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Note 5 - Loans - Components of Loans in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Loans | $ 18,254,024 | $ 16,342,479 |
Less: Allowance for loan losses | (146,485) | (136,157) | $ (166,538)
Unamortized deferred loan fees, net | (6,641) | (4,321) |
Loans, net | 18,100,898 | 16,202,001 |
Commercial Portfolio Segment [Member] |  |  |
Loans | 3,318,778 | 2,982,399 |
Less: Allowance for loan losses | (49,435) | (43,394) | (68,742)
Real Estate Construction Portfolio Segment [Member] |  |  |
Loans | 559,372 | 611,031 |
Less: Allowance for loan losses | (10,417) | (6,302) | (30,854)
Commercial Real Estate Portfolio Segment [Member] |  |  |
Loans | 8,793,685 | 8,143,272 |
Less: Allowance for loan losses | (68,366) | (61,081) | (49,205)
Residential Portfolio Segment [Member] |  |  |
Loans | 5,252,952 | 4,182,006 |
Equity Lines Portfolio Segment [Member] |  |  |
Loans | 324,548 | 419,487 |
Installment and Other Loans [Member ] |  |  |
Loans | 4,689 | 4,284 |
Less: Allowance for loan losses | $ (35) | $ (1) | $ 0

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