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Investments (Tables)
 3 Months Ended
Mar. 31, 2013
Investments [Abstract]  
Schedule of Available-for-sale Securities Reconciliation
The amortized cost and estimated fair value of investment securities available-for-sale are as follows
(dollars in thousands, unaudited): 
   
 
 
March 31, 2013
 
 
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Government agencies
 
$
4,698
 
$
4
 
$
(18)
 
$
4,684
 
Obligations of state and
 
 
 
 
 
 
 
 
 
 
 
 
 
political subdivisions
 
 
78,445
 
 
3,241
 
 
(489)
 
 
81,197
 
U.S. Government agencies
 
 
 
 
 
 
 
 
 
 
 
 
 
collateralized by mortgage
 
 
 
 
 
 
 
 
 
 
 
 
 
obligations
 
 
308,044
 
 
3,779
 
 
(1,051)
 
 
310,772
 
Equity Securities
 
 
1,336
 
 
766
 
 
-
 
 
2,102
 
 
 
$
392,523
 
$
7,790
 
$
(1,558)
 
$
398,755
 
            
 
 
December 31, 2012
 
 
 
Amortized
Cost
 
Gross
Unrealized
Gains
 
Gross
Unrealized
Losses
 
Estimated
Fair Value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U.S. Government agencies
 
$
2,987
 
$
3
 
$
(17)
 
$
2,973
 
Obligations of state and
 
 
 
 
 
 
 
 
 
 
 
 
 
political subdivisions
 
 
70,736
 
 
3,430
 
 
(180)
 
 
73,986
 
U.S. Government agencies
 
 
 
 
 
 
 
 
 
 
 
 
 
collateralized by mortgage
 
 
 
 
 
 
 
 
 
 
 
 
 
obligations
 
 
298,806
 
 
3,547
 
 
(964)
 
 
301,389
 
Equity Securities
 
 
1,336
 
 
508
 
 
(4)
 
 
1,840
 
 
 
$
373,865
 
$
7,488
 
$
(1,165)
 
$
380,188
 
Information Pertaining to Investment Securities Aggregated by Investment Category and Length of Time that Individual Securities in a Continuous Loss Position
At March 31, 2013 and December 31, 2012, the Company had  130 securities and 89 securities, respectively, with unrealized losses. Management has evaluated those securities as of the respective dates, and does not believe that any of the associated unrealized losses are other than temporary. Information pertaining to our investment securities with unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous loss position, is disclosed in the table below.
 
Investment Portfolio - Unrealized Losses
(dollars in thousands, unaudited)
     
 
 
March 31, 2013
 
 
 
Less than Twelve Months
 
Over Twelve Months
 
 
 
Gross
Unrealized
Losses
 
Fair Value
 
Gross
Unrealized
Losses
 
Fair Value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
US Government Agencies
 
$
(18)
 
$
1,993
 
$
-
 
$
-
 
Obligations of State and Political Subdivisions
 
 
(475)
 
 
22,550
 
 
(15)
 
 
318
 
U.S. Government agencies collateralized by mortgage
 
 
 
 
 
 
 
 
 
 
 
 
 
obligations
 
 
(919)
 
 
112,437
 
 
(132)
 
 
11,942
 
Other Securities
 
 
-
 
 
-
 
 
-
 
 
-
 
Total
 
$
(1,412)
 
$
136,980
 
$
(147)
 
$
12,260
 
        
 
 
December 31, 2012
 
 
 
Less than Twelve Months
 
Over Twelve Months
 
 
 
Gross
Unrealized
Losses
 
Fair Value
 
Gross
Unrealized
Losses
 
Fair Value
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
US Government Agencies
 
$
(17)
 
$
1,996
 
$
-
 
$
-
 
Obligations of State and Political Subdivisions
 
 
(180)
 
 
9,324
 
 
-
 
 
-
 
U.S. Government agencies collateralized by mortgage
 
 
 
 
 
 
 
 
 
 
 
 
 
obligations
 
 
(903)
 
 
106,799
 
 
(61)
 
 
6,965
 
Other Securities
 
 
(4)
 
 
242
 
 
-
 
 
-
 
Total
 
$
(1,104)
 
$
118,361
 
$
(61)
 
$
6,965