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Investment Securities | 12 Months Ended
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Dec. 31, 2022
Investment Securities |
Investment Securities | Note 3. Investment Securities A summary of the amortized cost and market value of securities available for sale at December 31, 2022 and 2021 is as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | At December 31, 2022
​ | ​ | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Collateralized mortgage obligations | ​ | $ | 17,596 | ​ | $ | 7 | ​ | $ | (2,348) | ​ | $ | 15,255
Agency mortgage-backed securities | ​ |  | 58,801 | ​ |  | — | ​ |  | (6,908) | ​ |  | 51,893
Municipal securities | ​ | ​ | 43,092 | ​ | ​ | 1 | ​ | ​ | (10,796) | ​ | ​ | 32,297
U.S. Government agency securities | ​ | ​ | 45,471 | ​ | ​ | — | ​ | ​ | (8,891) | ​ | ​ | 36,580
Corporate securities | ​ | ​ | 1,500 | ​ | ​ | — | ​ | ​ | (175) | ​ | ​ | 1,325
U.S. Treasury securities | ​ |  | 6,993 | ​ |  | — | ​ |  | (210) | ​ |  | 6,783
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities available for sale | ​ | $ | 173,453 | ​ | $ | 8 | ​ | $ | (29,328) | ​ | $ | 144,133
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | At December 31, 2021
​ | ​ | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
(dollars in thousands) | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Collateralized mortgage obligations | ​ | $ | 21,730 | ​ | $ | 169 | ​ | $ | (211) | ​ | $ | 21,688
Agency mortgage-backed securities | ​ |  | 56,252 | ​ |  | 356 | ​ |  | (419) | ​ |  | 56,189
Municipal securities | ​ | ​ | 44,594 | ​ | ​ | 811 | ​ | ​ | (180) | ​ | ​ | 45,225
U.S. Government agency securities | ​ | ​ | 32,616 | ​ | ​ | 4 | ​ | ​ | (1,269) | ​ | ​ | 31,351
Corporate securities | ​ |  | 1,500 | ​ | ​ | — | ​ | ​ | (26) | ​ | ​ | 1,474
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities available for sale | ​ | $ | 156,692 | ​ | $ | 1,340 | ​ | $ | (2,105) | ​ | $ | 155,927
​ Investment securities are accounted for according to their purpose and holding period. Trading securities are those that are bought and held principally for the purpose of selling them in the near term. The Company held no trading securities at December 31, 2022 or December 31, 2021. Available-for-sale investment securities, comprised of debt and mortgage-backed securities, are those that may be sold before maturity due to changes in the Company's interest rate risk profile or funding needs, and are reported at fair value with unrealized gains and losses, net of taxes, reported as a component of other comprehensive income or loss. Held-to-maturity investment securities are those that management has the positive intent and ability to hold to maturity and are reported at amortized cost. The Company held no held-to-maturity securities at December 31, 2022 or December 31, 2021. Realized gains and losses are recorded in noninterest income and are determined on a trade date basis using the specific identification method. Interest and dividends on investment securities are recognized in interest income on an accrual basis. Premiums and discounts are amortized or accreted into interest income using the interest method over the expected lives of the individual securities. The following tables show the fair value and gross unrealized losses associated with the investment portfolio, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2022 and 2021: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2022
​ | ​ | Less than 12 months | ​ | 12 months or more | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(dollars in thousands) | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Collateralized mortgage obligations | ​ | $ | 8,315 | ​ | $ | (364) | ​ | $ | 6,127 | ​ | $ | (1,984) | ​ | $ | 14,442 | ​ | $ | (2,348)
Agency mortgage-backed securities | ​ | ​ | 20,029 | ​ | ​ | (1,308) | ​ | ​ | 31,865 | ​ | ​ | (5,600) | ​ | ​ | 51,894 | ​ | ​ | (6,908)
Municipal securities | ​ | ​ | 18,456 | ​ | ​ | (5,438) | ​ | ​ | 13,340 | ​ | ​ | (5,358) | ​ | ​ | 31,796 | ​ | ​ | (10,796)
U.S. Government agency securities | ​ |  | 13,526 | ​ | ​ | (474) | ​ | ​ | 22,767 | ​ | ​ | (8,417) | ​ | ​ | 36,293 | ​ | ​ | (8,891)
Corporate securities | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 1,325 | ​ | ​ | (175) | ​ | ​ | 1,325 | ​ | ​ | (175)
U.S. Treasury securities | ​ |  | 6,783 | ​ |  | (210) | ​ |  | — | ​ |  | — | ​ |  | 6,783 | ​ |  | (210)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | $ | 67,109 | ​ | $ | (7,794) | ​ | $ | 75,424 | ​ | $ | (21,534) | ​ | $ | 142,533 | ​ | $ | (29,328)
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2021
​ | ​ | Less than 12 months | ​ | 12 months or more | ​ | Total
​ |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(dollars in thousands) | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss | ​ | Value | ​ | Loss
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Collateralized mortgage obligations | ​ | $ | 7,917 | ​ | $ | (194) | ​ | $ | 876 | ​ | $ | (17) | ​ | $ | 8,793 | ​ | $ | (211)
Agency mortgage-backed securities | ​ | ​ | 42,109 | ​ | ​ | (414) | ​ | ​ | 197 | ​ | ​ | (5) | ​ | ​ | 42,306 | ​ | ​ | (419)
Municipal securities | ​ | ​ | 18,603 | ​ | ​ | (180) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 18,603 | ​ | ​ | (180)
U.S. Government agency securities | ​ | ​ | 13,976 | ​ | ​ | (420) | ​ | ​ | 15,942 | ​ | ​ | (849) | ​ | ​ | 29,918 | ​ | ​ | (1,269)
Corporate securities | ​ |  | 1,474 | ​ |  | (26) | ​ |  | — | ​ |  | — | ​ |  | 1,474 | ​ |  | (26)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | $ | 84,079 | ​ | $ | (1,234) | ​ | $ | 17,015 | ​ | $ | (871) | ​ | $ | 101,094 | ​ | $ | (2,105)
