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Loans - Loans Purchased and/or Sold During the Year by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | $ 0 | $ 1,502
Sales | 0 | 0
Commercial and Industrial Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | 0 | 0
Sales | 0 | 0
Commercial Real Estate Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | 0 | 1,502
Sales | 0 | 0
Agricultural Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | 0 | 0
Sales | 0 | 0
Leases |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | 0 | 0
Sales | 0 | 0
Consumer Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | 0 | 0
Sales | 0 | 0
Home Equity Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | 0 | 0
Sales | 0 | 0
Credit Cards |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | 0 | 0
Sales | 0 | 0
Residential Mortgage Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Purchases | 0 | 0
Sales | $ 0 | $ 0

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- Definition Amount excluding accrued interest, of increase in financing receivable from purchase. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 11 -Subparagraph (h) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-11 + Details
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