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Note 6 - Goodwill and Identifiable Intangible Assets (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | At September 30, 2025 |  |  | At December 31, 2024 |
|  | (In thousands) |
Goodwill |  | $ | 121,673 |  |  | $ | 121,673 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | At September 30, 2025 |  |  | At December 31, 2024 |
|  | Gross |  |  |  |  |  |  | Gross |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Carrying |  |  | Accumulated |
|  | Amount |  |  | Amortization |  |  | Amount |  |  | Amortization |
|  | (In thousands) |
Core deposit intangibles |  | $ | 56,808 |  |  | $ | (56,808 | ) |  | $ | 56,808 |  |  | $ | (56,683 | )
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
|  | Total |
|  | Core |
|  | Deposit |
|  | Intangibles |
|  | (In thousands) |
For the nine months ended September 30, 2025 (actual) |  | $ | 125 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name Accounting Standards Codification -Section 55 -Paragraph 40 -SubTopic 30 -Topic 350 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 + Details
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