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Disclosures about fair value of assets and liabilities (Tables)
12 Months Ended
Dec. 31, 2016
Text Block [Abstract]  
Fair Value Measurements of Assets and Liabilities Recognized on a Recurring Basis

The following table presents the fair value measurements of assets and liabilities recognized in the accompanying financial statements measured at fair value on a recurring basis and the level within the FASB ASC fair value hierarchy in which the fair value measurements fall at the following:

 

     Fair Value      Quoted Prices in
Active Markets
for Identical
Assets

(Level 1)
     Significant
Other
Observable
Inputs
(Level 2)
     Significant
Unobservable
Inputs

(Level 3)
 

December 31, 2016

           

Available-for-sale securities

           

U.S. Treasury and federal agencies

   $ 7,989      $ —        $ 7,989      $ —    

State and municipal

     116,592        —          116,592        —    

Federal agency collateralized mortgage obligations

     137,195        —          137,195        —    

Federal agency mortgage-backed pools

     176,726        —          176,726        —    

Corporate notes

     1,329        —          1,329        —    
  

 

 

    

 

 

    

 

 

    

 

 

 

Total available-for-sale securities

     439,831        —          439,831        —    

Hedged loans

     122,345        —          122,345        —    

Forward sale commitments

     602        —          602        —    

Interest rate swap agreements

     (3,138      —          (3,138      —    

Commitments to originate loans

     (22      —          (22      —    

December 31, 2015

           

Available-for-sale securities

           

U.S. Treasury and federal agencies

   $ 5,926      $ —        $ 5,926      $ —    

State and municipal

     75,095        —          75,095        —    

Federal agency collateralized mortgage obligations

     156,203        —          156,203        —    

Federal agency mortgage-backed pools

     207,704        —          207,704        —    

Corporate notes

     54        —          54        —    
  

 

 

    

 

 

    

 

 

    

 

 

 

Total available-for-sale securities

     444,982        —          444,982        —    

Hedged loans

     115,472        —          115,472        —    

Forward sale commitments

     642        —          642        —    

Interest rate swap agreements

     (4,923      —          (4,923      —    
Realized Gains and Losses Included in Net Income for Periods in Consolidated Statements of Income

Realized gains and losses included in net income for the periods are reported in the consolidated statements of income as follows:

 

Non Interest Income Total gains and losses from:    Years Ended December 31  
   2016      2015      2014  

Hedged loans

   $ (1,776    $ 574      $ 1,261  

Fair value interest rate swap agreements

     1,776        (574      (1,261

Derivative loan commitments

     (62      195        256  
  

 

 

    

 

 

    

 

 

 
   $ (62    $ 195      $ 256  
  

 

 

    

 

 

    

 

 

 
Other Assets Measured at Fair Value on Nonrecurring Basis

Certain other assets are measured at fair value on a nonrecurring basis in the ordinary course of business and are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment):

 

     Fair Value      Quoted Prices in
Active Markets
for Identical
Assets

(Level 1)
     Significant
Other
Observable
Inputs
(Level 2)
     Significant
Unobservable
Inputs

(Level 3)
 

December 31, 2016

           

Impaired loans

   $ 2,246      $ —        $ —        $ 2,246  

Mortgage servicing rights

     11,174        —          —          11,174  

December 31, 2015

           

Impaired loans

   $ 6,803      $ —        $ —        $ 6,803  

Mortgage servicing rights

     8,874        —          —          8,874  
Qualitative Information About Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements, Other than Goodwill

The following table presents qualitative information about unobservable inputs used in recurring and nonrecurring Level 3 fair value measurements, other than goodwill, at December 31, 2016 and 2015.

 

     Fair Value at
December 31, 2016
    

Valuation

Technique

  

Unobservable Inputs

   Range (Weighted
Average)

Impaired loans

   $ 2,246      Collateral based measurement    Discount to reflect current market conditions and ultimate collectability    10% - 16% (13%)

Mortgage servicing rights

   $ 11,174      Discounted cashflows    Discount rate, Constant prepayment rate, Probability of default    10% - 16% (13%),
4% - 7% (4.6%),
1% - 10%  (4.5%)
     Fair Value at
December 31, 2015
    

Valuation

Technique

  

Unobservable Inputs

   Range (Weighted
Average)

Impaired loans

   $ 6,803      Collateral based measurement    Discount to reflect current market conditions and ultimate collectability    10% - 15% (12%)

Mortgage servicing rights

   $ 8,874      Discounted cashflows    Discount rate, Constant prepayment rate, Probability of default    10% - 15% (12%),
4% - 7% (4.6%),
1% - 10% (4.5%)