Note 3 - Loans and Allowance for Credit Losses - Components of Loan Portfolio (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Loans	$ 4,821,888	$ 4,600,781
Percent of portfolio	100.00%	100.00%
Period increase (decrease)	4.80%
Commercial Portfolio Segment [Member]
Loans	$ 3,918,662	$ 3,707,304
Percent of portfolio	81.30%	80.60%
Period increase (decrease)	5.70%
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]
Loans	$ 1,374,522	$ 1,287,308
Percent of portfolio	28.50%	28.00%
Period increase (decrease)	6.80%
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member]
Loans	$ 117,373	$ 66,936
Percent of portfolio	2.40%	1.50%
Period increase (decrease)	75.40%
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member]
Loans	$ 778,869	$ 748,837
Percent of portfolio	16.20%	16.30%
Period increase (decrease)	4.00%
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member]
Loans	$ 1,110,674	$ 1,128,404
Percent of portfolio	23.00%	24.50%
Period increase (decrease)	(1.60%)
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member]
Loans	$ 537,224	$ 475,819
Percent of portfolio	11.20%	10.30%
Period increase (decrease)	12.90%
Retail Portfolio Segment [Member]
Loans	$ 903,226	$ 893,477
Percent of portfolio	18.70%	19.40%
Period increase (decrease)	1.10%
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member]
Loans	$ 790,857	$ 827,597
Percent of portfolio	16.40%	18.00%
Period increase (decrease)	(4.40%)
Retail Portfolio Segment [Member] | Other Consumer Loans [Member]
Loans	$ 112,369	$ 65,880
Percent of portfolio	2.30%	1.40%
Period increase (decrease)	70.60%