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Debt Securities Held-to-Maturity - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2021 USD ($) security | Dec. 31, 2020 USD ($) security | Dec. 31, 2019 USD ($)
Schedule of Investments [Abstract] |  |  |
Held-to-maturity securities sold | $ 0 | $ 0 | $ 0
Held-to-maturity securities pledged to secure borrowings and deposits | $ 2,100,000 | $ 5,900,000 |
Held-to-maturity securities unrealized loss position | security | 0 | 0 |
Accrued interest receivable associated with held-to-maturity securities | $ 16,000 |  |

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- Definition Debt Securities, Held To Maturity, Unrealized Loss Position, Number of Positions + References No definition available. + Details
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- Definition Held-to-maturity Securities Pledged as Collateral on Borrowings and Deposits + References No definition available. + Details
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- Definition Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5C -URI http://asc.fasb.org/extlink&oid=123581744&loc=SL121698325-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=124255206&loc=SL120267845-210446 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 3A -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL120267960-210447 + Details
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- Definition Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity), sold. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27405-111563 + Details
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- References No definition available. + Details
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