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Mortgage Servicing Rights (Tables) | 9 Months Ended
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Sep. 30, 2019
Transfers and Servicing [Abstract] |
Changes in the Company's MSRs | Changes in the Company’s MSRs were as follows:
Balance at January 1, 2019 | $ | 48,230 |
Capitalization | 8,183 |
Amortization | (4,995 | )
Valuation adjustment | (3,132 | )
Balance at September 30, 2019 | $ | 48,286 |
Data and key economic assumptions related to the Company's MSRs | Data and key economic assumptions related to the Company’s MSRs are as follows as of the dates presented:
| September 30, 2019 |  | December 31, 2018 |
Unpaid principal balance | $ | 4,761,925 |  |  | $ | 4,635,712 |  |
Weighted-average prepayment speed (CPR) | 12.12 | % |  | 7.95 | % |
Estimated impact of a 10% increase | $ | (2,280 | ) |  | $ | (1,264 | ) |
Estimated impact of a 20% increase | (4,380 | ) |  | (2,569 | ) |
Discount rate | 9.60 | % |  | 9.45 | % |
Estimated impact of a 10% increase | $ | (1,815 | ) |  | $ | (2,657 | ) |
Estimated impact of a 20% increase | (3,499 | ) |  | (5,103 | ) |
Weighted-average coupon interest rate | 4.07 | % |  | 4.04 | % |
Weighted-average servicing fee (basis points) | 28.36 |  |  | 27.47 |  |
Weighted-average remaining maturity (in years) | 6.08 |  | 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://fasb.org/us-gaap/role/ref/legacyRef -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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