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Mortgage Servicing Rights (Tables) | 12 Months Ended
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Dec. 31, 2020
Transfers and Servicing [Abstract] |
Changes in the Company's mortgage servicing rights | Changes in the Company’s mortgage servicing rights (“MSRs”) were as follows, for the periods presented:
Carrying Value at January 1, 2019 | $ | 48,230 |
Capitalization | 13,823 |
Amortization | (7,009) |
Valuation adjustment | (1,836) |
Carrying Value at December 31, 2019 | $ | 53,208 |
Capitalization | 41,235 |
Amortization | (19,723) |
Valuation adjustment | (11,726) |
Carrying Value at December 31, 2020 | $ | 62,994 |
Data and key economic assumptions related to the Company's mortgage servicing rights | Data and key economic assumptions related to the Company’s mortgage servicing rights as of December 31 are as follows:
| 2020 |  | 2019 |  | 2018
Unpaid principal balance | $ | 7,322,671 |  |  | $ | 4,871,155 |  |  | $ | 4,635,712 |
Weighted-average prepayment speed (CPR) | 15.05 | % |  | 11.48 | % |  | 7.95 | %
Estimated impact of a 10% increase | $ | (4,001) |  |  | $ | (2,469) |  |  | $ | (1,264) |
Estimated impact of a 20% increase | (7,674) |  |  | (4,774) |  |  | (2,569) |
Discount rate | 9.86 | % |  | 9.69 | % |  | 9.45 | %
Estimated impact of a 100bp increase | $ | (2,144) |  |  | $ | (2,027) |  |  | $ | (2,657) |
Estimated impact of a 200bp increase | (4,144) |  |  | (3,908) |  |  | (5,103) |
Weighted-average coupon interest rate | 3.58 | % |  | 4.04 | % |  | 4.04 | %
Weighted-average servicing fee (basis points) | 29.94 |  | 29.20 |  | 27.47
Weighted-average remaining maturity (in years) | 5.14 |  | 6.35 |  | 8.03

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- Definition Schedule of fair value assumption related to mortgage servicing rights. + References No definition available. + Details
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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=116651436&loc=d3e122739-111746 + Details
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- References No definition available. + Details
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