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Securities | 12 Months Ended
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Dec. 31, 2017
Investments debt and equity securities [Abstract] |
Investments In Debt And Marketable Equity Securities And Certain Trading Assets Disclosure Text Block | NOTE 5: SECURITIES At December 31, 2017 and 2016, respectively, all securities within the scope of ASC 320, Investments – Debt and Equity Securities were classified as available-for-sale. The fair value and amortized cost for securities available-for-sale by contractual maturity at December 31, 2017 and 2016, respectively, are presented below.
|  |  | 1 year | 1 to 5 | 5 to 10 | After 10 | Fair |  | Gross Unrealized |  | Amortized
(Dollars in thousands) |  | or less | years | years | years | Value |  | Gains | Losses |  | Cost
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |
Agency obligations (a) | $ | — | 29,253 | 23,809 | — | 53,062 |  | 79 | 904 |  | $ | 53,887
Agency RMBS (a) |  | — | — | 11,201 | 121,871 | 133,072 |  | 330 | 1,639 |  |  | 134,381
State and political subdivisions |  | — | 2,564 | 9,999 | 59,000 | 71,563 |  | 1,616 | 237 |  |  | 70,184
| Total available-for-sale | $ | — | 31,817 | 45,009 | 180,871 | 257,697 |  | 2,025 | 2,780 |  | $ | 258,452
December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |
Agency obligations (a) | $ | 3,047 | 22,531 | 19,893 | — | 45,471 |  | 331 | 973 |  | $ | 46,113
Agency RMBS (a) |  | — | 972 | 16,171 | 110,644 | 127,787 |  | 551 | 1,805 |  | $ | 129,041
State and political subdivisions |  | — | 2,480 | 10,210 | 57,624 | 70,314 |  | 1,509 | 734 |  | $ | 69,539
| Total available-for-sale | $ | 3,047 | 25,983 | 46,274 | 168,268 | 243,572 |  | 2,391 | 3,512 |  | $ | 244,693
(a) Includes securities issued by U.S. government agencies or government sponsored entities.
Securities with aggregate fair values of $149.4 million and $137.2 million at December 31, 2017 and 2016, respectively, were pledged to secure public deposits, securities sold under agreements to repurchase, Federal Home Loan Bank (“FHLB”) advances, and for other purposes required or permitted by law. Included in other assets on the accompanying consolida ted balance sheets are cost-method investments. The carrying amounts of cost-method investments were $1.4 million at December 31, 2017 and 2016, respectively. Cost-method investments primarily include non-marketable equity investments, such as FHLB of A tlanta stock and Federal Reserve Bank (“FRB”) stock. Gross Unrealized Losses and Fair Value The fair values and gross unrealized losses on securities at December 31, 2017 and 2016, respectively, segregated by those securities that have been in an unrealized lo ss position for less than 12 months and 12 months or more are presented below.
