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2. Investment Securities (Tables)
12 Months Ended
Dec. 31, 2016
Investment Securities Tables  
Investment securities available for sale

(Dollars in thousands)                      
    December 31, 2016      
   

Amortized

Cost

   

Gross

Unrealized

Gains

   

Gross

 Unrealized

Losses

   

Estimated

Fair Value

Mortgage-backed securities   $ 66,654       1,221       290       67,585
U.S. Government                              
sponsored enterprises     38,188       308       274       38,222
State and political subdivisions     137,832       4,176       152       141,856
Corporate bonds     1,500       33       -       1,533
Trust preferred securities     750       -       -       750
Total   $ 244,924       5,738       716       249,946
                               
(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

 

Current fair value and associated unrealized losses on investments in debt securities with unrealized losses

(Dollars in thousands)                                  
    December 31, 2016               
    Less than 12 Months     12 Months or More     Total   
    Fair Value    

Unrealized

Losses

    Fair Value    

Unrealized

 Losses

    Fair Value    

Unrealized

Losses

Mortgage-backed securities   $ 15,594       290       -       -       15,594       290
U.S. Government                                              
sponsored enterprises     10,120       94       9,562       180       19,682       274
State and political subdivisions     10,441       123       561       29       11,002       152
Total   $ 36,155       507       10,123       209       46,278       716
                                               
(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

 

Amortized cost and estimated fair value of investment securities available for sale by contractual maturity
December 31, 2016          
(Dollars in thousands)          
   

Amortized

Cost

   

Estimated

Fair Value

Due within one year   $ 7,304       7,341
Due from one to five years     81,366       84,100
Due from five to ten years     77,498       78,751
Due after ten years     12,102       12,169
Mortgage-backed securities     66,654       67,585
Equity securities     -       -
Total   $ 244,924       249,946
Available for sale securities measured at fair value on a recurring basis

(Dollars in thousands)                      
    December 31, 2016         
    Fair Value Measurements    

Level 1

Valuation

   

Level 2

Valuation

   

Level 3

Valuation

Mortgage-backed securities   $ 67,585       -       67,585       -
U.S. Government                              
sponsored enterprises   $ 38,222       -       38,222       -
State and political subdivisions   $ 141,856       -       141,856       -
Corporate bonds   $ 1,533       -       1,533       -
Trust preferred securities   $ 750       -       -       750

 

(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       -       -

 

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   $ -