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Derivatives, Hedging Activities and Financial Instruments with Off-Balance Sheet Risk - Commitments (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023
Company's contractual commitments due to letters of credit |  |
Total letters of credit | $ 27,831,000 | $ 31,112,000
Allowance for credit loss on unfunded commitments | 2,500,000 |
Increase In allowance for credit loss on unfunded commitments | 2,000 |
Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 740,000 | 735,000
Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 27,091,000 | 30,377,000
Commitments to Extend Credit to Borrowers |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 27,764,000 | 31,045,000
Commitments to Extend Credit to Borrowers | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 740,000 | 735,000
Commitments to Extend Credit to Borrowers | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 27,024,000 | 30,310,000
Commitments to Extend Credit to Borrowers | Financial Standby Letter of Credit |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 16,428,000 | 16,794,000
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 | 188,000 | 173,000
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 | 16,240,000 | 16,621,000
Commitments to Extend Credit to Borrowers | Performance Guarantee |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 11,336,000 | 14,251,000
Commitments to Extend Credit to Borrowers | Performance Guarantee | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 552,000 | 562,000
Commitments to Extend Credit to Borrowers | Performance Guarantee | Variable |  |
Company's contractual commitments due to letters of credit |  |
Total letters of credit | 10,784,000 | 13,689,000
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 | 777,536,000 | 835,265,000
Unused lines of Credit | Fixed |  |
Company's contractual commitments due to letters of credit |  |
Loan commitments | 153,788,000 | 140,305,000
Unused lines of Credit | Variable |  |
Company's contractual commitments due to letters of credit |  |
Loan commitments | $ 623,748,000 | $ 694,960,000

X
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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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