|  |  |  | Less than 12 Months |  |  | 12 Months or Longer |  |  | Total
|  |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized
(Dollars in thousands) |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses
December 31, 2017: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency obligations | $ | 14,381 |  |  | 99 |  |  | 20,353 |  |  | 805 |  |  | 34,734 |  | $ | 904
Agency RMBS |  | 53,440 |  |  | 363 |  |  | 50,729 |  |  | 1,276 |  |  | 104,169 |  |  | 1,639
State and political subdivisions |  | 2,009 |  |  | 22 |  |  | 10,155 |  |  | 215 |  |  | 12,164 |  |  | 237
|  | Total | $ | 69,830 |  |  | 484 |  |  | 81,237 |  |  | 2,296 |  |  | 151,067 |  | $ | 2,780
December 31, 2016: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency obligations | $ | 20,352 |  |  | 973 |  |  | — |  |  | — |  |  | 20,352 |  | $ | 973
Agency RMBS |  | 89,062 |  |  | 1,805 |  |  | — |  |  | — |  |  | 89,062 |  |  | 1,805
State and political subdivisions |  | 20,444 |  |  | 734 |  |  | — |  |  | — |  |  | 20,444 |  |  | 734
|  | Total | $ | 129,858 |  |  | 3,512 |  |  | — |  |  | — |  |  | 129,858 |  | $ | 3,512
For the securities in the previous table, the Company does not have the intent to sell and has determined it is not more likely than not that the Company will be required to sell the security before recovery of the amortized cost basis, which may be maturity. The Company assesses each security for credit impairment. For debt securities, the Company evaluates, where necessary, whether credit impairment exists by comparing the present value of the expected cash flows to the securities’ amortized cost ba sis. For cost-method investments, the Company evaluates whether an event or change in circumstances has occurred during the reporting period that may have a significant adverse effect on the fair value of the investment. In determining whether a loss is temporary, the Company considers all relevant information including: the length of time and the extent to which the fair value has been less than the amortized cost basis; adverse conditions specifically related to the security, an industry, or a geogr aphic area (for example, changes in the financial condition of the issuer of the security, or in the case of an asset-backed debt security, in the financial condition of the underlying loan obligors, including changes in technology or the discontinuance of a segment of the business that may affect the future earnings potential of the issuer or underlying loan obligors of the security or changes in the quality of the credit enhancement); the historical and implied volatility of the fair value of the security; the payment structure of the debt security and the likelihood of the issuer being able to make payments that increase in the future; failure of the issuer of the security to make scheduled interest or principal payments; any changes to the rating of t he security by a rating agency; and recoveries or additional declines in fair value subsequent to the balance sheet date. Agency obligations The unrealized losses associated with agency obligations were primarily driven by changes in interest rates and not due to the credit quality of the securities. These securities were issued by U.S. government agencies or government-sponsored entities and did not have any credit losses given the explicit government guarantee or other government support. Agency resid ential mortgage-backed securities (“RMBS”) The unrealized losses associated with agency RMBS were primarily driven by changes in interest rates and not due to the credit quality of the securities. These securities were issued by U.S. government agencies or government-sponsored entities and did not have any credit losses given the explicit government guarantee or other government support. Securities of U.S. states and political subdivisions The unrealized losses associated with securities of U.S. state s and political subdivisions were primarily driven by changes in interest rates and were not due to the credit quality of the securities. Some of these securities are guaranteed by a bond insurer, but management did not rely on the guarantee in making its investment decision. These securities will continue to be monitored as part of the Company’s quarterly impairment analysis, but are expected to perform even if the rating agencies reduce the credit rating of the bond insurers. As a result, the Company expe cts to recover the entire amortized cost basis of these securities. Cost-method investments At December 31, 2017, cost-method investments with an aggregate cost of $1.4 million were not evaluated for impairment because the Company did not identify any events or changes in circumstances that may have a significant adverse effect on the fair value of these cost-method investments. The carrying values of the Company’s investment securities could decline in the future if the financial condition of an issuer deteriorates and the Company determines it is probable that it will not recover the entire amortized cost basis for the security. As a result, there is a risk that significant other-than-temporary impairment charges may occur in the future. Other-Than-Temporarily Impaired Securities Credit-impaired debt securities are debt securities where the Company has written down the amortized cost basis of a security for other-than-temporary impairment and the credit component of the loss is recognized in earnings. At December 31, 2017 and 2016, respectively, the Company had no credit-impaired debt securities and there were no additions or reductions in the credit loss component of credit-impaired debt securities during the years ended D ecember 31, 2017 and 2016, respectively.
Realized Gains and Losses
The following table presents the gross realized gains and losses on sales related to securities.
|  |  |  | Year ended December 31
(Dollars in thousands) |  |  | 2017 |  |  | 2016
Gross realized gains |  | $ | 51 |  |  | 166
Gross realized losses |  |  | — |  |  | (387)
| Realized gains (losses), net |  | $ | 51 |  |  | (221)

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