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Investment Securities (Details) - Schedule of unrealized losses not recognized in income - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
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Investment Securities Available-for-Sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | $ 251,268 | $ 40,838
Investment Securities Available-for-Sale: Total, Unrealized Losses | (3,594) | (386)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 247,028 | 38,365
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (3,191) | (345)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 4,240 | 2,473
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (403) | (41)
Residential mortgage pass-through securities [Member] |  |
Investment Securities Available-for-Sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 171,592 | 20,895
Investment Securities Available-for-Sale: Total, Unrealized Losses | (2,073) | (41)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 171,592 | 20,886
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (2,073) | (41)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value |  | 9
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses |  |
Commercial mortgage pass-through securities [Member] |  |
Investment Securities Available-for-Sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 6,349 | 3,954
Investment Securities Available-for-Sale: Total, Unrealized Losses | (468) | (187)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 2,658 | 3,954
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (67) | (187)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 3,691 |
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | (401) |
Obligations of U.S. states and political subdivisions [Member] |  |
Investment Securities Available-for-Sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 71,938 |
Investment Securities Available-for-Sale: Total, Unrealized Losses | (1,051) |
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 71,938 |
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses | (1,051) |
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value |  |
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses |  |
Asset-backed securities [Member] |  |
Investment Securities Available-for-Sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value | 1,389 | 3,083
Investment Securities Available-for-Sale: Total, Unrealized Losses | (2) | (41)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value | 840 | 622
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses |  |
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value | 549 | 2,461
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses | $ (2) | (41)
Federal agency obligations [Member] |  |
Investment Securities Available-for-Sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value |  | 8,978
Investment Securities Available-for-Sale: Total, Unrealized Losses |  | (65)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value |  | 8,975
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses |  | (65)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value |  | 3
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses |  |
Corporate bonds and notes [Member] |  |
Investment Securities Available-for-Sale: |  |
Investment Securities Available-for-Sale: Total, Fair Value |  | 3,928
Investment Securities Available-for-Sale: Total, Unrealized Losses |  | (52)
Investment Securities Available-for-Sale: Less than 12 Months, Fair Value |  | 3,928
Investment Securities Available-for-Sale: Less than 12 Months, Unrealized Losses |  | (52)
Investment Securities Available-for-Sale: 12 Months or Longer, Fair Value |  |
Investment Securities Available-for-Sale: 12 Months or Longer, Unrealized Losses |  |

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- Definition This item represents the excess of amortized cost basis over fair value of securities in a loss position and which are categorized as held-to-maturity. + References No definition available. + Details
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- Definition Investment securities held-to-maturity: less than 12 months, unrealized losses. + References No definition available. + Details
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- Definition Amount of accumulated pre-tax unrealized loss on investments in held-to-maturity securities that have been in a loss position for twelve months or longer. + References No definition available. + Details
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position. + 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 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 + Details
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for less than 12 months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563 + Details
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity), in continuous unrealized loss position for 12 months or longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27337-111563 + Details
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