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Investment Securities - Additional Information (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 USD ($) Security | Mar. 31, 2021 Security | Dec. 31, 2021 USD ($)
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Number of available-for-sale securities in unrealized loss position less than 12 months | 57 |  |
Number of available-for-sale securities in unrealized loss position 12 months or greater | 4 |  |
Sales of available-for-sale securities | 0 | 0 |
Debt Securities, Available-for-sale | $ | $ 45,911 |  | $ 48,557
Collateral Pledged |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Debt Securities, Available-for-sale | $ | $ 2,500 |  | 2,800
Government Agency Securities |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Number of available-for-sale securities in unrealized loss position less than 12 months | 4 |  |
U.S. Treasury Strip Bonds |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Number of available-for-sale securities in unrealized loss position less than 12 months | 5 |  |
Debt Securities, Available-for-sale | $ | $ 4,677 |  | 5,050
Government Agency Mortgage-Backed Securities |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Number of available-for-sale securities in unrealized loss position less than 12 months | 36 |  |
Debt Securities, Available-for-sale | $ | $ 19,015 |  | 21,339
Municipal Securities - Tax Exempt |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Number of available-for-sale securities in unrealized loss position less than 12 months | 3 |  |
Debt Securities, Available-for-sale | $ | $ 488 |  | 536
Corporate Securities |  |  |
Schedule Of Available For Sale And Held To Maturity Securities [Line Items] |  |  |
Number of available-for-sale securities in unrealized loss position less than 12 months | 13 |  |
Debt Securities, Available-for-sale | $ | $ 9,525 |  | $ 9,300

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=124260329&loc=d3e26610-111562 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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