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Mortgage Servicing Rights (Tables) | 12 Months Ended
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Dec. 31, 2016
Transfers and Servicing [Abstract] |
Changes in the Company's mortgage servicing rights | Changes in the Company’s mortgage servicing rights (“MSRs”) were as follows:
Carrying value at January 1, 2015 | $ | 11,662 |
Additions through acquisition | 10,429 |
Capitalization | 10,793 |
Amortization | (3,242 | )
Carrying value at December 31, 2015 | $ | 29,642 |
Sale of MSRs | (18,477 | )
Capitalization | 18,061 |
Amortization | (2,884 | )
Impairment | (40 | )
Carrying value at December 31, 2016 | $ | 26,302 |
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:
| 2016 |  | 2015 |  | 2014
Unpaid principal balance | $ | 2,763,344 |  |  | $ | 3,090,839 |  |  | $ | 1,178,390 |
Weighted-average prepayment speed (CPR) | 7.34 | % |  | 8.89 | % |  | 8.25 | %
Estimated impact of a 10% increase | $ | (1,034 | ) |  | $ | (1,203 | ) |  | $ | (1,038 | )
Estimated impact of a 20% increase | (2,010 | ) |  | (2,330 | ) |  | (1,441 | )
Discount rate | 9.64 | % |  | 9.51 | % |  | 10.76 | %
Estimated impact of a 100bp increase | $ | (1,368 | ) |  | $ | (1,357 | ) |  | $ | (1,010 | )
Estimated impact of a 200bp increase | (2,629 | ) |  | (2,612 | ) |  | (1,378 | )
Weighted-average coupon interest rate | 3.83 | % |  | 3.97 | % |  | 3.84 | %
Weighted-average servicing fee (basis points) | 25.87 |  |  | 25.04 |  |  | 25.04 |
Weighted-average remaining maturity (in years) | 11.11 |  |  | 15.23 |  |  | 24.41 |

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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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