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Securities
9 Months Ended
Sep. 30, 2011
Securities [Abstract]  
Securities
5. 
Securities - (2011 Restated)

The amortized cost and estimated market value of investment and mortgage-backed securities as of September 30, 2011 and December 31, 2010, are reflected in the tables below (in thousands):
 
 
September 30, 2011
 
     
Gross
 
Gross Unrealized Losses
   
 
Amortized
 
Unrealized
 
Noncredit
    Estimated 
AVAILABLE FOR SALE:
Cost
 
Gains
 
OTTI
  Other Fair Value 
Investment Securities:
               
State and Political Subdivisions
 $275,170  $28,906  $-  $29  $304,047 
Other Stocks and Bonds
  2,925   -   1,978   -   947 
Mortgage-backed Securities:
                    
U.S. Government Agencies
  115,394   6,996   -   98   122,292 
Government-Sponsored Enterprises
  574,232   19,551   -   883   592,900 
Total
 $967,721  $55,453  $1,978  $1,010  $1,020,186 
 
 
September 30, 2011
 
     
Gross
 
Gross Unrealized Losses
   
 
Amortized
 
Unrealized
 
Noncredit
    
Estimated
 
HELD TO MATURITY:
Cost
 
Gains
 
OTTI
  Other 
Fair Value
 
Investment Securities:
               
State and Political Subdivisions
 $1,011  $188  $-  $-  $1,199 
Other Stocks and Bonds
  485   18   -   -   503 
Mortgage-backed Securities:
                    
U.S. Government Agencies
  23,556   1,124   -   75   24,605 
Government-Sponsored Enterprises
  355,780   13,546   -   10   369,316 
Total
 $380,832  $14,876  $-  $85  $395,623 
 
   
December 31, 2010
 
      
Gross
  
Gross Unrealized Losses
    
   
Amortized
  
Unrealized
  
Noncredit
     
Estimated
 
AVAILABLE FOR SALE:
 
Cost
  
Gains
  
OTTI
  Other  
Fair Value
 
Investment Securities:
               
U.S. Treasury
 $4,700  $-  $-  $-  $4,700 
State and Political Subdivisions
  296,357   4,445   -   6,540   294,262 
Other Stocks and Bonds
  3,117   1   2,736   -   382 
Mortgage-backed Securities:
                    
U.S. Government Agencies
  145,136   5,296   -   159   150,273 
Government-Sponsored Enterprises
  721,908   16,035   -   1,642   736,301 
Total
 $1,171,218  $25,777  $2,736  $8,341  $1,185,918 
 
  December 31, 2010 
     
Gross
 
Gross Unrealized Losses
   
 
Amortized
 
Unrealized
 
Noncredit
    
Estimated
 
HELD TO MATURITY: Cost  Gains  OTTI  Other  Fair Value 
Investment Securities:
               
State and Political Subdivisions
 $1,012  $44  $-  $-  $1,056 
Other Stocks and Bonds
  483   14   -   -   497 
Mortgage-backed Securities:
          -         
U.S. Government Agencies
  20,821   566   -   55   21,332 
Government-Sponsored Enterprises
  384,546   8,576   -   589   392,533 
Total
 $406,862  $9,200  $-  $644  $415,418 

Securities carried at fair value through income were as follows (in thousands):

   
At September 30,
  
At December 31,
 
   
2011
  
2010
 
Mortgage-backed Securities:
      
U.S. Government Agencies
 $31,441  $5,392 
Government-Sponsored Enterprises
  536,198   66,784 
Total
 $567,639  $72,176 

Net gains and losses on securities carried at fair value through income were as follows (in thousands):

   
Nine Months Ended September 30,
 
   
2011
   
2010
 
Net gain on sales transactions
 $592  $- 
Net mark-to-market gains (losses)
  7,357   - 
Net gain on securities carried at fair value through income
 $7,949  $- 
 
   
Three Months Ended September 30,
 
   
2011
   
2010
 
Net gain on sales transactions
 $254  $- 
Net mark-to-market gains (losses)
  3,274   - 
Net gain on securities carried at fair value through income
 $3,528  $- 

The following table represents the unrealized loss on securities for the nine months ended September 30, 2011 and year ended December 31, 2010 (in thousands):

 
Less Than 12 Months
 
More Than 12 Months
 
Total
 
     
Unrealized
    
Unrealized
    
Unrealized
 
 
Fair Value
 
Loss
 
Fair Value
 
Loss
 
Fair Value
 
Loss
 
As of September 30, 2011:
            
