Note 5 - Loans and Allowance for Credit Losses - Schedule of Loans Past Due (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 3,032,343	$ 2,759,583
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	48,026	8,596
Financial Asset, Not Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,977,020	2,747,458
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	6,309	2,789
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	988	601
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	139
Commercial Borrower [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,122,945	1,849,267
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	35,869	7,710
Commercial Borrower [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	2,081,281	1,840,366
Commercial Borrower [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	5,398	1,052
Commercial Borrower [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	397	0
Commercial Borrower [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	139
Commercial Borrower [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	606,245	562,180
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	3,065	6,595
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	600,976	554,602
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,807	844
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	397	0
Commercial Borrower [Member] | Commercial Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	139
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,431,443	1,210,114
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	32,734	1,115
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction, Land, and Development [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	173,629	124,034
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	25,005	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Multifamily Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	275,377	245,103
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Non-Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	686,071	569,354
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	5,217	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Owner Occupied Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	296,366	271,623
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	2,512	1,115
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	1,395,118	1,208,871
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Construction, Land, and Development [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	148,624	124,034
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Multifamily Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	275,377	245,103
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Non-Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	677,266	569,267
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Owner Occupied Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	293,851	270,467
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	3,591	128
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Construction, Land, and Development [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Multifamily Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Non-Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	3,588	87
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Owner Occupied Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	3	41
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Construction, Land, and Development [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Multifamily Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Non-Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Owner Occupied Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction, Land, and Development [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Multifamily Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Non-Owner Occupied [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Commercial Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Owner Occupied Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	85,257	76,973
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	70	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	45,821	40,832
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Production Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	39,436	36,141
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	70	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	85,187	76,893
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	45,821	40,832
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Production Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	39,366	36,061
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	80
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Production Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	80
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Production Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Land [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Commercial Borrower [Member] | Agricultural Real Estate Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Production Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	873,005	881,013
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	11,867	886
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, First Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	690,451	697,900
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	1,948	638
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	11,808	28,979
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	4,680	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	134,301	118,315
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	1,488	178
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Real Estate, Junior Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	36,445	35,819
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	3,751	70
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	859,732	878,006
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Real Estate, First Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	687,874	695,807
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	7,128	28,979
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	132,077	117,540
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Real Estate, Junior Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	32,653	35,680
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	823	1,567
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate, First Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	151	901
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	655	597
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Real Estate, Junior Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	17	69
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	583	554
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate, First Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	478	554
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	81	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Real Estate, Junior Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	24	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate, First Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction Loans [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Home Equity Loan [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Residential Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Real Estate, Junior Lien [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	909,398	910,316
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	12,157	886
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Consumer, Other [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	36,393	29,303
Financing Receivable, before Allowance for Credit Loss, Nonaccrual	290	0
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	895,739	907,092
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Not Past Due [Member] | Consumer, Other [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	36,007	29,086
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	911	1,737
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, 30 to 59 Days Past Due [Member] | Consumer, Other [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	88	170
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	591	601
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, 60 to 89 Days Past Due [Member] | Consumer, Other [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	8	47
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	0	0
Consumer Borrower [Member] | Consumer Portfolio Segment [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Consumer, Other [Member]
Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss	$ 0	$ 0