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Note 6 - Loans and the Allowance for Credit Losses - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Gross loans | $ 8,206,343 | $ 8,280,482
Net deferred loan fees | (5,209) | (5,672)
Total loans receivable | 8,201,134 | 8,274,810
Commercial Portfolio Segment [Member] |  |
Gross loans | 1,492,920 | 1,532,730
Commercial Real Estate Portfolio Segment [Member] |  |
Gross loans | 5,837,671 | 5,880,679
Commercial Construction Portfolio Segment [Member] |  |
Gross loans | 617,593 | 616,246
Residential Portfolio Segment [Member] |  |
Gross loans | 256,555 | 249,691
Consumer Portfolio Segment [Member] |  |
Gross loans | $ 1,604 | $ 1,136

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