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Securities (Tables) | 12 Months Ended
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Dec. 31, 2021
Securities [Abstract] |
Schedule of Available-for-sale Securities Reconciliation | The amortized cost and fair value of securities available-for-sale and securities held-to-maturity at December 31, 2021 and 2020 are summarized as follow (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
Available-for-sale: | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Treasury | ​ | $ | 138,212 | ​ | $ | 64 | ​ | $ | (518) | ​ | $ | 137,758
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 21,898 | ​ | ​ | 76 | ​ | ​ | (173) | ​ | ​ | 21,801
Municipal securities | ​ |  | 67,310 | ​ |  | 512 | ​ |  | (2) | ​ |  | 67,820
Other debt securities | ​ |  | 26,989 | ​ |  | 313 | ​ |  | (82) | ​ |  | 27,220
Mortgage-backed securities (GSEs) | ​ |  | 228,011 | ​ |  | 971 | ​ |  | (1,128) | ​ |  | 227,854
Total | ​ | $ | 482,420 | ​ | $ | 1,936 | ​ | $ | (1,903) | ​ | $ | 482,453
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
Available-for-sale: | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Government-sponsored enterprises (GSEs) | ​ | $ | 30,526 | ​ | $ | 10 | ​ | $ | (6) | ​ | $ | 30,530
Municipal securities | ​ |  | 89,644 | ​ |  | 2,345 | ​ |  | — | ​ |  | 91,989
Other debt securities | ​ |  | 25,019 | ​ |  | 112 | ​ |  | (13) | ​ |  | 25,118
Mortgage-backed securities (GSEs) | ​ |  | 66,425 | ​ |  | 1,754 | ​ |  | (182) | ​ |  | 67,997
Total | ​ | $ | 211,614 | ​ | $ | 4,221 | ​ | $ | (201) | ​ | $ | 215,634
Schedule of Held-to-maturity Securities Reconciliation | ​
​ ​ ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021
​ |  | ​ | ​ |  | Gross |  | Gross |  | ​ | ​
​ | ​ | Amortized | ​ | Unrealized | ​ | Unrealized | ​ | Fair
Held-to-maturity: | ​ | Cost | ​ | Gains | ​ | Losses | ​ | Value
U.S. Government-sponsored enterprises (GSEs) | ​ | $ | 31,023 | ​ | $ | 20 | ​ | $ | (87) | ​ | $ | 30,956
Municipal securities | ​ |  | 45,946 | ​ |  | 63 | ​ |  | (19) | ​ |  | 45,990
Total | ​ | $ | 76,969 | ​ | $ | 83 | ​ | $ | (106) | ​ | $ | 76,946
Investments Classified by Contractual Maturity Date | The amortized cost and estimated market value of securities by contractual maturity, are shown below (in thousands). Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. ​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021
​ |  | Amortized |  | Fair
Available-for-sale: | ​ | Cost | ​ | Value
Due in one year or less | ​ | $ | 907 | ​ | $ | 911
Due from one year to five years | ​ |  | 66,807 | ​ |  | 66,584
Due from five years to ten years | ​ |  | 131,800 | ​ |  | 131,926
Due after ten years | ​ |  | 54,895 | ​ |  | 55,178
​ | ​ |  | 254,409 | ​ |  | 254,599
Mortgage-backed securities | ​ |  | 228,011 | ​ |  | 227,854
Total | ​ | $ | 482,420 | ​ | $ | 482,453
​ | ​ | ​ | ​ | ​ | ​ | ​
Held-to-maturity: | ​ | ​ | ​ | ​ | ​ | ​
Due in one year or less | ​ | $ | — | ​ | $ | —
Due from one year to five years | ​ |  | — | ​ |  | —
Due from five years to ten years | ​ |  | 4,061 | ​ |  | 4,051
Due after ten years | ​ |  | 72,908 | ​ |  | 72,895
​ | ​ |  | 76,969 | ​ |  | 76,946
Mortgage-backed securities | ​ |  | — | ​ |  | —
Total | ​ | $ | 76,969 | ​ | $ | 76,946
Schedule of Unrealized Loss on Investments | The following tables present the gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities available-for-sale and securities held-to-maturity have been in a continuous unrealized loss position, as of December 31, 2021 and 2020 (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2021
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
