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Investments Securities - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2022 USD ($) bill investment security | Dec. 31, 2021 USD ($) security investment
Debt Securities, Held-to-Maturity, Nonaccrual [Line Items] |  |
Investment securities with amortized cost pledged to secure public deposits | $ 37,800,000 | $ 36,000,000
Purchase of securities | $ 134,912,000 | $ 117,493,000
Number of investment securities sold | investment | 0 | 0
Number of securities in unrealized loss position | security | 6 | 4
Securities other than temporarily impaired | $ 0 |
US Treasury Bill Securities |  |
Debt Securities, Held-to-Maturity, Nonaccrual [Line Items] |  |
Number of securities purchased | bill | 5 |
Purchase of securities | $ 135,000,000 |
Amount of securities matured | $ 70,000,000 |

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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
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