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Mortgage Servicing Rights (Tables) | 9 Months Ended
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Sep. 30, 2022
Mortgage Servicing Rights |
Schedule of estimated future amortization expense for MSRs | ​
​ | ​ | ​ | ​
​ | ​ | Estimated
(dollars in thousands) |  | Amortization
Under one year | ​ | $ | 1,038
One to two years | ​ | ​ | 912
Two to three years | ​ | ​ | 800
Three to four years | ​ | ​ | 699
Four to five years | ​ | ​ | 611
Schedule of details of the Company's MSRs | ​
​ | ​ | ​ | ​ | ​ | ​
​ | September 30, | ​ | December 31,
(dollars in thousands) | 2022 |  | 2021
Gross carrying amount | $ | 69,254 | ​ | $ | 69,103
Less: accumulated amortization | ​ | 62,388 | ​ | ​ | 60,801
Net carrying value | $ | 6,866 | ​ | $ | 8,302
​ | ​ | ​ | ​ | ​ | ​
Schedule of changes in amortized MSRs | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
(dollars in thousands) | 2022 |  | 2021 |  | 2022 |  | 2021
Balance at beginning of period | $ | 7,152 | ​ | $ | 10,007 | ​ | $ | 8,302 | ​ | $ | 10,731
Originations | ​ | 47 | ​ | ​ | 101 | ​ | ​ | 151 | ​ | ​ | 1,206
Amortization | ​ | (333) | ​ | ​ | (1,001) | ​ | ​ | (1,587) | ​ | ​ | (2,830)
Balance at end of period | $ | 6,866 | ​ | $ | 9,107 | ​ | $ | 6,866 | ​ | $ | 9,107
Fair value of amortized MSRs at beginning of period | $ | 14,969 | ​ | $ | 13,480 | ​ | $ | 12,243 | ​ | $ | 14,029
Fair value of amortized MSRs at end of period | $ | 14,945 | ​ | $ | 12,080 | ​ | $ | 14,945 | ​ | $ | 12,080
Schedule of quantitative assumptions used in determining lower of cost or fair value of MSRs | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | September 30, 2022 | ​ | December 31, 2021 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​
​ |  | Range | ​ | Average | ​ | Range | ​ | Average | ​
Conditional prepayment rate | ​ | 8.06 | % | - | 16.41 | % | 8.19 | % | 13.77 | % | - | 25.19 | % | 14.61 | %
Life in years (of the MSR) | ​ | 3.04 | ​ | - | 6.94 | ​ | 6.81 | ​ | 1.99 | ​ | - | 5.31 | ​ | 5.03 | ​
Weighted-average coupon rate | ​ | 3.55 | % | - | 6.31 | % | 3.68 | % | 3.58 | % | - | 6.56 | % | 3.71 | %
Discount rate | ​ | 10.00 | % | - | 10.02 | % | 10.01 | % | 10.00 | % | - | 10.01 | % | 10.00 | %

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- Definition Tabular disclosure of all information related to the key inputs and assumptions used in measuring the fair value of assets obtained or liabilities incurred, as the result of a sale of financial assets, relating to the transferor's continuing involvement, if any, at the time of securitization, asset-backed financing arrangement, or similar transfer (including at a minimum, but not limited to, and if applicable, quantitative information about discount rates, expected prepayments including the expected weighted-average life of prepayable financial assets, and anticipated credit losses, including expected static pool losses). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=121570589&loc=d3e107207-111719 + Details
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