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Investment Securities | 12 Months Ended
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Dec. 31, 2022
Investment Securities [Abstract] |
INVESTMENT SECURITIES | NOTE 3. INVESTMENT SECURITIES The following table provides information on the amortized cost and estimated fair values of investment securities at December 31. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Gross |  | Gross |  | Estimated
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(Dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 21,798 | ​ | $ | 5 | ​ | $ | 3,625 | ​ | $ | 18,178
Mortgage-backed | ​ |  | 72,183 | ​ |  | 2 | ​ |  | 8,666 | ​ |  | 63,519
Otherd debt securities | ​ | ​ | 2,018 | ​ | ​ | — | ​ | ​ | 128 | ​ | ​ | 1,890
Total | ​ | $ | 95,999 | ​ | $ | 7 | ​ | $ | 12,419 | ​ | $ | 83,587
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 22,932 | ​ | $ | 7 | ​ | $ | 634 | ​ | $ | 22,305
Mortgage-backed | ​ |  | 91,948 | ​ |  | 1,318 | ​ |  | 629 | ​ |  | 92,637
Other debt securities | ​ |  | 2,026 | ​ |  | 14 | ​ |  | — | ​ |  | 2,040
Total | ​ | $ | 116,906 | ​ | $ | 1,339 | ​ | $ | 1,263 | ​ | $ | 116,982
​ No available for sale securities were sold during 2022 and 2021. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | Gross |  | Gross |  | Estimated
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(Dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
Held-to-maturity securities: |  | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | ​ | ​
December 31, 2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 148,097 | ​ | $ | — | ​ | $ | 13,601 | ​ | $ | 134,496
Mortgage-backed | ​ | ​ | 398,884 | ​ | ​ | — | ​ | ​ | 50,464 | ​ | ​ | 348,420
States and political subdivisions | ​ |  | 1,474 | ​ |  | 35 | ​ |  | 28 | ​ |  | 1,481
Other debt securities | ​ |  | 11,000 | ​ |  | — | ​ |  | 770 | ​ |  | 10,230
Total | ​ | $ | 559,455 | ​ | $ | 35 | ​ | $ | 64,863 | ​ | $ | 494,627
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
December 31, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 87,072 | ​ | $ | 20 | ​ | $ | 1,231 | ​ | $ | 85,861
Mortgage-backed | ​ | ​ | 302,604 | ​ | ​ | 301 | ​ | ​ | 2,248 | ​ | ​ | 300,657
States and political subdivisions | ​ |  | 400 | ​ |  | 2 | ​ |  | — | ​ |  | 402
Other debt securities | ​ |  | 14,518 | ​ |  | 95 | ​ |  | 9 | ​ |  | 14,604
Total | ​ | $ | 404,594 | ​ | $ | 418 | ​ | $ | 3,488 | ​ | $ | 401,524
​ Equity securities with an aggregate fair value of $1.2 million at December 31, 2022 and $1.4 million at December 31, 2021 are presented separately on the balance sheet. The fair value adjustment recorded through earnings totaled $(157) thousand for 2022 and $(40) thousand for 2021, respectively. ​ ​ ​ The following table provides information about gross unrealized losses and fair value by length of time that the individual securities have been in a continuous unrealized loss position at December 31. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less than | ​ | More than | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 12 Months | ​ | 12 Months | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(Dollars in thousands) | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses
December 31, 2022 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 1,165 | ​ | $ | 4 | ​ | $ | 16,585 | ​ | $ | 3,588 | ​ | $ | 17,750 | ​ | $ | 3,592
Mortgage-backed | ​ |  | 29,125 | ​ |  | 2,409 | ​ |  | 34,167 | ​ |  | 6,290 | ​ |  | 63,292 | ​ |  | 8,699
Other debt securities | ​ | ​ | 1,890 | ​ | ​ | 128 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,890 | ​ | ​ | 128
Total | ​ | $ | 32,180 | ​ | $ | 2,541 | ​ | $ | 50,752 | ​ | $ | 9,878 | ​ | $ | 82,932 | ​ | $ | 12,419
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-maturity securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 67,332 | ​ | $ | 2,786 | ​ | $ | 67,163 | ​ | $ | 10,815 | ​ | $ | 134,495 | ​ | $ | 13,601
Mortgage-backed | ​ | ​ | 148,771 | ​ | ​ | 9,402 | ​ | ​ | 199,649 | ​ | ​ | 41,062 | ​ | ​ | 348,420 | ​ | ​ | 50,464
States and political subdivisions | ​ | ​ | 780 | ​ | ​ | 28 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 780 | ​ | ​ | 28
Other debt securities | ​ | ​ | 8,091 | ​ | ​ | 409 | ​ | ​ | 2,139 | ​ | ​ | 361 | ​ | ​ | 10,230 | ​ | ​ | 770
Total | ​ | $ | 224,974 | ​ | $ | 12,625 | ​ | $ | 268,951 | ​ | $ | 52,238 | ​ | $ | 493,925 | ​ | $ | 64,863
