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Derivatives - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024
Derivative [Line Items] |  |  |
Termination value of derivatives in net liability position | $ 0.0 |  |
Interest rate lock commitments notional value |  |  |
Derivative [Line Items] |  |  |
Notional amount | 38.9 |  | $ 20.0
Forward contract notional value |  |  |
Derivative [Line Items] |  |  |
Notional amount | 38.2 |  | 29.2
Not designated as hedging instrument | Interest rate swap |  |  |
Derivative [Line Items] |  |  |
Notional amount | 867.0 |  | 840.9
Derivative fee income from non-designated hedges | 0.2 | $ 0.9 |
Fair value hedges | Designated as hedging instrument | Interest rate swap |  |  |
Derivative [Line Items] |  |  |
Notional amount | 346.7 |  | 348.5
Cumulative fair value hedge adjustment | (24.7) |  | $ (31.2)
Cash flow hedges | Designated as hedging instrument |  |  |
Derivative [Line Items] |  |  |
Notional amount | 200.0 |  |
Reclassification of accumulated other comprehensive loss during the next 12 months | $ 0.9 |  |

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- Definition The aggregate fair value of assets needed to immediately settle the derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H + Details
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- Definition The estimated value of gains (losses), net anticipated to be transferred in the future from accumulated other comprehensive income into earnings. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480870/815-30-50-6 + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4C Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 4CC -SubTopic 10 -Topic 815 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4CC + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480237/815-40-50-5 + Details
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