              
Available for Sale
            
State and Political Subdivisions
 $925  $12  $293  $17  $1,218  $29 
Other Stocks and Bonds
  -   -   947   1,978   947   1,978 
Mortgage-Backed Securities
  117,436   921   4,613   60   122,049   981 
Total
 $118,361  $933  $5,853  $2,055  $124,214  $2,988 
                          
Held to Maturity
                        
Mortgage-Backed Securities
 $8,661  $85  $-  $-  $8,661  $85 
Total
 $8,661  $85  $-  $-  $8,661  $85 
                          
As of December 31, 2010:
                        
                          
Available for Sale
                        
State and Political Subdivisions
 $136,671  $6,501  $270  $39  $136,941  $6,540 
Other Stocks and Bonds
  -   -   189   2,736   189   2,736 
Mortgage-Backed Securities
  267,014   1,712   12,184   89   279,198   1,801 
Total
 $403,685  $8,213  $12,643  $2,864  $416,328  $11,077 
                          
Held to Maturity
                        
Mortgage-Backed Securities
 $52,676  $644  $-  $-  $52,676  $644 
Total
 $52,676  $644  $-  $-  $52,676  $644 

When it is determined that a decline in fair value of Held to Maturity ("HTM") and Available for Sale ("AFS") securities is other-than-temporary, the carrying value of the security is reduced to its estimated fair value, with a corresponding charge to earnings for the credit portion and the noncredit portion to other comprehensive income.  In estimating other-than-temporary impairment losses, management considers, among other things, the length of time and the extent to which the fair value has been less than cost and the financial condition and near-term prospects of the issuer.  Additionally, we do not currently intend to sell the securities and it is not more likely than not that we will be required to sell the security before the anticipated recovery of its amortized cost basis.
 
The turmoil in the capital markets had a significant impact on our estimate of fair value for certain of our securities.  We believe the market values are reflective of illiquidity and credit impairment.  At September 30, 2011, we have in AFS Other Stocks and Bonds, $2.9 million amortized cost basis in pooled trust preferred securities ("TRUPs").  Those securities are structured products with cash flows dependent upon securities issued by U.S. financial institutions, including banks and insurance companies.  Our estimate of fair value at September 30, 2011 for the TRUPs is approximately $947,000 and reflects the market illiquidity.  With the exception of the TRUPs, to the best of management's knowledge and based on our consideration of the qualitative factors associated with each security, there were no securities in our investment and mortgage-backed securities portfolio at September 30, 2011 with an other-than-temporary impairment.

Given the facts and circumstances associated with the TRUPs we performed detailed cash flow modeling for each TRUP using an industry-accepted cash flow model. Prior to loading the required assumptions into the model we reviewed the financial condition of each of the underlying issuing banks within the TRUP collateral pool that had not deferred or defaulted as of September 30, 2011.  Management's best estimate of a deferral assumption was assigned to each issuing bank based on the category in which it fell.  Our analysis of the underlying cash flows contemplated various default, deferral and recovery scenarios to arrive at our best estimate of cash flows.  Based on that detailed analysis, we have concluded that the other-than-temporary impairment, which captures the credit component in compliance with FASB ASC Topic 320, "Investments - Debt and Equity Securities," was estimated at $3.1 million at both September 30, 2011 and December 31, 2010. The noncredit charge to other comprehensive income was estimated at $2.0 million and $2.7 million at September 30, 2011 and December 31, 2010, respectively.  The carrying amount of the TRUPs was written down with $75,000 and $3.0 million recognized in earnings for the nine months ended September 30, 2010 and for the year ended December 31, 2009, respectively.  There was no additional write-down of the TRUPs recognized in earnings for the nine months ended September 30, 2011.  The cash flow model assumptions represent management's best estimate and consider a variety of qualitative factors, which include, among others, the credit rating downgrades, the severity and duration of the mark-to-market loss, and the structural nuances of each TRUP.  Management believes that the detailed review of the collateral and cash flow modeling support the conclusion that the TRUPs had an other-than-temporary impairment at September 30, 2011.  We will continue to update our assumptions and the resulting analysis each reporting period to reflect changing market conditions.  Additionally, we do not currently intend to sell the TRUPs and it is not more likely than not that we will be required to sell the TRUPs before the anticipated recovery of their amortized cost basis.

The table below provides more detail on the TRUPs at September 30, 2011 (in thousands).

