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Derivatives - Carrying Value of Hedging Assets (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Derivative [Line Items] |  |
Amortized Cost Basis | $ 537,043 | $ 550,288
Hedged Asset | 436,459 | 440,297
Basis Adjustment | 269 | 5,625
Fixed rate mortgages |  |
Derivative [Line Items] |  |
Amortized Cost Basis | 478,727 | 491,018
Hedged Asset | 386,459 | 390,297
Basis Adjustment | (347) | 4,055
Fixed rate bonds |  |
Derivative [Line Items] |  |
Amortized Cost Basis | 58,316 | 59,270
Hedged Asset | 50,000 | 50,000
Basis Adjustment | $ 616 | $ 1,570

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- Definition Amount of asset hedged in portfolio layer hedging relationship, expected to be remaining at end of hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4EEE -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4EEE + Details
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- Definition Amount of cumulative increase (decrease) in fair value of hedged asset in fair value hedge, attributable to hedged risk, in portfolio layer hedging relationship. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 181 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480401/815-10-55-181 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4EEE -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4EEE + Details
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- Definition Amortized cost of closed portfolio of financial asset used to designate hedging relationship in which hedged item is expected to be outstanding for designated hedged period. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 181 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480401/815-10-55-181 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4EEE -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4EEE + Details
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