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Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Finite-Lived Intangible Assets | Finite-lived intangible assets primarily represent customer relationships and consist of the following at December 31:
(in thousands) |  | 2020 |  | 2019
Cost |  | $ | 111,041 |  |  | $ | 71,853 |
Accumulated Amortization |  | (26,372) |  |  | (12,856) |
Carrying Value |  | $ | 84,669 |  |  | $ | 58,997 |
Schedule of Expected Aggregate Annual Amortization Expense for Finite-Lived intangible Assets | Expected aggregate annual amortization expense for finite-lived intangible assets in each of the five succeeding years assuming no new acquisitions or impairments is shown in the table below:
(in thousands) |  |
2021 |  | $ | 13,656 |
2022 |  | 13,486 |
2023 |  | 13,451 |
2024 |  | 12,494 |
2025 |  | $ | 12,412 |

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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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