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Note 12 - Fair Values (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] |
|  |  |  |  |  | Quoted |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Prices in |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Active |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Markets |  |  | Significant |  |  |  |  |
|  |  |  |  |  | for |  |  | Other |  |  | Significant |
|  |  |  |  |  | Identical |  |  | Observable |  |  | Unobservable |
|  |  |  |  |  | Assets |  |  | Inputs |  |  | Inputs |
(Dollars in thousands) |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Available for sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 606,782 |  |  | $ | 0 |  |  | $ | 606,782 |  |  | $ | 0 |
Mortgage-backed securities |  |  | 23,673 |  |  |  | 0 |  |  |  | 23,673 |  |  |  | 0 |
Municipal general obligation bonds |  |  | 192,575 |  |  |  | 0 |  |  |  | 192,197 |  |  |  | 378 |
Municipal revenue bonds |  |  | 31,608 |  |  |  | 0 |  |  |  | 31,608 |  |  |  | 0 |
Other investments |  |  | 500 |  |  |  | 0 |  |  |  | 500 |  |  |  | 0 |
Interest rate swaps |  |  | 25,103 |  |  |  | 0 |  |  |  | 25,103 |  |  |  | 0 |
Total assets |  | $ | 880,241 |  |  | $ | 0 |  |  | $ | 879,863 |  |  | $ | 378 |
Interest rate swaps |  |  | 25,515 |  |  |  | 0 |  |  |  | 25,515 |  |  |  | 0 |
Total liabilities |  | $ | 25,515 |  |  | $ | 0 |  |  | $ | 25,515 |  |  | $ | 0 |
|  |  |  |  |  | Quoted |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Prices in |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Active |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Markets |  |  | Significant |  |  |  |  |
|  |  |  |  |  | for |  |  | Other |  |  | Significant |
|  |  |  |  |  | Identical |  |  | Observable |  |  | Unobservable |
|  |  |  |  |  | Assets |  |  | Inputs |  |  | Inputs |
(Dollars in thousands) |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Available for sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agency debt obligations |  | $ | 495,581 |  |  | $ | 0 |  |  | $ | 495,581 |  |  | $ | 0 |
Mortgage-backed securities |  |  | 25,368 |  |  |  | 0 |  |  |  | 25,368 |  |  |  | 0 |
Municipal general obligation bonds |  |  | 180,170 |  |  |  | 0 |  |  |  | 179,777 |  |  |  | 393 |
Municipal revenue bonds |  |  | 28,733 |  |  |  | 0 |  |  |  | 28,733 |  |  |  | 0 |
Other investments |  |  | 500 |  |  |  | 0 |  |  |  | 500 |  |  |  | 0 |
Interest rate swaps |  |  | 26,793 |  |  |  | 0 |  |  |  | 26,793 |  |  |  | 0 |
Total assets |  | $ | 757,145 |  |  | $ | 0 |  |  | $ | 756,752 |  |  | $ | 393 |
Interest rate swaps |  |  | 27,050 |  |  |  | 0 |  |  |  | 27,050 |  |  |  | 0 |
Total liabilities |  | $ | 27,050 |  |  | $ | 0 |  |  | $ | 27,050 |  |  | $ | 0 |
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block] |
|  |  |  |  |  | Quoted |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Prices in |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Active |  |  | Significant |  |  |  |  |
|  |  |  |  |  | Markets for |  |  | Other |  |  | Significant |
|  |  |  |  |  | Identical |  |  | Observable |  |  | Unobservable |
|  |  |  |  |  | Assets |  |  | Inputs |  |  | Inputs |
(Dollars in thousands) |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Collateral dependent loans |  | $ | 1,529 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 1,529 |
|  |  |  |  |  | Quoted |  |  |  |  |  |  |  |  |
|  |  |  |  |  | Prices |  |  |  |  |  |  |  |  |
|  |  |  |  |  | in Active |  |  | Significant |  |  |  |  |
|  |  |  |  |  | Markets for |  |  | Other |  |  | Significant |
|  |  |  |  |  | Identical |  |  | Observable |  |  | Unobservable |
|  |  |  |  |  | Assets |  |  | Inputs |  |  | Inputs |
(Dollars in thousands) |  | Total |  |  | (Level 1) |  |  | (Level 2) |  |  | (Level 3) |
Collateral dependent loans |  | $ | 2,173 |  |  | $ | 0 |  |  | $ | 0 |  |  | $ | 2,173 |

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- Definition Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique used to measure similar asset in prior period by class of asset or liability on non-recurring basis. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (bbb) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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