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Note 4 - Debt and Equity Securities
9 Months Ended
Sep. 30, 2016
Notes to Financial Statements  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
4.
Debt and Equity Securities
 
The Company’s investments in equity securities that have readily determinable fair values and all investments in debt securities are classified in one of the following three categories and accounted for accordingly: (1) trading securities, (2) securities available for sale and (3) securities held-to-maturity.
 
The Company did not hold any trading securities at September 30, 2016 and December 31, 2015. Securities available for sale are recorded at fair value. Securities held-to-maturity are recorded at amortized cost.
 
The following table summarizes the Company’s portfolio of securities held-to-maturity at September 30, 2016:
 
    Amortized
Cost
  Fair Value   Gross
Unrealized
Gains
  Gross
Unrealized
Losses
    (In thousands)
Securites held-to-maturity:                                
Municipals   $ 33,274     $ 33,410     $ 136     $ -  
                                 
Total   $ 33,274     $ 33,410     $ 136     $ -  
 
The following table summarizes the Company’s portfolio of securities held-to-maturity at December 31, 2015:
 
    Amortized
Cost
  Fair Value   Gross
Unrealized
Gains
  Gross
Unrealized
Losses
    (In thousands)
Securites held-to-maturity:                                
Municipals   $ 6,180     $ 6,180     $ -     $ -  
                                 
Total   $ 6,180     $ 6,180     $ -     $ -  
 
The following table summarizes the Company’s portfolio of securities available for sale at September 30, 2016:
 
    Amortized
Cost
  Fair Value   Gross
Unrealized
Gains
  Gross
Unrealized
Losses
    (In thousands)    
Corporate   $ 110,000     $ 104,011     $ 191     $ 6,180  
Municipals     125,667       130,380       4,713       -  
Mutual funds     21,658       21,658       -       -  
Collateralized loan obligations     101,660       102,572       920       8  
Other     7,193       7,191       -       2  
Total other securities     366,178       365,812       5,824       6,190  
REMIC and CMO     383,912       389,426       6,144       630  
GNMA     7,520       7,700       180       -  
FNMA     129,791       132,831       3,085       45  
FHLMC     14,802       15,110       308       -  
Total mortgage-backed securities     536,025       545,067       9,717       675  
Total securities available for sale   $ 902,203     $ 910,879     $ 15,541     $ 6,865  
 
Mortgage-backed securities shown in the table above include one private issue collateralized mortgage obligation (“CMO”) that is collateralized by commercial real estate mortgages with an amortized cost and market value of $0.4 million at September 30, 2016.
 
The following table summarizes the Company’s portfolio of securities available for sale at December 31, 2015:
 
    Amortized
Cost
  Fair Value   Gross
Unrealized
Gains
  Gross
Unrealized
Losses
    (In thousands)    
Corporate   $ 115,976     $ 111,674     $ 134     $ 4,436  
Municipals     127,696       131,583       3,887       -  
Mutual funds     21,290       21,290       -       -  
Collateralized loan obligations     53,225       52,898       -       327  
Other     7,214       7,212       -       2  
Total other securities     325,401       324,657       4,021       4,765  
REMIC and CMO     469,987       469,936       3,096       3,147  
GNMA     11,635       11,798       302       139  
FNMA     170,327       170,057       1,492       1,762  
FHLMC     16,961       16,949       87       99  
Total mortgage-backed securities     668,910       668,740       4,977       5,147  
Total securities available for sale   $ 994,311     $ 993,397     $ 8,998     $ 9,912  
 
Mortgage-backed securities shown in the table above include one private issue CMO that is collateralized by commercial real estate mortgages with an amortized cost and market value of $7.7 million at December 31, 2015.
 
The following table details the amortized cost and fair value of the Company’s securities classified as held-to-maturity at September 30, 2016, by contractual maturity. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
 
    Amortized
Cost
  Fair Value
    (In thousands)
         
Due in one year or less   $ 11,370     $ 11,370  
Due after one year through five years     40       40  
Due after ten years     21,864       22,000  
                 
Total securities held-to-maturity   $ 33,274     $ 33,410  
 
The amortized cost and fair value of the Company’s securities, classified as available for sale at September 30, 2016, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
 
    Amortized
Cost
  Fair Value
    (In thousands)
         
Due in one year or less   $ -     $ -  
Due after one year through five years     1,795       1,821  
Due after five years through ten years     118,691       117,707  
Due after ten years     224,034       224,626  
                 
Total other securities     344,520       344,154  
Mutual funds     21,658       21,658  
Mortgage-backed securities     536,025       545,067  
                 
