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Intangible assets (Tables) | 12 Months Ended
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Dec. 31, 2020
Intangible Assets, Net (Excluding Goodwill) [Abstract] |
Gross Carrying Amount and Accumulated Amortization by Intangible Asset Class | The gross carrying amount and accumulated amortization by intangible asset class were as follows:
| (Dollars in thousands) |  | (Dollars in thousands)
| December 31, 2020 |  | December 31, 2019
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Value |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Value
Trade names | $ | 11,289 |  |  | $ | (2,733) |  |  | $ | 8,556 |  |  | $ | 8,422 |  |  | $ | (2,020) |  |  | $ | 6,402 |
Customer relationships | 12,349 |  |  | (2,402) |  |  | 9,947 |  |  | 7,337 |  |  | (1,404) |  |  | 5,933 |
| $ | 23,638 |  |  | $ | (5,135) |  |  | $ | 18,503 |  |  | $ | 15,759 |  |  | $ | (3,424) |  |  | $ | 12,335 |
Schedule of Estimated Aggregate Amortization Expense for Next Five Years | The estimated aggregate amortization expense for each of the next five years are as follows:
|  | (Dollars in thousands)
Year |  | Amortization
2021 |  | $ | 2,662 |
2022 |  | 2,457 |
2023 |  | 2,343 |
2024 |  | 2,247 |
2025 |  | 1,983 |
Thereafter |  | 6,811 |
|  | $ | 18,503 |

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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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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + 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 + Details
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