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Loans and Allowance for Credit Losses - Allowance for Credit Loss Activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | $ 98,580 | $ 106,150 | $ 101,494 | $ 107,966 | $ 107,966
Provision for credit losses on loans | 1,989 | 308 | 206 | 4,693 |
Charge-offs | (3,053) | (2,440) | (5,593) | (10,223) | (12,188)
Recoveries | 639 | 303 | 2,048 | 1,885 |
Net Charge-offs | (2,414) | (2,137) | (3,545) | (8,338) |
Balance at End of Period | 98,155 | 104,321 | 98,155 | 104,321 | 101,494
Commercial loans | Commercial real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 30,335 | 37,077 | 30,254 | 37,886 | 37,886
Provision for credit losses on loans | 3,053 | (1,441) | 2,999 | 2,498 |
Charge-offs | 0 | 0 | 0 | (5,205) | (5,205)
Recoveries | 0 | 1 | 135 | 458 |
Net Charge-offs | 0 | 1 | 135 | (4,747) |
Balance at End of Period | 33,388 | 35,637 | 33,388 | 35,637 | 30,254
Commercial loans | Commercial and industrial |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 32,080 | 34,735 | 37,084 | 34,538 | 34,538
Provision for credit losses on loans | 376 | 2,184 | (4,424) | 2,715 |
Charge-offs | (1,971) | (1,308) | (2,399) | (2,436) | (2,436)
Recoveries | 146 | 113 | 370 | 907 |
Net Charge-offs | (1,825) | (1,195) | (2,029) | (1,529) |
Balance at End of Period | 30,631 | 35,724 | 30,631 | 35,724 | 37,084
Commercial loans | Commercial construction |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 6,468 | 5,347 | 4,893 | 5,382 | 5,382
Provision for credit losses on loans | (2,161) | (945) | (467) | (980) |
Charge-offs | 0 | 0 | (119) | 0 | 0
Recoveries | 9 | 0 | 9 | 0 |
Net Charge-offs | 9 | 0 | (110) | 0 |
Balance at End of Period | 4,316 | 4,402 | 4,316 | 4,402 | 4,893
Commercial loans | Business banking |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 11,461 | 10,883 | 10,681 | 12,858 | 12,858
Provision for credit losses on loans | 87 | 252 | 1,124 | (1,610) |
Charge-offs | (462) | (179) | (784) | (373) | (1,745)
Recoveries | 49 | 73 | 114 | 154 |
Net Charge-offs | (413) | (106) | (670) | (219) |
Balance at End of Period | 11,135 | 11,029 | 11,135 | 11,029 | 10,681
Consumer loans | Consumer real estate |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 15,527 | 15,376 | 15,776 | 14,663 | 14,663
Provision for credit losses on loans | 415 | 46 | 368 | 1,136 |
Charge-offs | (220) | (616) | (772) | (1,087) | (1,348)
Recoveries | 170 | 40 | 520 | 134 |
Net Charge-offs | (50) | (576) | (252) | (953) |
Balance at End of Period | 15,892 | 14,846 | 15,892 | 14,846 | 15,776
Consumer loans | Other consumer |  |  |  |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |  |  |  |
Balance at beginning of period | 2,709 | 2,732 | 2,806 | 2,639 | 2,639
Provision for credit losses on loans | 219 | 212 | 606 | 934 |
Charge-offs | (400) | (337) | (1,519) | (1,122) | (1,454)
Recoveries | 265 | 76 | 900 | 232 |
Net Charge-offs | (135) | (261) | (619) | (890) |
Balance at End of Period | $ 2,793 | $ 2,683 | $ 2,793 | $ 2,683 | $ 2,806

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- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
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- Definition Amount, excluding accrued interest, of increase in allowance for credit loss on financing receivable from recovery. 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 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
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