Note 5 - Loans and Leases - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Notes receivable, gross	$ 1,729,873	$ 1,687,137
Real Estate [Member]
Notes receivable, gross	4,199	3,214
Other Collateral [Member]
Notes receivable, gross	2,690	94
Collateral Pledged [Member]
Notes receivable, gross	6,889	3,308
Commercial Portfolio Segment [Member] | Commercial [Member]
Notes receivable, gross	154,158	152,640
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	2,685	55
Commercial Portfolio Segment [Member] | Commercial [Member] | Collateral Pledged [Member]
Notes receivable, gross	2,685	55
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Notes receivable, gross	355,024	337,671
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Real Estate [Member]
Notes receivable, gross	724	252
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	724	252
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Notes receivable, gross	274,762	278,293
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Real Estate [Member]
Notes receivable, gross	2,404	2,250
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	2,404	2,250
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Notes receivable, gross	54,558	56,640
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Real Estate [Member]
Notes receivable, gross	56	70
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	56	70
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Notes receivable, gross	57,188	52,348
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Real Estate [Member]
Notes receivable, gross	402	364
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	402	364
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Nonrecourse [Member]
Notes receivable, gross	92,756	112,595
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] | Nonrecourse [Member]
Notes receivable, gross	5	39
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Collateral Pledged [Member] | Nonrecourse [Member]
Notes receivable, gross	5	39
Consumer Portfolio Segment [Member] | Other Loan [Member]
Notes receivable, gross	23,499	16,500
Consumer Portfolio Segment [Member] | Other Loan [Member] | Real Estate [Member]
Notes receivable, gross	20
Consumer Portfolio Segment [Member] | Other Loan [Member] | Other Collateral [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Other Loan [Member] | Collateral Pledged [Member]
Notes receivable, gross	20
Residential Portfolio Segment [Member] | Real Estate Loan [Member]
Notes receivable, gross	481,966	465,010
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Real Estate [Member]
Notes receivable, gross	593	278
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	$ 593	$ 278