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Securities | 9 Months Ended
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Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract] |
Securities | Securities The Company invests in U.S. agency and mortgage-backed securities, obligations of state and political subdivisions, and corporate debt securities. Amortized costs and fair values of securities at September 30, 2018 and December 31, 2017 were as follows (in thousands):
| September 30, 2018
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized (Losses) |  | Fair Value
Securities available for sale: |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities | $ | 91,126 |  |  | $ | 14 |  |  | $ | (3,097 | ) |  | $ | 88,043 |
Obligations of states and political subdivisions | 15,071 |  |  | 25 |  |  | (391 | ) |  | 14,705 |
Total securities available for sale | $ | 106,197 |  |  | $ | 39 |  |  | $ | (3,488 | ) |  | $ | 102,748 |
Securities held to maturity: |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities | $ | 28,233 |  |  | $ | — |  |  | $ | (1,208 | ) |  | $ | 27,025 |
Obligations of states and political subdivisions | 14,506 |  |  | 7 |  |  | (320 | ) |  | 14,193 |
Corporate debt securities | 1,500 |  |  | — |  |  | (11 | ) |  | 1,489 |
Total securities held to maturity | $ | 44,239 |  |  | $ | 7 |  |  | $ | (1,539 | ) |  | $ | 42,707 |
Total securities | $ | 150,436 |  |  | $ | 46 |  |  | $ | (5,027 | ) |  | $ | 145,455 |
| December 31, 2017
| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized (Losses) |  | Fair Value
Securities available for sale: |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities | $ | 76,074 |  |  | $ | 67 |  |  | $ | (1,337 | ) |  | $ | 74,804 |
Obligations of states and political subdivisions | 14,520 |  |  | 86 |  |  | (155 | ) |  | 14,451 |
Total securities available for sale | $ | 90,594 |  |  | $ | 153 |  |  | $ | (1,492 | ) |  | $ | 89,255 |
Securities held to maturity: |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities | $ | 32,149 |  |  | $ | — |  |  | $ | (551 | ) |  | $ | 31,598 |
Obligations of states and political subdivisions | 14,559 |  |  | 74 |  |  | (45 | ) |  | 14,588 |
Corporate debt securities | 1,500 |  |  | 16 |  |  | — |  |  | 1,516 |
Total securities held to maturity | $ | 48,208 |  |  | $ | 90 |  |  | $ | (596 | ) |  | $ | 47,702 |
Total securities | $ | 138,802 |  |  | $ | 243 |  |  | $ | (2,088 | ) |  | $ | 136,957 |
At September 30, 2018 and December 31, 2017, investments in an unrealized loss position that were temporarily impaired were as follows (in thousands):
| September 30, 2018
| Less than 12 months |  | 12 months or more |  | Total
| Fair Value |  | Unrealized (Loss) |  | Fair Value |  | Unrealized (Loss) |  | Fair Value |  | Unrealized (Loss)
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities | $ | 55,198 |  |  | $ | (1,315 | ) |  | $ | 31,743 |  |  | $ | (1,782 | ) |  | $ | 86,941 |  |  | $ | (3,097 | )
Obligations of states and political subdivisions | 8,257 |  |  | (147 | ) |  | 3,063 |  |  | (244 | ) |  | 11,320 |  |  | (391 | )
Total securities available for sale | $ | 63,455 |  |  | $ | (1,462 | ) |  | $ | 34,806 |  |  | $ | (2,026 | ) |  | $ | 98,261 |  |  | $ | (3,488 | )
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities | $ | 8,687 |  |  | $ | (334 | ) |  | $ | 18,338 |  |  | $ | (874 | ) |  | $ | 27,025 |  |  | $ | (1,208 | )
Obligations of states and political subdivisions | 12,452 |  |  | (309 | ) |  | 338 |  |  | (11 | ) |  | 12,790 |  |  | (320 | )
Corporate debt securities | 1,489 |  |  | (11 | ) |  | — |  |  | — |  |  | 1,489 |  |  | (11 | )
Total securities held to maturity | $ | 22,628 |  |  | $ | (654 | ) |  | $ | 18,676 |  |  | $ | (885 | ) |  | $ | 41,304 |  |  | $ | (1,539 | )
Total securities | $ | 86,083 |  |  | $ | (2,116 | ) |  | $ | 53,482 |  |  | $ | (2,911 | ) |  | $ | 139,565 |  |  | $ | (5,027 | )
| December 31, 2017
| Less than 12 months |  | 12 months or more |  | Total
| Fair Value |  | Unrealized (Loss) |  | Fair Value |  | Unrealized (Loss) |  | Fair Value |  | Unrealized (Loss)
Securities available for sale: |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities | $ | 29,963 |  |  | $ | (286 | ) |  | $ | 30,362 |  |  | $ | (1,051 | ) |  | $ | 60,325 |  |  | $ | (1,337 | )
Obligations of states and political subdivisions | 4,469 |  |  | (53 | ) |  | 1,961 |  |  | (102 | ) |  | 6,430 |  |  | (155 | )
Total securities available for sale | $ | 34,432 |  |  | $ | (339 | ) |  | $ | 32,323 |  |  | $ | (1,153 | ) |  | $ | 66,755 |  |  | $ | (1,492 | )
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |