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Less than | ​ | More than | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 12 Months | ​ | 12 Months | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(Dollars in thousands) | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses | ​ | Value | ​ | Losses
December 31, 2021 | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Available-for-sale securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 1,561 | ​ | $ | 1 | ​ | $ | 17,368 | ​ | $ | 633 | ​ | $ | 18,929 | ​ | $ | 634
Mortgage-backed | ​ |  | 39,851 | ​ |  | 593 | ​ |  | 3,562 | ​ |  | 36 | ​ |  | 43,413 | ​ |  | 629
Total | ​ | $ | 41,412 | ​ | $ | 594 | ​ | $ | 20,930 | ​ | $ | 669 | ​ | $ | 62,342 | ​ | $ | 1,263
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-maturity securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government agencies | ​ | $ | 64,268 | ​ | $ | 1,005 | ​ | $ | 11,719 | ​ | $ | 226 | ​ | $ | 75,987 | ​ | $ | 1,231
Mortgage-backed | ​ | ​ | 226,918 | ​ | ​ | 1,836 | ​ | ​ | 14,564 | ​ | ​ | 412 | ​ | ​ | 241,482 | ​ | ​ | 2,248
Other debt securities | ​ |  | 491 | ​ |  | 9 | ​ |  | — | ​ |  | — | ​ |  | 491 | ​ |  | 9
Total | ​ | $ | 291,677 | ​ | $ | 2,850 | ​ | $ | 26,283 | ​ | $ | 638 | ​ | $ | 317,960 | ​ | $ | 3,488
​ All of the securities with unrealized losses in the portfolio have modest duration risk, low credit risk, and minimal losses when compared to total amortized cost. The unrealized losses on debt securities that exist are the result of market changes in interest rates since original purchase and are not related to credit concerns. Because the Company does not intend to sell these securities and it is not more likely than not that the Company will be required to sell these securities before recovery of their amortized cost bases, which may be at maturity for debt securities, the Company considers the unrealized losses to be temporary. There were a hundred and sixteen available-for-sale securities and a hundred and ninety two held to maturity securities in an unrealized loss position at December 31, 2022. There were thirty-five available-for-sale securities and a hundred and fourteen held to maturity securities in an unrealized loss position at December 31, 2021. The following table provides information on the amortized cost and estimated fair values of investment securities by maturity date at December 31, 2022. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Available for sale | ​ | Held to maturity
​ |  | Amortized |  | ​ | ​ |  | Amortized |  | ​ | ​
(Dollars in thousands) | ​ | Cost | ​ | Fair Value | ​ | Cost | ​ | Fair Value
Due in one year or less | ​ | $ | 75 | ​ | $ | 74 | ​ | $ | 2,117 | ​ | $ | 2,076
Due after one year through five years | ​ |  | 6,658 | ​ |  | 6,351 | ​ |  | 108,632 | ​ |  | 101,165
Due after five years through ten years | ​ |  | 42,689 | ​ |  | 37,856 | ​ |  | 73,054 | ​ |  | 66,502
Due after ten years | ​ |  | 46,577 | ​ |  | 39,306 | ​ |  | 375,652 | ​ |  | 324,884
Total | ​ | $ | 95,999 | ​ | $ | 83,587 | ​ | $ | 559,455 | ​ | $ | 494,627
​ The maturity dates for debt securities are determined using contractual maturity dates. The following table sets forth the amortized cost and estimated fair values of securities which have been pledged as collateral for obligations to federal, state and local government agencies, and other purposes as required or permitted by law, or sold under agreements to repurchase at December 31, 2022 and 2021. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2022 | ​ | 2021
​ |  | Amortized |  | ​ | ​ |  | Amortized |  | ​ | ​
(Dollars in thousands) | ​ | Cost | ​ | Fair Value | ​ | Cost | ​ | Fair Value
Pledged available-for-sale securities | ​ | $ | 83,288 | ​ | ​ | 72,108 | ​ | $ | 78,522 | ​ | $ | 78,352
Pledged held to maturity securities | ​ | ​ | 19,158 | ​ | ​ | 16,305 | ​ | ​ | 913 | ​ | ​ | 915
​ There were no obligations of states or political subdivisions with carrying values, as to any issuer, exceeding 10% of stockholders’ equity at December 31, 2022 or 2021.

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- Definition The entire disclosure for investments in certain debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2209399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2324412 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI https://asc.fasb.org/topic&trid=2196928 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -URI https://asc.fasb.org/subtopic&trid=2176304 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1403 -Paragraph (b) + Details
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