Total securities available for sale   $ 902,203     $ 910,879  
 
The following table shows the Company’s available for sale securities with gross unrealized losses and their fair value, aggregated by category and length of time that individual securities have been in a continuous unrealized loss position, at September 30, 2016:
 
        Total   Less than 12 months   12 months or more
    Count   Fair Value   Unrealized
Losses
  Fair Value   Unrealized
Losses
  Fair Value   Unrealized
Losses
        (Dollars in thousands)    
Corporate     13     $ 93,820     $ 6,180     $ 19,294     $ 706     $ 74,526     $ 5,474  
Collateralized loan obligations     1       7,474       8       -       -       7,474       8  
Other     1       299       2       -       -       299       2  
Total other securities     15       101,593       6,190       19,294       706       82,299       5,484  
                                                         
REMIC and CMO     11       55,603       630       19,707       131       35,896       499  
FNMA     1       6,694       45       -       -       6,694       45  
Total mortgage-backed securities     12       62,297       675       19,707       131       42,590       544  
Total securities available for sale     27     $ 163,890     $ 6,865     $ 39,001     $ 837     $ 124,889     $ 6,028  
 
The following table shows the Company’s available for sale securities with gross unrealized losses and their fair value, aggregated by category and length of time that individual securities have been in a continuous unrealized loss position, at December 31, 2015:
 
        Total   Less than 12 months   12 months or more
    Count   Fair Value   Unrealized
Losses
  Fair Value   Unrealized
Losses
  Fair Value   Unrealized
Losses
        (Dollars in thousands)    
Corporate     12     $ 85,563     $ 4,436     $ 76,218     $ 3,782     $ 9,345     $ 654  
Collateralized loan obligations     7       52,898       327       52,898       327       -       -  
Other     1       298       2       -       -       298       2  
Total other securities     20       138,759       4,765       129,116       4,109       9,643       656  
                                                         
REMIC and CMO     33       238,132       3,147       182,010       1,642       56,122       1,505  
GNMA     1       6,977       139       6,977       139       -       -  
FNMA     20       102,225       1,762       75,769       1,043       26,456       719  
FHLMC     3       14,715       99       14,715       99       -       -  
Total mortgage-backed securities     57       362,049       5,147       279,471       2,923       82,578       2,224  
Total securities available for sale     77     $ 500,808     $ 9,912     $ 408,587     $ 7,032     $ 92,221     $ 2,880  
 
OTTI losses on impaired securities must be fully recognized in earnings if an investor has the intent to sell the debt security or if it is more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost. However, even if an investor does not expect to sell a debt security, the investor must evaluate the expected cash flows to be received and determine if a credit loss has occurred. In the event that a credit loss has occurred, only the amount of impairment associated with the credit loss is recognized in earnings in the Consolidated Statements of Income. Amounts relating to factors other than credit losses are recorded in accumulated other comprehensive income (“AOCI”) within Stockholders’ Equity.
 
The Company reviewed each investment that had an unrealized loss at September 30, 2016 and December 31, 2015. An unrealized loss exists when the current fair value of an investment is less than its amortized cost basis. Unrealized losses on available for sale securities, that are deemed to be temporary, are recorded in AOCI, net of tax.
 
The unrealized losses in total securities available for sale at September 30, 2016 and December 31, 2015 were caused by movements in interest rates. It is not anticipated that these securities would be settled at a price that is less than the amortized cost of the Company’s investment. Each of these securities is performing according to its terms and, in the opinion of management, will continue to perform according to its terms. The Company does not have the intent to sell these securities and it is more likely than not the Company will not be required to sell the securities before recovery of the securities’ amortized cost basis. This conclusion is based upon considering the Company’s cash and working capital requirements and contractual and regulatory obligations, none of which the Company believes would cause the sale of the securities. Therefore, the Company did not consider these investments to be other-than-temporarily impaired at September 30, 2016 and December 31, 2015.
 
The Company sold available for sale securities with book values at the time of sale totaling $64.6 million and $163.0 million during the nine months ended September 30, 2016 and 2015, respectively. The Company did not sell any available for sale securities during the three months ended September 30, 2016. The Company sold available for sale securities with book values at the time of sale totaling $138.0 million during the three months ended September 30, 2015.
 
The following table represents the gross gains and gross losses realized from the sale of securities available for sale for the periods indicated:
 
    For the three months ended
September 30,
  For the nine months ended
September 30,
    2016   2015   2016   2015
    (In thousands)
Gross gains from the sale of securities   $ -     $ 2,666     $ 2,370     $ 2,899  
Gross losses from the sale of securities     -       (2,563 )     (7 )     (2,732 )
                                 
Net gains from the sale of securities   $ -     $ 103     $ 2,363     $ 167