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Note 3 - Securities
 12 Months Ended
Dec. 31, 2013
Investments, Debt and Equity Securities [Abstract]  
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

Note 3: Securities


The amortized cost and fair value of securities available for sale, with gross unrealized gains and losses, follows:


   

December 31, 2013

 

Available for sale:

 

Amortized

Cost

   

Gross

Unrealized

Gains

   

Gross

Unrealized

Losses

   

Fair Value

 

U.S. Government agencies and corporations

    169,818       199       22,163       147,854  

States and political subdivisions

    22,830       746       120       23,456  

Mortgage-backed securities

    2,627       213       ---       2,840  

Corporate debt securities

    7,804       97       506       7,395  

Other securities

    2,145       ---       22       2,123  

Total securities available for sale

  $ 205,224     $ 1,255     $ 22,811     $ 183,668  

   

December 31, 2012

 

Available for sale:

 

Amortized

Cost

   

Gross

Unrealized

Gains

   

Gross

Unrealized

Losses

   

Fair Value

 

U.S. Treasury

  $ 2,005     $ 68     $ ---     $ 2,073  

U.S. Government agencies and corporations

    128,805       1,381       622       129,564  

States and political subdivisions

    35,029       1,753       3       36,779  

Mortgage-backed securities

    4,202       367       ---       4,569  

Corporate debt securities

    14,207       368       ---       14,575  

Other securities

    2,419       9       173       2,255  

Total securities available for sale

  $ 186,667     $ 3,946     $ 798     $ 189,815  

The amortized cost and fair value of single maturity securities available for sale at December 31, 2013, 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. Mortgage-backed securities included in these totals are categorized by final maturity at December 31, 2013.


   

December 31, 2013

 
   

Amortized Cost

   

Fair Value

 

Due in one year or less

  $ 3,744     $ 3,821  

Due after one year through five years

    9,910       10,262  

Due after five years through ten years

    25,070       23,707  

Due after ten years

    164,355       143,755  

No maturity

    2,145       2,123  
    $ 205,224     $ 183,668  

The Company holds restricted stock with the Federal Home Loan Bank and the Federal Reserve. Required ownership amounts are determined by the correspondent banks and the Company purchases stock from or sells stock back to the correspondents based on their calculations. The stock is held by member institutions only and is not actively traded. The Company held restricted stock of $1,414 as of December 31, 2013 and $1,689 as of December 31, 2012.


The amortized cost and fair value of securities held to maturity, with gross unrealized gains and losses, follows:


   

December 31, 2013

 

Held to maturity:

 

Amortized

Cost

   

Gross

Unrealized

Gains

   

Gross

Unrealized

Losses

   

Fair Value

 

U.S. Government agencies and corporations

  $ 13,973     $ 280     $ 1,448     $ 12,805  

States and political subdivisions

    149,490       2,971       6,502       145,959  

Mortgage-backed securities

    520       53       ---       573  

Total securities held to maturity

  $ 163,983     $ 3,304     $ 7,950     $ 159,337  

   

December 31, 2012

 

Held to maturity:

 

Amortized

Cost

   

Gross

Unrealized

Gains

   

Gross

Unrealized

Losses

   

Fair Value

 

U.S. Government agencies and corporations

  $ 7,988     $ 563     $ ---     $ 8,551  

States and political subdivisions

    151,209       9,880       216       160,873  

Mortgage-backed securities

    691       73       ---       764  

Corporate debt securities

    651       7       ---       658  

Total securities held to maturity

  $ 160,539     $ 10,523     $ 216     $ 170,846  

The amortized cost and fair value of single maturity securities held to maturity at December 31, 2013, 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. Mortgage-backed securities included in these totals are categorized by final maturity at December 31, 2013.


