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Securities (Tables)
12 Months Ended
Dec. 31, 2012
Securities [Abstract]  
Fair value of securities
                                 
December 31, 2012   Amortized
Cost
    Gross
Unrealized
Gains
    Gross
Unrealized
Losses
    Fair
Value
 

Available for sale

                               

U.S. Treasury and federal agencies

  $ 51,458     $ 351     $ (30   $ 51,779  

State and municipal

    162,147       10,842       (84     172,905  

Federal agency collateralized mortgage obligations

    95,337       1,533       (39     96,831  

Federal agency mortgage-backed pools

    152,372       6,847       (15     159,204  

Private labeled mortgage-backed pools

    1,960       71       —         2,031  

Corporate notes

    32       19       —         51  
   

 

 

   

 

 

   

 

 

   

 

 

 

Total available for sale investment securities

  $ 463,306     $ 19,663     $ (168   $ 482,801  
   

 

 

   

 

 

   

 

 

   

 

 

 
         
December 31, 2011   Amortized
Cost
    Gross
Unrealized
Gains
    Gross
Unrealized
Losses
    Fair
Value
 

Available for sale

                               

U.S. Treasury and federal agencies

  $ 12,693     $ 329     $ —       $ 13,022  

State and municipal

    135,011       8,950       (71     143,890  

Federal agency collateralized mortgage obligations

    89,016       2,106       —         91,122  

Federal agency mortgage-backed pools

    173,797       5,669       (115     179,351  

Private labeled mortgage-backed pools

    3,518       118       —         3,636  

Corporate notes

    32       —         (8     24  
   

 

 

   

 

 

   

 

 

   

 

 

 

Total available for sale investment securities

  $ 414,067     $ 17,172     $ (194   $ 431,045  
   

 

 

   

 

 

   

 

 

   

 

 

 

Held to maturity, State and Municipal

  $ 7,100     $ 34     $ —       $ 7,134  
   

 

 

   

 

 

   

 

 

   

 

 

 
Amortized cost and fair value of securities available for sale and held to maturity
                                 
    December 31, 2012     December 31, 2011  
    Amortized
Cost
    Fair
Value
    Amortized
Cost
    Fair
Value
 

Available for sale

                               

Within one year

  $ 4,358     $ 4,368     $ 931     $ 940  

One to five years

    49,415       50,673       30,796       31,910  

Five to ten years

    98,551       104,258       51,476       55,053  

After ten years

    61,313       65,436       64,533       69,033  
   

 

 

   

 

 

   

 

 

   

 

 

 
      213,637       224,735       147,736       156,936  

Federal agency collateralized mortgage obligations

    95,337       96,831       89,016       91,122  

Federal agency mortgage-backed pools

    152,372       159,203       173,797       179,351  

Private labeled mortgage-backed pools

    1,960       2,032       3,518       3,636  
   

 

 

   

 

 

   

 

 

   

 

 

 

Total available for sale investment securities

  $ 463,306     $ 482,801     $ 414,067     $ 431,045  

Held to maturity

                               

Within one year

  $ —       $ —       $ 7,100     $ 7,134  

One to five years

    —         —         —         —    
   

 

 

   

 

 

   

 

 

   

 

 

 

Total held to maturity investment securities

  $ —       $ —       $ 7,100     $ 7,134  
   

 

 

   

 

 

   

 

 

   

 

 

 
Gross unrealized losses and the fair value of the Company's investments
                                                 
    Less than 12 Months     12 Months or More     Total  

December 31, 2012

  Fair
Value
    Unrealized
Losses
    Fair
Value
    Unrealized
Losses
    Fair
Value
    Unrealized
Losses
 

U.S. Treasury and federal agencies

  $ 13,064     $ (30   $ —       $ —       $ 13,064     $ (30

State and municipal

    11,928       (84     —         —         11,928       (84

Federal agency collateralized mortgage obligations

    12,719       (39     —         —         12,719       (39

Federal agency mortgage-backed pools

    4,126       (15     —         —         4,126       (15
   

 

 

   

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 

Total temporarily impaired securities

  $ 41,837     $ (168   $ —       $ —       $ 41,837     $ (168
   

 

 

   

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 
       
    Less than 12 Months     12 Months or More     Total  

December 31, 2011

  Fair
Value
    Unrealized
Losses
    Fair
Value
    Unrealized
Losses
    Fair
Value
    Unrealized
Losses
 

State and municipal

  $ 1,550     $ (44   $ 1,948     $ (27   $ 3,498     $ (71

Federal agency mortgage-backed pools

    23,442       (115     23       —         23,465       (115

Corporate notes

    24       (8     —         —         24       (8
   

 

 

   

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 

Total temporarily impaired securities

  $ 25,016     $ (167   $ 1,971     $ (27   $ 26,987     $ (194
   

 

 

   

 

 

   

 

 

   

 

 

   

 

 

   

 

 

 
Sales of securities available for sale
                         
    Years ended December 31  
    2012     2011     2010  

Sales of securities available for sale

                       

Proceeds

  $ 14,989     $ 77,379     $ 85,892  

Gross gains

    2       1,777       675  

Gross losses

    —         —         142