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Subordinated Notes (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Aug. 20, 2020
Subordinated Borrowing [Line Items] |  |  |
Basis spread on variable rate (percent) | 1.74% |  |
Long-term Debt, Gross |  |  | $ 175.0
Debt Instrument, Interest Rate, Stated Percentage |  |  | 4.50%
Debt Issuance Costs, Gross |  |  | $ 2.4
Subordinated debt |  |  |
Subordinated Borrowing [Line Items] |  |  |
Basis spread on variable rate (percent) | 4.39% |  |
Long-term Debt | $ 174.1 | $ 173.7 |
Trust I |  |  |
Subordinated Borrowing [Line Items] |  |  |
Preferred securities issued | 15.0 |  |
Junior subordinated notes |  |  |
Subordinated Borrowing [Line Items] |  |  |
Junior subordinated debt purchased by Trust I | $ 15.5 |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-4 + Details
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