​ At December 31, 2022 and 2021, the Company did not have any securities that had impairment charges. The Company's investment securities portfolio consists primarily of debt securities issued by U.S. Government agencies, U.S. Government-sponsored agencies, Corporate securities, state governments and local municipalities. There were no private label mortgage-backed securities ("MBS") or collateralized mortgage obligations ("CMO") held in the investment securities portfolio as of December 31, 2022 and December 31, 2021. The fair value of investment securities is impacted by interest rates, credit spreads, market volatility and liquidity conditions. Net unrealized gains and losses in the available for sale portfolio are included in shareholders' equity as a component of accumulated other comprehensive income or loss, net of tax. An unrealized loss exists when the current fair value of an individual security is less than the amortized cost basis. The Company does not believe that the available-for-sale debt securities that were in an unrealized loss position have any credit loss impairment upon adoption of ASC 326 on January 1, 2021 or as of December 31, 2022. As of December 31, 2022, the Company did not intend to sell the investment securities that were in an unrealized loss position. It is more likely than not that the Company will not be required to sell the investment securities before recovery of their amortized cost basis, which may be at maturity. Available-for-sale debt securities issued by U.S. government agencies or U.S. government sponsored enterprises carry the explicit and/or implicit guarantee of the U.S. government and have a long history of zero credit loss. Municipal bonds are considered to have issuer(s) of high credit quality (rated A or higher) and the decline in fair value is due to changes in interest rates and other market conditions. Corporate securities are non-rated investments that are booked as a debt security where rating agencies do not provide a rating. The absence of a rating does not imply substandard quality. Non-rated corporate securities may be purchased from issuers operating in and around the Company’s operating footprint. The issuer(s) continues to make timely principal and interest payments on the bonds. The fair value is expected to recover as the bond(s) approach maturity. The Company held fifty-six U.S. Government agency, seventy-four collateralized mortgage obligations, one treasury security and eighty-three agency mortgage-backed securities that were in an unrealized loss position at December 31, 2022. Principal and interest payments of the underlying collateral for each of these securities are backed by U.S. Government sponsored agencies and carry minimal credit risk. Management found no evidence of credit loss impairment on any of these securities and believes the unrealized losses are due to fluctuations in fair values resulting from changes in market interest rates and are considered temporary as of December 31, 2022. The Company held one corporate security that was in an unrealized loss position at December 31, 2022. Management believes the unrealized losses were the result of movements in long-term interest rates and are not reflective of any credit deterioration. All municipal securities held in the investment portfolio are reviewed on at least a quarterly basis for credit loss impairment. Each bond carries an investment grade rating by either Moody's or Standard & Poor's. In addition, the Company periodically conducts its own independent review on each issuer to ensure the financial stability of the municipal entity. The largest geographic concentration was in Maryland and consisted of either general obligation or revenue bonds backed by the taxing power of the issuing municipality. At December 31, 2022, the investment portfolio included thirty-five municipal securities that were in an unrealized loss position. Management believes the unrealized losses were the result of movements in long-term interest rates and are not reflective of any credit deterioration. At December 31, 2022 and 2021, investment securities in the amount of approximately $0 and $1.2 million, respectively, were pledged as collateral for interest rate swap contracts for 2021. Unrealized losses on securities in the investment portfolio amounted to $29.3 million with a total fair value of $142.5 million as of December 31, 2022 compared to unrealized losses of $2.1 million with a total fair value of $101.1 million as of December 31, 2021. The Company believes the unrealized losses presented in the tables above are temporary in nature and primarily related to market interest rates or limited trading activity in a particular type of security rather than the underlying credit quality of the issuers. The Company does not believe that these losses are other than temporary and does not currently intend to sell or believe it will be required to sell securities in an unrealized loss position prior to maturity or recovery of the amortized cost bases. The following table presents investment securities by stated maturity at December 31, 2022. Collateralized mortgage obligations and agency mortgage-backed securities have expected maturities that differ from contractual maturities because borrowers have the right to call or prepay obligations with or without prepayment penalties and, therefore, these securities are classified separately with no specific maturity date. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | At December 31, 2022
​ | ​ | Amortized | ​ | Fair
(dollars in thousands) |  | Cost |  | Value
​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
Due within one year | ​ | $ | — | ​ | $ | —
Due over one to five years | ​ |  | 22,235 | ​ |  | 21,505
Due over five to ten years | ​ |  | 15,891 | ​ |  | 13,348
Due over ten years | ​ |  | 58,930 | ​ |  | 42,132
Collateralized mortgage obligations | ​ | ​ | 17,596 | ​ | ​ | 15,255
Agency mortgage-backed securities | ​ |  | 58,801 | ​ |  | 51,893
​ | ​ | ​ | ​ | ​ | ​ | ​
Total securities available for sale | ​ | $ | 173,453 | ​ | $ | 144,133
​ No investment securities were sold in 2022. Proceeds from sales of available for sale securities prior to maturity totaled $32.7 million for the year ended December 31, 2021. The Bank realized net losses of $0 and net losses of $588,000 for the years ended December 31, 2022 and 2021, respectively. Realized gains and losses were calculated based on the amortized cost of the securities at the date of trade.

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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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