(5) Investment Securities

The following is a summary of the securities portfolio by major classification:

Gross realized gains and losses on sales of securities for the three and nine-month periods ended September 30, 2012 and September 30, 2011 were as follows:

Analysis of Certain Investments in Debt and Equity Securities for Other Than Temporary Impairment

The following tables set forth the amount of unrealized losses at September 30, 2012 and December 31, 2011 (that is, the amount by which cost or amortized cost exceeds fair value), and the related fair value of investments with unrealized losses, none of which are considered to be other-than-temporarily impaired. The tables are segregated into investments that have been in a continuous unrealized-loss position for less than 12 months from those that have been in a continuous unrealized-loss position for 12 months or longer.

As of September 30, 2012 and December 31, 2011, management concluded that the unrealized losses presented above, which consisted of eighteen securities at September 30, 2012 and fifty securities at December 31, 2011, are temporary in nature since they are not related to the underlying credit quality of the issuers, and the Company has the intent to hold these investments for a time necessary to recover their cost and it is not likely that the Bank would be required to sell prior to recovery. The eighteen securities at September 30, 2012 were comprised of one obligation of states and political subdivisions, seven mortgage-backed securities, four corporate bonds and six SBA-backed securities. The fifty securities at December 31, 2011 were comprised of twelve mortgage-backed securities, twelve corporate bonds and twenty-six SBA-backed securities. The losses above are on debt securities that have contractual maturity dates and are primarily related to market interest rates. All unrealized losses on investment securities are not considered to be other-than-temporary, because they are related to changes in interest rates, lack of liquidity and demand in the general investment market and do not affect the expected cash flows of the underlying collateral or the issuer. The Bank’s mortgage-backed securities are all backed by government sponsored enterprises or agencies. The Bank does not own any private label mortgage-backed securities.

At September 30, 2012 and December 31, 2011, the balance of Federal Home Loan Bank (“FHLB”) of Atlanta stock held by the Bank was $4.2 million and $3.5 million, respectively. The FHLB stock is carried at cost, which approximates fair value. The FHLB paid a dividend for the second quarter of 2012 with an annualized rate of 1.47%. The dividend rate was equal to average three-month LIBOR for the period of April 1, 2012 to June 30, 2012 plus 1.00%, and was applicable to capital stock held during that period. Management believes that its investment in FHLB stock was not other-than-temporarily impaired as of September 30, 2012 or December 31, 2011. However, there can be no assurance that the impact of recent or future legislation on the Federal Home Loan Banks will not also cause a decrease in the value of the FHLB stock held by the Bank.

The aggregate amortized cost and fair value of the available-for-sale securities portfolio at September 30, 2012 by remaining contractual maturity are as follows:

Securities with an amortized cost of $218.0 million at September 30, 2012 are pledged as collateral. Of this total, securities with an amortized cost of $85.9 million and fair value of $87.3 million are pledged as collateral for FHLB advances.

The aggregate amortized cost and fair value of the available-for-sale securities portfolio at December 31, 2011 by remaining contractual maturity are as follows:

Securities with an amortized cost of $197.6 million at December 31, 2011 were pledged as collateral. Of this total, securities with an amortized cost of $47.4 million and fair value of $48.0 million were pledged as collateral for FHLB advances.