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Note 3 - Loans and Allowance for Credit Losses - Components of Loan Portfolio (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Loans	$ 4,553,018	$ 4,303,758
Percent of portfolio	100.00%	100.00%
Period increase (decrease)	5.80%
Commercial Portfolio Segment [Member]
Loans	$ 3,648,288	$ 3,415,299
Percent of portfolio	80.20%	79.40%
Period increase (decrease)	6.80%
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans	$ 1,312,774	$ 1,254,586
Percent of portfolio	28.80%	29.20%
Period increase (decrease)	4.60%
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Loans	$ 66,374	$ 74,753
Percent of portfolio	1.50%	1.70%
Period increase (decrease)	(11.20%)
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member]
Loans	$ 746,714	$ 717,667
Percent of portfolio	16.40%	16.70%
Period increase (decrease)	4.00%
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member]
Loans	$ 1,095,988	$ 1,035,684
Percent of portfolio	24.10%	24.10%
Period increase (decrease)	5.80%
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Loans	$ 426,438	$ 332,609
Percent of portfolio	9.40%	7.70%
Period increase (decrease)	28.20%
Retail Portfolio Segment [Member]
Loans	$ 904,730	$ 888,459
Percent of portfolio	19.80%	20.60%
Period increase (decrease)	1.80%
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans	$ 844,093	$ 837,406
Percent of portfolio	18.50%	19.50%
Period increase (decrease)	0.80%
Retail Portfolio Segment [Member] | Other Consumer Loans [Member]
Loans	$ 60,637	$ 51,053
Percent of portfolio	1.30%	1.10%
Period increase (decrease)	18.80%

X

- Definition

The percentage of increase or (decrease) during the period in loans and leases receivable net of deferred income.

+ References

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- Definition

Percentage, before allowance for credit loss, of financing receivable to total financing receivable.

+ References

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-Number 229
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- Definition

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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