Note 6 - Loans and Allowance for Credit Losses - Schedule of Total Loans Outstanding by Portfolio Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 3,992,534	$ 2,759,583
Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,787,277	1,849,267
Consumer Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss		910,316
Commercial Portfolio Segment [Member] | Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	666,727	562,180
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,996,243	1,210,114
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Construction, Land, and Development [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	294,677	124,034
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Multifamily Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	363,123	245,103
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Non-Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	967,025	569,354
Commercial Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Owner Occupied Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	371,418	271,623
Agricultural Real Estate Portfolio Segment [Member] | Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	124,307	76,973
Agricultural Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	61,299	40,832
Agricultural Real Estate Portfolio Segment [Member] | Commercial Borrower [Member] | Production Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	63,008	36,141
Residential Portfolio Segment [Member] | Consumer Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,161,135	881,013
Residential Portfolio Segment [Member] | Consumer Borrower [Member] | Real Estate, First Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	921,019	697,900
Residential Portfolio Segment [Member] | Consumer Borrower [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	33,547	28,979
Residential Portfolio Segment [Member] | Consumer Borrower [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	162,509	118,315
Residential Portfolio Segment [Member] | Consumer Borrower [Member] | Real Estate, Junior Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	44,060	35,819
Consumer Portfolio Segment [Member] | Consumer Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,205,257	910,316
Consumer Portfolio Segment [Member] | Consumer Borrower [Member] | Consumer, Other [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 44,122	$ 29,303