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Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Jun. 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 |
Foreign currency translation impact |  | 88 |  |  | — |  |  |  |  | 88 |
Balance as of June 30, 2021 |  | $ | 14,831 |  |  | $ | 5,597 |  |  |  |  | $ | 20,428 |
Schedule of Intangible Assets | The components of the Company’s intangible assets were as follows for the periods presented:
|  | June 30, 2021
|  | Weighted Average Amortization Period In Years |  | Gross Carrying Value |  | Accumulated Amortization |  | Net Carrying Amount
Patents |  | 10 |  | 394 |  |  | (220) |  |  | 174 |
Customer relationships |  | 18 |  | 36,402 |  |  | (17,190) |  |  | 19,212 |
Trademarks and trade names |  | 16 |  | 7,820 |  |  | (4,428) |  |  | 3,392 |
Technology |  | 13 |  | 35,841 |  |  | (24,581) |  |  | 11,260 |
|  |  |  | $ | 80,457 |  |  | $ | (46,419) |  |  | $ | 34,038 |
|  | 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 June 30, 2021, estimated amortization expense for the remainder of 2021 and thereafter was as follows:
| Amortization Expense
Remainder of 2021 | $ | 2,925 |
2022 | 5,786 |
2023 | 5,315 |
2024 | 4,324 |
2025 | 2,462 |
2026 and thereafter | 13,226 |
| $ | 34,038 |

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