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Loans Loans - Non-Accrual Loans, Segregated by Class of Loans and Year of Origination (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Non-accrual loans | $ 67,175 | $ 37,833
Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 26,586 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 464 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 380 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 841 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 7,958 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 3,971 |
Financing Receivable, Revolving | 26,426 |
Financing Receivable, Revolving, Converted to Term Loan | 549 |
Commercial Portfolio Segment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,391,552 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 877,000 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 528,835 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 396,428 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 193,707 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 234,603 |
Financing Receivable, Revolving | 2,152,870 |
Non-accrual loans | 27,326 | 18,130
Commercial Portfolio Segment [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 | 359 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 84 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 747 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,812 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,068 |
Financing Receivable, Revolving | 21,924 |
Financing Receivable, Revolving, Converted to Term Loan | 332 |
Commercial and Industrial Total Energy Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 331,902 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 72,578 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 79,911 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 4,162 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 7,237 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 4,874 |
Financing Receivable, Revolving | 497,025 |
Non-accrual loans | 14,200 | 15,224
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 | 8,148 |
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 | 56 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,348 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 4,502 |
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 | 1,217,271 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,776,671 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,414,317 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 871,262 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 568,451 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,012,988 |
Financing Receivable, Revolving | 228,252 |
Non-accrual loans | 23,112 | 3,552
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 | 18,438 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 105 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 296 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 0 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,463 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,810 |
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 | 419,819 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 555,411 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 369,185 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 47,871 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 305 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,638 |
Financing Receivable, Revolving | 150,437 |
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 | 2,537 | 927
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 | 38 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 2,335 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 93 |
Financing Receivable, Revolving | 0 |
Financing Receivable, Revolving, Converted to Term Loan | 71 |
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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