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INVESTMENT SECURITIES
 9 Months Ended
Sep. 30, 2016
Investments, Debt and Equity Securities [Abstract]  
INVESTMENT SECURITIES
NOTE 2 – INVESTMENT SECURITIES
Investment Portfolio Composition. The amortized cost and related market value of investment securities available-for-sale and
held-to-maturity were as follows:
September 30, 2016December 31, 2015
AmortizedUnrealizedUnrealizedMarketAmortizedUnrealizedUnrealizedMarket
CostGainsLossesValueCostGainLossesValue
Available for Sale
U.S. Government Treasury$272,656$1,029$-$273,685$250,458$101$213$250,346
U.S. Government Agency129,150569203129,516101,730357263101,824
States and Political Subdivisions86,4901894586,63488,3581039988,362
Mortgage-Backed Securities1,340142-1,4821,742159-1,901
Equity Securities(1)8,822--8,8228,595--8,595
Total $498,458$1,929$248$500,139$450,883$720$575$451,028
Held to Maturity
U.S. Government Treasury$129,323$530$-$129,853$134,554$45$160$134,439
U.S. Government Agency1,9041-1,90510,0437510,045
States and Political Subdivisions9,98369110,05115,69338715,724
Mortgage-Backed Securities48,7183666449,02027,602440727,199
Total $189,928$966$65$190,829$187,892$94$579$187,407
Total Investment Securities$688,386$2,895$313$690,968$638,775$814$1,154$638,435

(1) Includes Federal Home Loan Bank, Federal Reserve Bank, and FNBB, Inc. stock recorded at cost of $3.5 million, $4.8 million, and $0.5 million, respectively, at September 30, 2016 and $3.6 million, $4.8 million, and $0.2 million, respectively, at December 31, 2015.

Securities with an amortized cost of $222.9 million and $370.1 million at September 30, 2016 and December 31, 2015, respectively, were pledged to secure public deposits and for other purposes.

The Bank, as a member of the Federal Home Loan Bank of Atlanta (“FHLB”), is required to own capital stock in the FHLB based generally upon the balances of residential and commercial real estate loans, and FHLB advances.  FHLB stock which is included in equity securities is pledged to secure FHLB advances.  No ready market exists for this stock, and it has no quoted market value; however, redemption of this stock has historically been at par value.

Maturity Distribution. As of September 30, 2016, the Company's investment securities had the following maturity distribution based on contractual maturity. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations. Mortgage-backed securities and certain amortizing U.S. government agency securities are shown separately because they are not due at a certain maturity date.

Available for SaleHeld to Maturity
Amortized  Market   Amortized  Market
(Dollars in Thousands)CostValueCostValue
Due in one year or less$146,612  $146,872  $60,424  $60,503
Due after one through five years  252,653    253,644    80,786    81,305
Mortgage-Backed Securities1,3401,48248,71849,021
U.S. Government Agency  89,031    89,319    -    -
Equity Securities  8,822    8,822    -    -
Total $498,458  $500,139  $189,928  $190,829

Unrealized Losses on Investment Securities. The following table summarizes the investment securities with unrealized losses aggregated by major security type and length of time in a continuous unrealized loss position:

  Less ThanGreater Than
12 Months12 MonthsTotal
MarketUnrealizedMarketUnrealizedMarketUnrealized
(Dollars in Thousands)ValueLossesValueLossesValueLosses
September 30, 2016
Available for Sale
U.S. Government Agency$36,793$153$10,123$50$46,916$203
States and Political Subdivisions28,831  44  298  1  29,129  45
Total 65,624  197  10,421  51  76,045  248
Held to Maturity
States and Political Subdivisions1,2521--1,2521
Mortgage-Backed Securities  2,095    5    7,120    59    9,215    64
Total $3,347  $6  $7,120  $59  $10,467  $65
December 31, 2015
Available for Sale 
U.S. Government Treasury$150,061  $213  $-  $-  $150,061  $213
U.S. Government Agency43,5082009,6446353,152263
States and Political Subdivisions  39,608    86    5,066    13    44,674    99
Total 233,177  499  14,710  76  247,887  575
Held to Maturity
U.S. Government Treasury  92,339    160    -    -    92,339    160
U.S. Government Agency5,0065--5,0065
States and Political Subdivisions3,7917--3,7917
Mortgage-Backed Securities13,26718511,88922222,156407
Total $114,403  $357  $11,889  $222  $126,292  $579

Management evaluates securities for other than temporary impairment at least quarterly, and more frequently when economic or market concerns warrant such evaluation. Declines in the fair value of held-to-maturity and available-for-sale securities below their cost that are deemed to be other than temporary are reflected in earnings as realized losses. In estimating other-than-temporary impairment losses, the Company considers, (i) whether it has decided to sell the security, (ii) whether it is more likely than not that the Company will have to sell the security before its market value recovers, and (iii) whether the present value of expected cash flows is sufficient to recover the entire amortized cost basis. When assessing a security’s expected cash flows, the Company considers, among other things, (i) the length of time and the extent to which the fair value has been less than cost and (ii) the financial condition and near-term prospects of the issuer. In analyzing an issuer’s financial condition, management considers whether the securities are issued by the federal government or its agencies, whether downgrades by rating agencies have occurred, regulatory issues, and analysts’ reports.

At September 30, 2016, there were 165 positions (combined Available-for-Sale and Held-to-Maturity) with an unrealized loss totaling $0.3 million. Of the 165 positions, 69 were Ginnie Mae mortgage-backed securities (GNMA), U.S. Treasuries, or SBA securities, all of which carry the full faith and credit guarantee of the U.S. Government. SBA securities float monthly or quarterly to the prime rate and are uncapped. Of these 69 positions, there were 20 GNMA positions and 24 SBA positions in an unrealized loss position for longer than 12 months. Six agency positions were in an unrealized loss position. There were 90 municipal bonds in an unrealized loss position that were pre-refunded, or rated “AA-“or better. These debt securities are in a loss position because they were acquired when the general level of interest rates was lower than that on September 30, 2016. The Company believes that the unrealized losses in these debt securities are temporary in nature and that the full principal will be collected as anticipated. Because the declines in the market value of these investments are attributable to changes in interest rates and not credit quality and because the Company has the present ability and intent to hold these investments until there is a recovery in fair value, which may be at maturity, the Company does not consider these investments to be other-than-temporarily impaired at September 30, 2016.