   

December 31, 2013

 
   

Amortized
Cost

   

Fair
Value

 

Due in one year or less

  $ 5,065     $ 5,136  

Due after one year through five years

    3,130       3,176  

Due after five years through ten years

    17,317       18,151  

Due after ten years

    138,471       132,874  
    $ 163,983     $ 159,337  

Information pertaining to securities with gross unrealized losses at December 31, 2013 and 2012 aggregated by investment category and length of time that individual securities have been in a continuous loss position, follows:


   

December 31, 2013

 
   

Less Than 12 Months

   

12 Months or More

 
   

Fair
Value

   

Unrealized
Loss

   

Fair
Value

   

Unrealized
Loss

 

U. S. Government agencies and corporations

  $ 138,324     $ 20,400     $ 15,796     $ 3,211  

State and political subdivisions

    58,013       6,131       2,697       491  

Corporate debt securities

    5,511       506       ---       ---  

Other securities

    167       22       ---       ---  

Total temporarily impaired securities

  $ 202,015     $ 27,059     $ 18,493     $ 3,702  

   

December 31, 2012

 
   

Less Than 12 Months

   

12 Months or More

 
   

Fair
Value

   

Unrealized
Loss

   

Fair
Value

   

Unrealized
Loss

 

U. S. Government agencies and corporations

  $ 44,351     $ 622     $ ---     $ ---  

State and political subdivisions

    9,358       216       482       3  

Other securities

    ---       ---       133       173  

Total temporarily impaired securities

  $ 53,709     $ 838     $ 615     $ 176  

At December 31, 2013, the Company had 286 securities with a fair value of $220,508 which had total unrealized losses of $30,761. The Company has made the determination that these securities are temporarily impaired at December 31, 2013 for the following reasons:


U.S. Government agencies and corporations. The unrealized losses in this category of investments were caused by interest rate fluctuations. The contractual terms of the investments do not permit the issuer to settle the securities at a price less than the cost basis of each investment. Because the Company does not intend to sell any of the investments and the accounting standard of “more likely than not” has not been met for the Company to be required to sell any of these investments before recovery of its amortized cost basis, which may be maturity, the Company does not consider these investments to be other-than-temporarily impaired.


State and political subdivisions. This category’s unrealized losses are primarily the result of interest rate fluctuations and also a certain few ratings downgrades brought about by the impact of the economic downturn on states and political subdivisions. The securities remain investment grade and the Company’s analysis did not indicate the existence of a credit loss. The contractual terms of the investments do not permit the issuer to settle the securities at a price less than the cost basis of each investment. Because the Company does not intend to sell any of the investments and the accounting standard of “more likely than not” has not been met for the Company to be required to sell any of the investments before recovery of its amortized cost basis, which may be maturity, the Company does not consider these investments to be other-than-temporarily impaired.


Corporate debt securities. The Company’s unrealized losses in corporate debt securities are related to both interest rate fluctuations and ratings downgrades for a limited number of securities. The securities remain investment grade and the Company’s analysis did not indicate the existence of a credit loss. The contractual terms of the investments do not permit the issuer to settle the securities at a price less than the cost basis of each investment. Because the Company does not intend to sell any of the investments before recovery of its amortized cost basis, which may be maturity, the Company does not consider these investments to be other-than-temporarily impaired.


Other. The Company holds an investment in an LLC and a small amount of community bank stock. The value of these investments has been negatively affected by market conditions. Because the Company does not intend to sell these investments before recovery of their amortized cost basis, the Company does not consider these investments to be other-than-temporarily impaired.


At December 31, 2012, the Company had 59 securities with a fair value of $54,324 which were temporarily impaired. The total unrealized loss on these securities, which was attributed to interest rate fluctuations, was $1,014. Because the Company had the ability and intent to hold the securities until maturity or until the cost was recovered, the losses associated with the securities were not considered other than temporary at December 31, 2012.


At December 31, 2013 and 2012, securities with a carrying value of $139,873 and $147,114, respectively, were pledged to secure trust deposits and for other purposes as required or permitted by law.


As a member of the Federal Reserve and the Federal Home Loan Bank (“FHLB”) of Atlanta, NBB is required to maintain certain minimum investments in the common stock of those entities. Required levels of investment are based upon NBB’s capital and a percentage of qualifying assets. In addition, NBB is eligible to borrow from the FHLB with borrowings collateralized by qualifying assets, primarily residential mortgage loans totaling approximately $434,722, and NBB’s capital stock investment in the FHLB. Redemption of FHLB stock is subject to certain limitations and conditions. At its discretion, the FHLB may declare dividends on the stock. Management reviews for impairment based upon the ultimate recoverability of the cost basis in the FHLB stock.