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2. Investment Securities (Tables)
12 Months Ended
Dec. 31, 2015
Investment Securities Tables  
Investment securities available for sale
(Dollars in thousands)                      
    December 31, 2015     
   

Amortized

 Cost

   

Gross

Unrealized

Gains

   

Gross

Unrealized Losses

   

Estimated

Fair Value

Mortgage-backed securities   $ 76,406       1,526       45       77,887
U.S. Government                              
sponsored enterprises     38,173       399       155       38,417
State and political subdivisions     141,500       6,817       72       148,245
Corporate bonds     1,928       -       22       1,906
Trust preferred securities     750       -       -       750
Equity securities     748       577       -       1,325
Total   $ 259,505       9,319       294       268,530
                               
(Dollars in thousands)                              
    December 31, 2014         
   

Amortized

Cost

   

Gross

Unrealized

Gains

   

Gross

Unrealized

Losses

   

Estimated

Fair Value

Mortgage-backed securities   $ 88,496       1,766       52       90,210
U.S. Government                              
sponsored enterprises     33,766       418       136       34,048
State and political subdivisions     145,938       6,534       226       152,246
Corporate bonds     2,469       16       18       2,467
Trust preferred securities     750       -       -       750
Equity securities     748       630       -       1,378
Total   $ 272,167       9,364       432       281,099
Current fair value and associated unrealized losses on investments in debt securities with unrealized losses
(Dollars in thousands)                                  
    December 31, 2015         
    Less than 12 Months     12 Months or More     Total   
    Fair Value    

Unrealized

Losses

    Fair Value    

Unrealized

Losses

    Fair Value    

Unrealized

Losses

Mortgage-backed securities   $ 7,891       45       -       -       7,891       45
U.S. Government                                              
sponsored enterprises     3,074       13       10,828       142       13,902       155
State and political subdivisions     2,198       4       3,930       68       6,128       72
Corporate bonds     1,500       22       -       -       1,500       22
Total   $ 14,663       84       14,758       210       29,421       294
                                               
(Dollars in thousands)                                              
    December 31, 2014                 
    Less than 12 Months     12 Months or More     Total     
    Fair Value    

Unrealized

Losses

    Fair Value    

Unrealized

Losses

    Fair Value    

Unrealized

Losses

Mortgage-backed securities   $ 436       1       2,963       51       3,399       52
U.S. Government                                              
sponsored enterprises     2,996       4       9,850       132       12,846       136
State and political subdivisions     567       1       14,998       225       15,565       226
Corporate bonds     -       -       525       18       525       18
Total   $ 3,999       6       28,336       426       32,335       432
Amortized cost and estimated fair value of investment securities available for sale by contractual maturity
December 31, 2015          
(Dollars in thousands)          
   

Amortized

Cost

   

Estimated

Fair Value

Due within one year   $ 3,666       3,647
Due from one to five years     57,322       60,001
Due from five to ten years     106,136       109,829
Due after ten years     15,227       15,841
Mortgage-backed securities     76,406       77,887
Equity securities     748       1,325
Total   $ 259,505       268,530
Available for sale securities measured at fair value on a recurring basis
(Dollars in thousands)                      
    December 31, 2015      
   

Fair Value

Measurements

   

Level 1

Valuation

   

Level 2

Valuation

   

Level 3

Valuation

Mortgage-backed securities   $ 77,887       -       77,887       -
U.S. Government                              
sponsored enterprises   $ 38,417       -       38,417       -
State and political subdivisions   $ 148,245       -       148,245       -
Corporate bonds   $ 1,906       -       1,906       -
Trust preferred securities   $ 750       -       -       750
Equity securities   $ 1,325       1,325       -       -

 

 

(Dollars in thousands)                      
    December 31, 2014      
   

Fair Value

Measurements

   

Level 1

Valuation

   

Level 2

Valuation

   

Level 3

Valuation

Mortgage-backed securities   $ 90,210       -       90,210       -
U.S. Government                              
sponsored enterprises   $ 34,048       -       34,048       -
State and political subdivisions   $ 152,246       -       152,246       -
Corporate bonds   $ 2,467       -       2,467       -
Trust preferred securities   $ 750       -       -       750
Equity securities   $ 1,378       1,378       -       -
Fair value measurements of investment securities available for sale using Level 3 significant unobservable inputs
(Dollars in thousands)    
   

Investment Securities

Available for Sale

    Level 3 Valuation
Balance, beginning of period   $ 750
Change in book value     -
Change in gain/(loss) realized and unrealized     -
Purchases/(sales and calls)     -
Transfers in and/or (out) of Level 3     -
Balance, end of period   $ 750
       
Change in unrealized gain/(loss) for assets still held in Level 3   $ -