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Securities (Narrative) (Details) | 3 Months Ended
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Mar. 31, 2023 USD ($) security | Mar. 31, 2022 USD ($)
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Number of securities past due or on nonaccrual | 0 |
Securities evaluated for other than temporary impairment | 117 |
Proceeds from sale of securities available-for-sale | $ | $ 0 | $ 0
Debt Securities, Held-to-Maturity, Allowance for Credit Loss | $ | $ 0 |
Publicly Traded Domestic Corporations [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Securities evaluated for other than temporary impairment | 9 |
U.S. Agency Obligations [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Securities evaluated for other than temporary impairment | 54 |
Municipals [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Securities evaluated for other than temporary impairment | 54 |
Non-rated [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Securities evaluated for other than temporary impairment | 1 |
S&P Rated AAA [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Securities evaluated for other than temporary impairment | 45 |
S&P Rated AA [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Securities evaluated for other than temporary impairment | 64 |
S&P Rated A [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Securities evaluated for other than temporary impairment | 6 |
S&P Rated BBB [Member] |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |
Securities evaluated for other than temporary impairment | 1 |

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- Definition Amount of allowance for credit loss for 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 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aaa) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124255206&loc=SL82895884-210446 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -Subparagraph (f) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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