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Transfers of financial assets and mortgage servicing assets
 6 Months Ended
Jun. 30, 2018
Transfers and Servicing of Financial Assets  
Transfers Of Financial Assets And Mortgage Servicing Assets

Note 11 – Transfers of financial assets and mortgage servicing assets

The Corporation typically transfers conforming residential mortgage loans in conjunction with GNMA and FNMA securitization transactions whereby the loans are exchanged for cash or securities and servicing rights. As seller, the Corporation has made certain representations and warranties with respect to the originally transferred loans and, in the past, has sold certain loans with credit recourse to a government-sponsored entity, namely FNMA. Refer to Note 20 to the Consolidated Financial Statements for a description of such arrangements.

No liabilities were incurred as a result of these securitizations during the quarters and six months ended June 30, 2018 and 2017 because they did not contain any credit recourse arrangements. During the quarter and six months ended June 30, 2018, the Corporation recorded a net gain of $2.3 million and $3.3 million, respectively (June 30, 2017 - $6.1 million and $11.1 million, respectively) related to the residential mortgage loans securitized.

The following tables present the initial fair value of the assets obtained as proceeds from residential mortgage loans securitized during the quarters and six months ended June 30, 2018 and 2017:

Proceeds Obtained During the Quarter Ended June 30, 2018
(In thousands)Level 1Level 2Level 3Initial Fair Value
Assets
Debt securities available-for-sale:
Mortgage-backed securities - FNMA$-$1,238$-$1,238
Total debt securities available-for-sale$-$1,238$-$1,238
Trading account debt securities:
Mortgage-backed securities - GNMA$-$97,363$-$97,363
Mortgage-backed securities - FNMA-19,203-19,203
Total trading account debt securities$-$116,566$-$116,566
Mortgage servicing rights$-$-$2,158$2,158
Total $-$117,804$2,158$119,962

Proceeds Obtained During the Six Months Ended June 30, 2018
(In thousands)Level 1Level 2Level 3Initial Fair Value
Assets
Debt securities available-for-sale:
Mortgage-backed securities - FNMA$-$6,960$-$6,960
Total debt securities available-for-sale$-$6,960$-$6,960
Trading account debt securities:
Mortgage-backed securities - GNMA$-$209,858$-$209,858
Mortgage-backed securities - FNMA-39,228-39,228
Total trading account debt securities$-$249,086$-$249,086
Mortgage servicing rights$-$-$4,573$4,573
Total $-$256,046$4,573$260,619

Proceeds Obtained During the Quarter Ended June 30, 2017
(In thousands)Level 1Level 2Level 3Initial Fair Value
Assets
Debt securities available-for-sale:
Mortgage-backed securities - FNMA$-$6,968$-$6,968
Total debt securities available-for-sale$-$6,968$-$6,968
Trading account debt securities:
Mortgage-backed securities - GNMA$-$135,961$-$135,961
Mortgage-backed securities - FNMA-30,455-30,455
Total trading account debt securities$-$166,416$-$166,416
Mortgage servicing rights$-$-$2,708$2,708
Total $-$173,384$2,708$176,092

Proceeds Obtained During the Six Months Ended June 30, 2017
(In thousands)Level 1Level 2Level 3Initial Fair Value
Assets
Debt securities available-for-sale:
Mortgage-backed securities - FNMA$-$11,720$-$11,720
Total debt securities available-for-sale$-$11,720$-$11,720
Trading account debt securities:
Mortgage-backed securities - GNMA$-$282,938$-$282,938
Mortgage-backed securities - FNMA-53,346-53,346
Total trading account debt securities$-$336,284$-$336,284
Mortgage servicing rights$-$-$5,178$5,178
Total $-$348,004$5,178$353,182

During the six months ended June 30, 2018, the Corporation retained servicing rights on whole loan sales involving approximately $24 million in principal balance outstanding (June 30, 2017 - $42 million), with realized gains of approximately $0.3 million (June 30, 2017 - gains of $1.5 million). All loan sales performed during the six months ended June 30, 2018 and 2017 were without credit recourse agreements.

The Corporation recognizes as assets the rights to service loans for others, whether these rights are purchased or result from asset transfers such as sales and securitizations. These mortgage servicing rights (“MSR”) are measured at fair value.

The Corporation uses a discounted cash flow model to estimate the fair value of MSRs. The discounted cash flow model incorporates assumptions that market participants would use in estimating future net servicing income, including estimates of prepayment speeds, discount rate, cost to service, escrow account earnings, contractual servicing fee income, prepayment and late fees, among other considerations. Prepayment speeds are adjusted for the Corporation’s loan characteristics and portfolio behavior.

The following table presents the changes in MSRs measured using the fair value method for the six months ended June 30, 2018 and 2017.

