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Mortgage Servicing Rights (Tables) | 9 Months Ended
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Sep. 30, 2017
Transfers and Servicing [Abstract] |
Changes in the Company's MSRs | Changes in the Company’s MSRs were as follows:
Balance at January 1, 2017 | $ | 26,302 |
Capitalization | 12,379 |
Amortization | (2,751 | )
Balance at September 30, 2017 | $ | 35,930 |
Data and key economic assumptions related to the Company's MSRs | Data and key economic assumptions related to the Company’s MSRs as of September 30, 2017 and December 31, 2016 are as follows:
| September 30, 2017 |  | December 31, 2016
Unpaid principal balance | $ | 3,703,064 |  |  | $ | 2,763,344 |
Weighted-average prepayment speed (CPR) | 8.89 | % |  | 7.34 | %
Estimated impact of a 10% increase | $ | (1,501 | ) |  | $ | (1,034 | )
Estimated impact of a 20% increase | (2,910 | ) |  | (2,010 | )
Discount rate | 9.68 | % |  | 9.64 | %
Estimated impact of a 10% increase | $ | (1,711 | ) |  | $ | (1,368 | )
Estimated impact of a 20% increase | (3,292 | ) |  | (2,629 | )
Weighted-average coupon interest rate | 3.89 | % |  | 3.83 | %
Weighted-average servicing fee (basis points) | 26.22 |  |  | 25.87 |
Weighted-average remaining maturity (in years) | 14.94 |  |  | 11.11 |

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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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122739-111746 + Details
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- References No definition available. + Details
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