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Loans Loans - Non-Accrual Loans, Segregated by Class of Loans and Year of Origination (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Loans and Leases Receivable Disclosure [Line Items] |  |
Non-accrual loans | $ 35,125 | $ 53,713
Nonperforming Financial Instruments [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 6,895 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7,654 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 3,520 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,736 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,825 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 3,625 |
Financing Receivable, Revolving | 5,235 |
Financing Receivable, Revolving, Converted to Term Loan | 2,635 |
Commercial Portfolio Segment [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,027,153 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 852,191 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 582,273 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 289,898 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 167,930 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 232,809 |
Financing Receivable, Revolving | 2,318,394 |
Non-accrual loans | 11,170 | 22,582
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 | 98 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 3,520 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 3,507 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 1,491 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 653 |
Financing Receivable, Revolving | 108 |
Financing Receivable, Revolving, Converted to Term Loan | 1,793 |
Commercial and Industrial Total Energy Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 328,807 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 111,479 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 7,821 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 12,669 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 4,735 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 5,403 |
Financing Receivable, Revolving | 467,542 |
Non-accrual loans | 11,114 | 14,433
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 | 5,779 |
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 | 21 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 0 |
Financing Receivable, Revolving | 5,127 |
Financing Receivable, Revolving, Converted to Term Loan | 187 |
Paycheck Protection Program [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Non-accrual loans | 0 | 0
Paycheck Protection Program [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 |
Commercial Real Estate Buildings Land And Other Loans [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Financing Receivable, Year One, Originated, Current Fiscal Year | 1,173,006 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 1,548,499 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 1,118,143 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 895,947 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 478,947 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 1,100,358 |
Financing Receivable, Revolving | 96,082 |
Non-accrual loans | 11,806 | 15,297
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 | 1,116 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 7,556 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 0 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 229 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 313 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,592 |
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 | 315,359 |
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year | 663,001 |
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year | 182,566 |
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year | 114,018 |
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year | 631 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 2,205 |
Financing Receivable, Revolving | 253,781 |
Non-accrual loans | 0 | 948
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 | 1,035 | 440
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 | 0 |
Financing Receivable, Originated, More than Five Years before Current Fiscal Year | 380 |
Financing Receivable, Revolving | 0 |
Financing Receivable, Revolving, Converted to Term Loan | 655 |
Consumer Loan [Member] |  |
Loans and Leases Receivable Disclosure [Line Items] |  |
Non-accrual loans | 0 | $ 13
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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