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Loan Servicing (Tables) | 12 Months Ended
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Dec. 31, 2021
Mortgage Banking [Abstract] |
Servicing Asset at Amortized Cost | The following schedules disclose the change in the carrying value of mortgage servicing rights that is included in other assets, principal balances of loans serviced and the fair value of mortgage servicing rights:
| Years ended
(Dollars in thousands) | December 31, 2021 |  | December 31, 2020 |  | December 31, 2019
Carrying value at beginning of period | $ | 8,976 |  |  | 1,618 |  |  | 1,545 |
Acquisitions | 1,354 |  |  | — |  |  | — |
Additions | 4,435 |  |  | 8,298 |  |  | 325 |
Amortization | (1,926) |  |  | (940) |  |  | (252) |
Carrying value at end of period | $ | 12,839 |  |  | 8,976 |  |  | 1,618 |
Principal balances of loans serviced for others | $ | 1,639,058 |  |  | 1,269,080 |  |  | 185,897 |
Fair value of servicing rights | $ | 16,938 |  |  | 12,087 |  |  | 1,763 |

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- Definition Tabular disclosure of activity in the balance of servicing assets subsequently measured at amortized cost. Includes, but is not limited to, beginning and ending balances, additions, disposals, and amortization. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746 + Details
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