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Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Commitments (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Company's contractual commitments due to letters of credit |  |
Total letters of credit | $ 26,698,000 | $ 27,336,000
Allowance for credit loss on unfunded commitments | 2,000,000.0 |
Increase In allowance for credit loss on unfunded commitments | 115,000 | 1,900,000
Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 729,000 | 740,000
Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 25,969,000 | 26,596,000
Commitments to Extend Credit to Borrowers |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 26,631,000 | 27,269,000
Commitments to Extend Credit to Borrowers | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 729,000 | 740,000
Commitments to Extend Credit to Borrowers | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 25,902,000 | 26,529,000
Commitments to Extend Credit to Borrowers | Financial Standby Letter of Credit |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 15,943,000 | 16,510,000
Commitments to Extend Credit to Borrowers | Financial Standby Letter of Credit | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 177,000 | 188,000
Commitments to Extend Credit to Borrowers | Financial Standby Letter of Credit | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 15,766,000 | 16,322,000
Commitments to Extend Credit to Borrowers | Performance Guarantee |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 10,688,000 | 10,759,000
Commitments to Extend Credit to Borrowers | Performance Guarantee | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 552,000 | 552,000
Commitments to Extend Credit to Borrowers | Performance Guarantee | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 10,136,000 | 10,207,000
Commitments to Extend Credit Nonborrowers | Performance Guarantee |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 67,000 | 67,000
Commitments to Extend Credit Nonborrowers | Performance Guarantee | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 67,000 | 67,000
Unused lines of Credit |  |
Company's contractual commitments due to letters of credit |  |
Loan commitments | 761,291,000 | 779,815,000
Unused lines of Credit | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Loan commitments | 148,686,000 | 163,282,000
Unused lines of Credit | Variable |  |
Company's contractual commitments due to letters of credit |  |
Loan commitments | $ 612,605,000 | $ 616,533,000

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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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