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Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Summary of Carrying Amount of Intangible Assets by Segment and by Major Asset Class | The following table shows changes in the carrying amount of intangible assets, net, by reportable segment.
|  |  |  | Mobile Solutions |  | Power Solutions |  | Total
Balance as of December 31, 2018 |  |  |  | $ | 35,892 |  |  | $ | 95,991 |  |  | $ | 131,883 |
Amortization |  |  |  | (3,479) |  |  | (10,994) |  |  | (14,473) |
Other |  |  |  | 3 |  |  | — |  |  | 3 |
Balance as of December 31, 2019 |  |  |  | 32,416 |  |  | 84,997 |  |  | 117,413 |
Amortization |  |  |  | (3,354) |  |  | (10,994) |  |  | (14,348) |
Balance as of December 31, 2020 |  |  |  | $ | 29,062 |  |  | $ | 74,003 |  |  | $ | 103,065 |
The following table shows the cost and accumulated amortization of our intangible assets as of December 31, 2020 and 2019.
|  |  |  | December 31, 2020 |  | December 31, 2019
|  | Estimated Useful Life in Years |  | Gross Carrying Value as of Acquisition Date |  | Accumulated Amortization |  | Net Carrying Value |  | Gross Carrying Value as of Acquisition Date |  | Accumulated Amortization |  | Net Carrying Value
Customer relationships |  | 12 - 20 |  | $ | 173,746 |  |  | $ | (74,250) |  |  | $ | 99,496 |  |  | $ | 173,746 |  |  | $ | (60,603) |  |  | $ | 113,143 |
Trademark and trade name |  | 8 - 15 |  | 7,527 |  |  | (3,958) |  |  | 3,569 |  |  | 7,527 |  |  | (3,257) |  |  | 4,270 |
Total identified intangible assets |  |  |  | $ | 181,273 |  |  | $ | (78,208) |  |  | $ | 103,065 |  |  | $ | 181,273 |  |  | $ | (63,860) |  |  | $ | 117,413 |
Summary of Estimated Amortization Expense | The following table shows estimated future amortization expense for the next five years and thereafter.
Year Ending December 31, |
2021 | $ | 14,347 |
2022 | 14,347 |
2023 | 14,262 |
2024 | 13,919 |
2025 | 13,919 |
Thereafter | 32,271 |
Total | $ | 103,065 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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