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Loans Loans - Non-Accrual Loans, Segregated by Class of Loans and Year of Origination (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Non-accrual loans | $ 71,515 | $ 60,907
Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 5,279 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 21,871 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 3,754 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 6,597 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,029 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 9,936 |
Financing Receivable, Revolving | 5,680 |
Financing Receivable, Revolving, Converted to Term Loan | 17,369 |
Commercial Portfolio Segment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 878,780 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 873,069 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 710,133 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 462,165 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 346,689 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 372,114 |
Financing Receivable, Revolving | 2,386,818 |
Non-accrual loans | 25,446 | 19,545
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 11 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 2,059 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 394 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 2,941 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 935 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,719 |
Financing Receivable, Revolving | 2,178 |
Financing Receivable, Revolving, Converted to Term Loan | 14,209 |
Commercial and Industrial Total Energy Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 227,603 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 35,251 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 58,965 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 70,932 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 4,612 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 10,951 |
Financing Receivable, Revolving | 521,034 |
Non-accrual loans | 10,293 | 11,500
Commercial and Industrial Total Energy Loans [Member] | Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 5,268 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 56 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,321 |
Financing Receivable, Revolving | 3,502 |
Financing Receivable, Revolving, Converted to Term Loan | 146 |
Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 408,729 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,560,879 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,745,471 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 1,302,714 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 798,561 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,390,645 |
Financing Receivable, Revolving | 243,671 |
Non-accrual loans | 30,012 | 22,420
Commercial Real Estate Buildings Land And Other Loans [Member] | Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 19,812 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 3,360 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,656 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 3,184 |
Financing Receivable, Revolving | 0 |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Construction Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 242,949 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 440,037 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 598,799 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 289,714 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 28,028 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,353 |
Financing Receivable, Revolving | 171,536 |
Non-accrual loans | 0 | 0
Construction Loans [Member] | Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 0 |
Financing Receivable, Revolving, Converted to Term Loan | 0 |
Total consumer real estate loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Non-accrual loans | 5,764 | 7,442
Total consumer real estate loans [Member] | Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 38 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,712 |
Financing Receivable, Revolving | 0 |
Financing Receivable, Revolving, Converted to Term Loan | 3,014 |
Consumer Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Non-accrual loans | 0 | $ 0
Consumer Loan [Member] | Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 0 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 0 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 0 |
Financing Receivable, Revolving, Converted to Term Loan | $ 0 |

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