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Mortgage Servicing Rights
12 Months Ended
Dec. 31, 2016
Disclosures Pertaining to Servicing Assets and Servicing Liabilities [Abstract]  
Mortgage Servicing Rights
Mortgage Servicing Rights (MSRs”)

Following is a summary of the changes in the carrying value of MSRs, accounted for at fair value, for the years ended December 31, 2016, 2015 and 2014:

 
 
December 31,
 
December 31,
 
December 31,
(Dollars in thousands)
 
2016
 
2015
 
2014
Balance at beginning of year
 
$
9,092

 
$
8,435

 
$
8,946

Additions from loans sold with servicing retained
 
13,091

 
1,759

 
213

Additions from acquisitions
 

 

 
704

Estimate of changes in fair value due to:
 
 
 
 
 
 
Payoffs and paydowns
 
(2,325
)
 
(1,315
)
 
(976
)
Changes in valuation inputs or assumptions
 
(755
)
 
213

 
(452
)
Fair value at end of year
 
$
19,103

 
$
9,092

 
$
8,435

Unpaid principal balance of mortgage loans serviced for others
 
$
1,784,760

 
$
939,819

 
$
877,899



The Company recognizes MSR assets upon the sale of residential real estate loans when it retains the obligation to service the loans and the servicing fee is more than adequate compensation. Additionally, in 2014, the Company recognized MSRs related to certain agricultural and farmland-related loans purchased from an unaffiliated bank. The initial recognition of MSR assets from loans sold with servicing retained and subsequent changes in fair value of all MSRs are recognized in mortgage banking revenue. MSRs are subject to changes in value from actual and expected prepayment of the underlying loans. The Company does not specifically hedge the value of its MSRs.

Fair values are determined by using a discounted cash flow model that incorporates the objective characteristics of the portfolio as well as subjective valuation parameters that purchasers of servicing would apply to such portfolios sold into the secondary market. The subjective factors include loan prepayment speeds, discount rates, servicing costs and other economic factors. On at least an annual basis, the Company corroborates its calculated MSR fair value by comparing such value to a separately calculated fair value provided by a third party.