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Securities (Tables)
3 Months Ended
Mar. 31, 2019
Securities [Abstract]  
Book values and approximate fair values of investment securities

The book values and approximate fair values of investment securities at March 31, 2019 and December 31, 2018 are summarized as follows:

 

   March 31, 2019   December 31, 2018 
   Amortized   Fair   Unrealized   Amortized   Fair   Unrealized 
($ in thousands)  Cost   Value   Gains   (Losses)   Cost   Value   Gains   (Losses) 
                                 
Securities available for sale:                                        
  Government-sponsored enterprise securities  $78,995    78,887    84    (192)   82,995    82,662    63    (396)
  Mortgage-backed securities   533,360    526,948    1,089    (7,501)   396,995    385,551    39    (11,483)
  Corporate bonds   33,741    33,774    203    (170)   33,751    33,138    76    (689)
Total available for sale  $646,096    639,609    1,376    (7,863)   513,741    501,351    178    (12,568)
                                         
Securities held to maturity:                                        
  Mortgage-backed securities  $49,361    48,291        (1,070)   52,048    50,241        (1,807)
  State and local governments   41,542    41,989    465    (18)   49,189    49,665    525    (49)
Total held to maturity  $90,903    90,280    465    (1,088)   101,237    99,906    525    (1,856)
Schedule of information regarding securities with unrealized losses

The following table presents information regarding securities with unrealized losses at March 31, 2019:

 

($ in thousands)  Securities in an Unrealized
Loss Position for
Less than 12 Months
   Securities in an Unrealized
Loss Position for
More than 12 Months
   Total 
   Fair Value   Unrealized
Losses
   Fair Value   Unrealized
Losses
   Fair Value   Unrealized
Losses
 
Government-sponsored enterprise securities  $        18,808    192    18,808    192 
Mortgage-backed securities   70,478    346    298,133    8,225    368,611    8,571 
Corporate bonds   2,480    60    9,049    110    11,529    170 
State and local governments           5,823    18    5,823    18 
      Total temporarily impaired securities  $72,958    406    331,813    8,545    404,771    8,951 

 

 

The following table presents information regarding securities with unrealized losses at December 31, 2018:

 

($ in thousands)  Securities in an Unrealized
Loss Position for
Less than 12 Months
   Securities in an Unrealized
Loss Position for
More than 12 Months
   Total 
   Fair Value   Unrealized
Losses
   Fair Value   Unrealized
Losses
   Fair Value   Unrealized
Losses
 
Government-sponsored enterprise securities  $4,921    78    13,682    318    18,603    396 
Mortgage-backed securities   82,525    351    294,305    12,939    376,830    13,290 
Corporate bonds   20,704    433    5,817    256    26,521    689 
State and local governments   595    1    6,641    48    7,236    49 
      Total temporarily impaired securities  $108,745    863    320,445    13,561    429,190    14,424 
                               

 

Schedule of book values and approximate fair values of investment securities by contractual maturity

The book values and approximate fair values of investment securities at March 31, 2019, by contractual maturity, are summarized in the table below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

 

   Securities Available for Sale   Securities Held to Maturity 
   Amortized   Fair   Amortized   Fair 
($ in thousands)  Cost   Value   Cost   Value 
                 
Securities                    
Due within one year  $        865    868 
Due after one year but within five years   105,196    105,195    26,571    26,860 
Due after five years but within ten years   2,540    2,480    12,427    12,559 
Due after ten years   5,000    4,986    1,679    1,702 
Mortgage-backed securities   533,360    526,948    49,361    48,291 
Total securities  $646,096    639,609    90,903    90,280