Residential MSRs
(In thousands)June 30, 2018June 30, 2017
Fair value at beginning of period$168,031$196,889
Additions4,9235,839
Changes due to payments on loans[1](6,852)(9,276)
Reduction due to loan repurchases(2,077)(1,102)
Changes in fair value due to changes in valuation model inputs or assumptions-(3,622)
Fair value at end of period$164,025$188,728
[1] Represents changes due to collection / realization of expected cash flows over time.

Residential mortgage loans serviced for others were $16.1 billion at June 30, 2018 and December 31, 2017.

Net mortgage servicing fees, a component of mortgage banking activities in the Consolidated Statements of Operations, include the changes from period to period in the fair value of the MSRs, including changes due to collection / realization of expected cash flows. The banking subsidiaries receive servicing fees based on a percentage of the outstanding loan balance. These servicing fees are credited to income when they are collected. At June 30, 2018 and 2017, those weighted average mortgage servicing fees were 0.30%. Under these servicing agreements, the banking subsidiaries do not generally earn significant prepayment penalty fees on the underlying loans serviced.

The section below includes information on assumptions used in the valuation model of the MSRs, originated and purchased.

Key economic assumptions used in measuring the servicing rights derived from loans securitized or sold by the Corporation during the quarters and six months ended June 30, 2018 and 2017 were as follows:

Quarters endedSix months ended
June 30, 2018June 30, 2017June 30, 2018June 30, 2017
Prepayment speed4.4%4.4%4.4%4.0%
Weighted average life (in years)11.410.911.411.1
Discount rate (annual rate)11.1%11.0%11.1%11.0%

Key economic assumptions used to estimate the fair value of MSRs derived from sales and securitizations of mortgage loans performed by the banking subsidiaries and servicing rights purchased from other financial institutions, and the sensitivity to immediate changes in those assumptions, were as follows as of the end of the periods reported:

Originated MSRsPurchased MSRs
June 30,December 31,June 30,December 31,
(In thousands)2018201720182017
Fair value of servicing rights$69,232$73,951$94,793$94,080
Weighted average life (in years)7.67.36.96.5
Weighted average prepayment speed (annual rate)4.4%5.1%4.9%5.7%
Impact on fair value of 10% adverse change$(1,231)$(1,503)$(1,761)$(2,070)
Impact on fair value of 20% adverse change$(2,430)$(2,976)$(3,473)$(3,999)
Weighted average discount rate (annual rate)11.5%11.5%11.0%11.0%
Impact on fair value of 10% adverse change$(3,108)$(3,091)$(4,101)$(3,785)
Impact on fair value of 20% adverse change$(5,985)$(5,971)$(7,902)$(7,235)

The sensitivity analyses presented in the tables above for servicing rights are hypothetical and should be used with caution. As the figures indicate, changes in fair value based on a 10 and 20 percent variation in assumptions generally cannot be extrapolated because the relationship of the change in assumption to the change in fair value may not be linear. Also, in the sensitivity tables included herein, the effect of a variation in a particular assumption on the fair value of the retained interest is calculated without changing any other assumption. In reality, changes in one factor may result in changes in another (for example, increases in market interest rates may result in lower prepayments and increased credit losses), which might magnify or counteract the sensitivities.

At June 30, 2018, the Corporation serviced $1.4 billion (December 31, 2017 - $1.5 billion) in residential mortgage loans with credit recourse to the Corporation.

Under the GNMA securitizations, the Corporation, as servicer, has the right to repurchase (but not the obligation), at its option and without GNMA’s prior authorization, any loan that is collateral for a GNMA guaranteed mortgage-backed security when certain delinquency criteria are met. At the time that individual loans meet GNMA’s specified delinquency criteria and are eligible for repurchase, the Corporation is deemed to have regained effective control over these loans if the Corporation was the pool issuer. At June 30, 2018, the Corporation had recorded $298 million in mortgage loans on its Consolidated Statements of Financial Condition related to this buy-back option program (December 31, 2017 - $840 million). As long as the Corporation continues to service the loans that continue to be collateral in a GNMA guaranteed mortgage-backed security, the MSR is recognized by the Corporation. During the six months ended June 30, 2018, the Corporation repurchased approximately $189 million (June 30, 2017 - $77 million) of mortgage loans under the GNMA buy-back option program. The determination to repurchase these loans was based on the economic benefits of the transaction, which results in a reduction of the servicing costs for these severely delinquent loans, mostly related to principal and interest advances. Furthermore, due to their guaranteed nature, the risk associated with the loans is minimal. The Corporation places these loans under its loss mitigation programs and once brought back to current status, these may be either retained in portfolio or re-sold in the secondary market.