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Investment Securities (Tables)
9 Months Ended
Sep. 30, 2014
Investment Securities [Abstract]  
Amortized cost and fair value of investment securities held to maturity
The amortized cost and fair value of investment securities held to maturity are as follows (dollars in thousands):

  
Amortized
Cost
  
Gross
Unrealized
Gains
  
Gross
Unrealized
Losses
  
Fair
Value
 
September 30, 2014:
        
 
US Treasury securities
 
$
29,162
  
$
539
  
$
30
  
$
29,671
 
US Agency securities
  
17,060
   
100
   
69
   
17,091
 
US Government sponsored mortgage-backed securities
  
16,075
   
44
   
135
   
15,984
 
Total
 
$
62,297
  
$
683
  
$
234
  
$
62,746
 
                 
December 31, 2013:
                
                 
US Treasury securities
 
$
31,235
  
$
665
  
$
69
  
$
31,831
 
US Agency securities
  
11,123
   
44
   
101
   
11,066
 
US Government sponsored mortgage-backed securities
  
2,303
   
27
   
14
   
2,316
 
Total
 
$
44,661
  
$
736
  
$
184
  
$
45,213
 
Schedule of temporary impairment losses
In addition, the Bank does not intend to sell, nor does it believe it will be more likely than not that it will be required to sell, any impaired securities prior to a recovery of amortized cost.
 
Less than 12 months
 
12 Months or More
 
Total
 
  
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
 
September 30, 2014:
(dollars in thousands)
 
       
US Treasury securities
 
$
6,950
  
$
30
  
$
-
  
$
-
  
$
6,950
  
$
30
 
US Agency securities
  
8,970
   
69
   
-
   
-
   
8,970
   
69
 
US Government sponsored mortgage-backed securities
  
13,886
   
135
   
-
   
-
   
13,886
   
135
 
Total
 
$
29,806
  
$
234
  
$
-
  
$
-
  
$
29,806
  
$
234
 
 
 
 
Less than 12 months
 
12 Months or More
 
Total
 
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
 
Fair Value
 
Unrealized Losses
 
December 31, 2013:
(dollars in thousands)
 
       
US Treasury securities
 
$
6,907
  
$
69
  
$
-
  
$
-
  
$
6,907
  
$
69
 
US Agency securities
  
7,934
   
101
   
-
   
-
   
7,934
   
101
 
US Government sponsored mortgage-backed securities
  
1,931
   
14
   
-
   
-
   
1,931
   
14
 
Total
 
$
16,772
  
$
184
  
$
-
  
$
-
  
$
16,772
  
$
184
 
Amortized cost and estimated fair value of debt securities
The amortized cost and estimated fair value of debt securities at September 30, 2014, by contractual maturity are shown in the following table.  Actual maturities may differ from contractual maturities, because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

  
Held to Maturity
(dollars in thousands)
 
  
Amortized Cost
  
Estimated Fair Value
 
     
Due in one year or less
 
$
6,002
  
$
6,054
 
Due from one year to five years
  
35,334
   
35,618
 
Due from five years to ten years
  
4,886
   
5,090
 
US Government sponsored mortgage-backed securities
  
16,075
   
15,984
 
  
$
62,297
  
$
62,746