U.S. agency and mortgage-backed securities | $ | 18,301 |  |  | $ | (205 | ) |  | $ | 13,297 |  |  | $ | (346 | ) |  | $ | 31,598 |  |  | $ | (551 | )
Obligations of states and political subdivisions | 6,889 |  |  | (45 | ) |  | — |  |  | — |  |  | 6,889 |  |  | (45 | )
Total securities held to maturity | $ | 25,190 |  |  | $ | (250 | ) |  | $ | 13,297 |  |  | $ | (346 | ) |  | $ | 38,487 |  |  | $ | (596 | )
Total securities | $ | 59,622 |  |  | $ | (589 | ) |  | $ | 45,620 |  |  | $ | (1,499 | ) |  | $ | 105,242 |  |  | $ | (2,088 | )
The tables above provide information about securities that have been in an unrealized loss position for less than twelve consecutive months and securities that have been in an unrealized loss position for twelve consecutive months or more. Management evaluates securities for other-than-temporary impairment at least on a quarterly basis, and more frequently when economic or market concerns warrant such evaluation. Impairment is considered to be other-than-temporary if the Company (1) intends to sell the security, (2) more likely than not will be required to sell the security before recovering its cost, or (3) does not expect to recover the security’s entire amortized cost basis. Presently, the Company does not intend to sell any of these securities, does not expect to be required to sell these securities, and expects to recover the entire amortized cost of all the securities. At September 30, 2018, there were eighty-six out of ninety U.S. agency and mortgage-backed securities, sixty-six out of eighty-one obligations of states and political subdivisions, and one corporate debt security in an unrealized loss position. One hundred percent of the Company’s investment portfolio is considered investment grade. The weighted-average re-pricing term of the portfolio was 4.9 years at September 30, 2018. At December 31, 2017, there were sixty-eight out of eighty-two U.S. agency and mortgage-backed securities and thirty-nine out of eighty obligations of states and political subdivisions in an unrealized loss position. One hundred percent of the Company’s investment portfolio was considered investment grade at December 31, 2017. The weighted-average re-pricing term of the portfolio was 4.7 years at December 31, 2017. The unrealized losses at September 30, 2018 in the U.S. agency and mortgage-backed securities portfolio, the obligations of states and political subdivisions portfolio, and the corporate debt securities portfolio were related to changes in market interest rates and not credit concerns of the issuers. The amortized cost and fair value of securities at September 30, 2018 by contractual maturity are shown below (in thousands). Expected maturities of mortgage-backed securities will differ from contractual maturities because borrowers may have the right to prepay obligations with or without call or prepayment penalties.
| Available for Sale |  | Held to Maturity
| Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due within one year | $ | 1,585 |  |  | $ | 1,596 |  |  | $ | 629 |  |  | $ | 630 |
Due after one year through five years | 7,629 |  |  | 7,532 |  |  | 6,772 |  |  | 6,607 |
Due after five years through ten years | 13,832 |  |  | 13,318 |  |  | 13,560 |  |  | 13,228 |
Due after ten years | 83,151 |  |  | 80,302 |  |  | 23,278 |  |  | 22,242 |
| $ | 106,197 |  |  | $ | 102,748 |  |  | $ | 44,239 |  |  | $ | 42,707 |
Federal Home Loan Bank, Federal Reserve Bank, and Community Bankers’ Bank stock are generally viewed as long-term investments and as restricted securities, which are carried at cost, because there is a minimal market for the stock. Therefore, when evaluating restricted securities for impairment, their value is based on the ultimate recoverability of the par value rather than by recognizing temporary declines in value. The Company does not consider these investments to be other-than-temporarily impaired at September 30, 2018, and no impairment has been recognized. The composition of restricted securities at September 30, 2018 and December 31, 2017 was as follows (in thousands):
| September 30, 2018 |  | December 31, 2017
Federal Home Loan Bank stock | $ | 665 |  |  | $ | 645 |
Federal Reserve Bank stock | 875 |  |  | 875 |
Community Bankers’ Bank stock | 50 |  |  | 50 |
| $ | 1,590 |  |  | $ | 1,570 |

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=4738149 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2176304 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2324412 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2209399 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 320 -URI http://asc.fasb.org/subtopic&trid=2289146 + Details
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