Available-for-sale: | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
U.S. Treasury | ​ | $ | 99,959 | ​ | $ | (518) | ​ | 11 | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 99,959 | ​ | $ | (518) | ​ | 11
U.S. Government-sponsored enterprises (GSEs) | ​ | ​ | 14,156 | ​ | ​ | (168) | ​ | 2 | ​ | ​ | 579 | ​ | ​ | (5) | ​ | 2 | ​ | ​ | 14,735 | ​ | ​ | (173) | ​ | 4
Municipal securities | ​ |  | 2,519 | ​ |  | (2) | ​ | 1 | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 2,519 | ​ |  | (2) | ​ | 1
Other debt securities | ​ |  | 5,983 | ​ |  | (82) | ​ | 6 | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 5,983 | ​ |  | (82) | ​ | 6
Mortgage-backed securities (GSEs) | ​ |  | 159,725 | ​ |  | (1,002) | ​ | 31 | ​ |  | 8,233 | ​ |  | (126) | ​ | 6 | ​ |  | 167,958 | ​ |  | (1,128) | ​ | 37
Total | ​ | $ | 282,342 | ​ | $ | (1,772) | ​ | 51 | ​ | $ | 8,812 | ​ | $ | (131) | ​ | 8 | ​ | $ | 291,154 | ​ | $ | (1,903) | ​ | 59
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ ​ | ​ | December 31, 2021
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
Held-to-maturity: | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
U.S. Government-sponsored enterprises (GSEs) | ​ | $ | 21,901 | ​ | $ | (87) | ​ | 8 | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 21,901 | ​ | $ | (87) | ​ | 8
Municipal securities | ​ |  | 4,173 | ​ |  | (19) | ​ | 6 | ​ |  | — | ​ |  | — | ​ | — | ​ |  | 4,173 | ​ |  | (19) | ​ | 6
Total | ​ | $ | 26,074 | ​ | $ | (106) | ​ | 14 | ​ | $ | — | ​ | $ | — | ​ | — | ​ | $ | 26,074 | ​ | $ | (106) | ​ | 14
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2020
​ | ​ | Less than 12 Months | ​ | 12 Months or Greater | ​ | Total
​ |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number |  | ​ | ​ |  | Gross | ​ | Number
​ | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of | ​ | Fair | ​ | Unrealized | ​ | of
Available-for-sale: | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities | ​ | Value | ​ | Losses | ​ | Securities
December 31, 2020: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Government-sponsored enterprises (GSEs) | ​ | $ | 15,510 | ​ | $ | (5) | ​ | 3 | ​ | $ | 132 | ​ | $ | (1) | ​ | 1 | ​ | $ | 15,642 | ​ | $ | (6) | ​ | 4
Other debt securities | ​ |  | 1,495 | ​ |  | (5) | ​ | 1 | ​ |  | 977 | ​ |  | (8) | ​ | 1 | ​ |  | 2,472 | ​ |  | (13) | ​ | 2
Mortgage-backed securities (GSEs) | ​ |  | 9,790 | ​ |  | (87) | ​ | 6 | ​ |  | 6,083 | ​ |  | (95) | ​ | 3 | ​ |  | 15,873 | ​ |  | (182) | ​ | 9
Total | ​ | $ | 26,795 | ​ | $ | (97) | ​ | 10 | ​ | $ | 7,192 | ​ | $ | (104) | ​ | 5 | ​ | $ | 33,987 | ​ | $ | (201) | ​ | 15
Schedule of Other Investments | The following is the amortized cost and carrying value of other investments (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ |  | 2021 |  | 2020
Federal Reserve Bank stock | ​ | $ | 9,693 |  | $ | 8,606
Federal Home Loan Bank stock | ​ |  | 6,451 |  | ​ | 5,838
First National Bankers Bank stock | ​ |  | 350 |  | ​ | 350
Total | ​ | $ | 16,494 | ​ | $ | 14,794

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- Definition For all investments in an unrealized loss position, including those for which other-than-temporary impairments have not been recognized in earnings (including investments for which a portion of an other-than-temporary impairment has been recognized in other comprehensive income), a tabular disclosure of the aggregate related fair value of investments with unrealized losses and the aggregate amount of unrealized losses (that is, the amount by which amortized cost basis exceeds fair value). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 + Details
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