable segment:
|  | Rail Technologies and Services |  | Infrastructure Solutions |  |  |  | Total
Balance as of December 31, 2020 |  | $ | 14,743 |  |  | $ | 5,597 |  |  |  |  | $ | 20,340 |
Foreign currency translation impact |  | 33 |  |  | — |  |  |  |  | 33 |
Balance as of March 31, 2021 |  | $ | 14,776 |  |  | $ | 5,597 |  |  |  |  | $ | 20,373 |
Schedule of Intangible Assets | The components of the Company’s intangible assets were as follows for the periods presented:
|  | March 31, 2021
|  | Weighted Average Amortization Period In Years |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Amount
Patents |  | 10 |  | 389 |  |  | (213) |  |  | 176 |
Customer relationships |  | 18 |  | 36,353 |  |  | (16,568) |  |  | 19,785 |
Trademarks and trade names |  | 16 |  | 7,816 |  |  | (4,283) |  |  | 3,533 |
Technology |  | 13 |  | 35,826 |  |  | (23,843) |  |  | 11,983 |
|  |  |  | $ | 80,384 |  |  | $ | (44,907) |  |  | $ | 35,477 |
|  | 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 March 31, 2021, estimated amortization expense for the remainder of 2021 and thereafter was as follows:
| Amortization Expense
Remainder of 2021 | $ | 4,393 |
2022 | 5,779 |
2023 | 5,308 |
2024 | 4,317 |
2025 | 2,453 |
2026 and thereafter | 13,227 |
| $ | 35,477 |

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