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Loans (Revolving Loans Converted to Term) (Details) - Revolving Loans Converted to Term - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Remaining Revolving Loans Converted to Term During Period | $ 67,441 | $ 172,955
Commercial Portfolio Segment [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Remaining Revolving Loans Converted to Term During Period | 34,247 | 40,099
Commercial and Industrial Total Energy Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Remaining Revolving Loans Converted to Term During Period | 3,295 | 54,996
Commercial Real Estate, Buildings, Land and Other [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Remaining Revolving Loans Converted to Term During Period | 12,174 | 68,337
Construction Loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Remaining Revolving Loans Converted to Term During Period | 3,144 | 0
Total consumer real estate loans [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Remaining Revolving Loans Converted to Term During Period | 5,381 | 1,156
Consumer Loan [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Remaining Revolving Loans Converted to Term During Period | $ 9,200 | $ 8,367

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