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Note 4 - Loans - Components of Loans in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Loans	$ 19,375,955	$ 19,548,140
Less: Allowance for loan losses	(161,765)	(154,562)	$ (146,485)
Unamortized deferred loan fees, net	(10,541)	(10,720)
Loans, net	19,203,649	19,382,858
Loans held for sale	0	0
Commercial Portfolio Segment [Member]
Loans	3,098,004	3,305,048
Less: Allowance for loan losses	(57,796)	(53,791)	(49,435)
Real Estate Construction Portfolio Segment [Member]
Loans	319,649	422,647
Less: Allowance for loan losses	(8,185)	(8,180)	(10,417)
Commercial Real Estate Portfolio Segment [Member]
Loans	10,033,830	9,729,581
Less: Allowance for loan losses	(79,597)	(74,428)	(68,366)
Residential Portfolio Segment [Member]
Loans	5,689,097	5,838,747
Equity Lines Portfolio Segment [Member]
Loans	229,995	245,919
Installment and Other Loans [Member ]
Loans	5,380	6,198
Less: Allowance for loan losses	$ (6)	$ (23)	$ (35)

X

- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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