TRUP
 
Par
  
Credit
Loss
  
Amortized
Cost
  
Fair
Value
  
Tranche
  
Credit
Rating
 
                    
1
 $2,000  $1,075  $925  $300   C1  
Ca
 
2
  2,000   550   1,450   348   B1  C 
3
  2,000   1,450   550   299   B2  C 
   $6,000  $3,075  $2,925  $947        

The following table presents the impairment activity related to credit loss, which is recognized in earnings, and the impairment activity related to all other factors, which are recognized in other comprehensive income (in thousands).

   
Nine Months Ended September 30, 2011
 
   
Impairment
Related to
Credit Loss
  
Impairment
Related to All
Other Factors
  
Total
Impairment
 
           
Balance, beginning of the period
 $3,075  $2,694  $5,769 
Charges on securities for which other-than-temporary impairment charges were not previously recognized
  -   -   - 
Additional charges on securities for which other-than-temporary impairment charges were previously recognized
  -   -   - 
Balance, end of the period
 $3,075  $2,694  $5,769 
 
   
Three Months Ended September 30, 2011
 
   
Impairment
Related to
Credit Loss
  
Impairment
Related to All
Other Factors
  
Total
Impairment
 
           
Balance, beginning of the period
 $3,075  $2,694  $5,769 
Charges on securities for which other-than-temporary impairment charges were not previously recognized
  -   -   - 
Additional charges on securities for which other-than-temporary impairment charges were previously recognized
  -   -   - 
Balance, end of the period
 $3,075  $2,694  $5,769 
 
Interest income recognized on securities for the periods presented (in thousands):
 
   
Nine Months Ended
 
   
September 30,
2011
  
September 30,
2010
 
U.S. Treasury
 $6  $7 
State and Political Subdivisions
  9,525   8,239 
Other Stocks and Bonds
  25   35 
Mortgage-backed Securities
  37,899   37,937 
Total interest income on securities
 $47,455  $46,218 
 
   
Three Months Ended
 
   
September 30,
2011
  
September 30,
2010
 
U.S. Treasury
 $-  $3 
State and Political Subdivisions
  3,073   2,375 
Other Stocks and Bonds
  7   8 
Mortgage-backed Securities
  13,292   13,378 
Total interest income on securities
 $16,372  $15,764 

There were no securities transferred from AFS to HTM during the nine months ended September 30, 2011 or 2010.  There were no sales from the HTM portfolio during the nine months ended September 30, 2011 or 2010.  There were $380.8 million of securities classified as HTM at September 30, 2011 compared to $406.9 million of securities classified as HTM at December 31, 2010.

Of the $9.1 million in net securities gains from the AFS portfolio for the nine months ended September 30, 2011, there were $9.2 million in realized gains and $121,000 in realized losses.  Of the $23.0 million in net securities gains from the AFS portfolio for the nine months ended September 30, 2010, there were $25.5 million in realized gains and $2.5 million in realized losses.

The amortized cost and fair value of securities at September 30, 2011 are presented below by contractual maturity.  Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations.  Mortgage-backed securities are presented in total by category due to the fact that mortgage-backed securities typically are issued with stated principal amounts, and the securities are backed by pools of mortgages that have loans with varying maturities.  The characteristics of the underlying pool of mortgages, such as fixed-rate or adjustable-rate, as well as prepayment risk, are passed on to the certificate holder.  The term of a mortgage-backed pass-through security thus approximates the term of the underlying mortgages and can vary significantly due to prepayments.

   
September 30, 2011
 
   
Amortized Cost
  
Fair Value
 
Available for sale securities:
 
(in thousands)
 
        
Investment Securities
      
Due in one year or less
 $1,968  $1,989 
Due after one year through five years
  6,929   7,196 
Due after five years through ten years
  27,988   30,455 
Due after ten years
  241,210   265,354 
    278,095   304,994 
Mortgage-backed securities
  689,626   715,192 
Total
 $967,721  $1,020,186 
 
   
September 30, 2011
 
   
Amortized Cost
  
Fair Value
 
Held to maturity securities:
 
(in thousands)
 
        
Investment Securities
      
Due in one year or less
 $-  $- 
Due after one year through five years
  -   - 
Due after five years through ten years
  485   503 
Due after ten years
  1,011   1,199 
    1,496   1,702 
Mortgage-backed securities
  379,336   393,921 
Total
 $380,832  $395,623 

Investment and mortgage-backed securities with book values of $1.00 billion at September 30, 2011 and $977.4 million at December 31, 2010 were pledged to collateralize Federal Home Loan Bank ("FHLB") advances, repurchase agreements, public funds and trust deposits or for other purposes as required by law.

Securities with limited marketability, such as FHLB stock and other investments, are carried at cost, which approximates its fair value and assessed for other-than-temporary impairment.  These securities have no maturity date.