Note 5 - Loans and Leases - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Notes receivable, gross	$ 2,024,315	$ 1,912,605
Real Estate [Member]
Notes receivable, gross	2,306	1,781
Other Collateral [Member]
Notes receivable, gross	116	111
Collateral Pledged [Member]
Notes receivable, gross	2,422	1,892
Commercial Portfolio Segment [Member] | Commercial [Member]
Notes receivable, gross	239,736	220,526
Commercial Portfolio Segment [Member] | Commercial [Member] | Real Estate [Member]
Notes receivable, gross	0	0
Commercial Portfolio Segment [Member] | Commercial [Member] | Other Collateral [Member]
Notes receivable, gross	45	49
Commercial Portfolio Segment [Member] | Commercial [Member] | Collateral Pledged [Member]
Notes receivable, gross	45	49
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Notes receivable, gross	499,441	416,521
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Real Estate [Member]
Notes receivable, gross	543	591
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Other Collateral [Member]
Notes receivable, gross	0	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Collateral Pledged [Member]
Notes receivable, gross	543	591
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Notes receivable, gross	359,640	340,808
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Real Estate [Member]
Notes receivable, gross	1,038	550
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Other Collateral [Member]
Notes receivable, gross	0	0
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Collateral Pledged [Member]
Notes receivable, gross	1,038	550
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Notes receivable, gross	52,696	53,973
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Real Estate [Member]
Notes receivable, gross	128	130
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Other Collateral [Member]
Notes receivable, gross	0	0
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Collateral Pledged [Member]
Notes receivable, gross	128	130
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Notes receivable, gross	71,189	70,195
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Real Estate [Member]
Notes receivable, gross	217	218
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Other Collateral [Member]
Notes receivable, gross	0	0
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Collateral Pledged [Member]
Notes receivable, gross	217	218
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Recourse [Member]
Notes receivable, gross	9,256	10,139
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Nonrecourse [Member]
Notes receivable, gross	37,326	43,852
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Real Estate [Member] | Recourse [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Real Estate [Member] | Nonrecourse [Member]
Notes receivable, gross	0	0
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Other Collateral [Member] | Recourse [Member]
Notes receivable, gross	27
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Other Collateral [Member] | Nonrecourse [Member]
Notes receivable, gross	44	62
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Collateral Pledged [Member] | Recourse [Member]
Notes receivable, gross	27
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Collateral Pledged [Member] | Nonrecourse [Member]
Notes receivable, gross	44	62
Residential Portfolio Segment [Member] | Real Estate Loan [Member]
Notes receivable, gross	516,067	515,489
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Real Estate [Member]
Notes receivable, gross	380	292
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Other Collateral [Member]
Notes receivable, gross	0	0
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Collateral Pledged [Member]
Notes receivable, gross	$ 380	$ 292