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Mortgage Servicing Rights, Net (Tables) | 3 Months Ended
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Mar. 31, 2018
Transfers And Servicing [Abstract] |
Summary of Changes In Carrying Amount of Mortgage Servicing Rights | The changes in the carrying amount of mortgage servicing rights for the three months ended March 31, 2018 and 2017 were as follows (in thousands):
|  | Three Months Ended March 31, |
|  | 2018 |  |  | 2017 |
Mortgage Servicing Rights |  |  |  |  |  |  |  |
Beginning balance |  | $ | 399,349 |  |  | $ | 347,558 |
Additions |  |  | 6,389 |  |  |  | 28,806 |
Purchases from an affiliate |  |  | 509 |  |  |  | — |
Amortization |  |  | (19,294 | ) |  |  | (17,175 | )
Ending balance |  | $ | 386,953 |  |  | $ | 359,189 |
Valuation Allowance |  |  |  |  |  |  |  |
Beginning balance |  | $ | (6,723 | ) |  | $ | (7,742 | )
Decrease (increase) |  |  | 1,296 |  |  |  | 3,168 |
Ending balance |  |  | (5,427 | ) |  |  | (4,574 | )
Net balance |  | $ | 381,526 |  |  | $ | 354,615 |
Schedule of Contractually Specified Servicing Fees and Ancillary Fees Earned | The amount of contractually specified servicing fees (including primary and special servicing fees) and ancillary fees (including yield maintenance fees) earned by the Company were as follows:
|  | Three Months Ended March 31, |
|  | 2018 |  |  | 2017 |
Servicing fees |  | $ | 25,132 |  |  | $ | 22,050 |
Escrow interest and placement fees |  |  | 2,967 |  |  |  | 1,459 |
Ancillary fees |  |  | 827 |  |  |  | 1,323 |
Total Servicing fees |  | $ | 28,926 |  |  | $ | 24,832 |

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- Definition Schedule of contractually specified servicing fees and ancillary fees earned. + 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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