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Allowance for Credit Losses - Schedule of Provisions for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Provision (credit) for loan and lease losses: |  |  |  |
Provision (credit) for loan and lease losses excluding unfunded commitments | $ 8,869 | $ 9,374 | $ 23,234 | $ 27,070
Merger Day 1 CECL provision | 69,487 | 0 | 69,487 | 0
Total provision (credit) for credit losses | 87,528 | 4,660 | 100,514 | 17,607
Unfunded commitments |  |  |  |
Provision (credit) for loan and lease losses: |  |  |  |
Merger Day 1 unfunded commitments provision | 8,415 | 0 | 8,415 | 0
Provision (credit) for unfunded commitments | 725 | (4,542) | (669) | (9,208)
Provision for other credit losses | 9,140 | (4,542) | 7,746 | (9,208)
Investment securities available-for-sale |  |  |  |
Provision (credit) for loan and lease losses: |  |  |  |
Provision for other credit losses | 32 | (172) | 47 | (255)
Commercial real estate |  |  |  |
Provision (credit) for loan and lease losses: |  |  |  |
Provision (credit) for loan and lease losses excluding unfunded commitments | 5,040 | (6,971) | 7,507 | (1,804)
Merger Day 1 CECL provision | 31,820 | 0 | 31,820 | 0
Commercial |  |  |  |
Provision (credit) for loan and lease losses: |  |  |  |
Provision (credit) for loan and lease losses excluding unfunded commitments | 6,637 | 16,632 | 18,224 | 29,511
Merger Day 1 CECL provision | 17,891 | 0 | 17,891 | 0
Consumer |  |  |  |
Provision (credit) for loan and lease losses: |  |  |  |
Provision (credit) for loan and lease losses excluding unfunded commitments | (2,808) | (287) | (2,497) | (637)
Merger Day 1 CECL provision | $ 19,776 | $ 0 | $ 19,776 | $ 0

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph c -Publisher SEC + Details
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