Note 5 - Loans and Leases - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Notes receivable, gross	$ 1,687,137	$ 1,565,920
Real Estate [Member]
Notes receivable, gross	3,214
Other Collateral [Member]
Notes receivable, gross	94
Collateral Pledged [Member]
Notes receivable, gross	3,308
Commercial Portfolio Segment [Member] \| Commercial [Member]
Notes receivable, gross	152,640	141,122
Commercial Portfolio Segment [Member] \| Commercial [Member] \| Real Estate [Member]
Notes receivable, gross	0
Commercial Portfolio Segment [Member] \| Commercial [Member] \| Other Collateral [Member]
Notes receivable, gross	55
Commercial Portfolio Segment [Member] \| Commercial [Member] \| Collateral Pledged [Member]
Notes receivable, gross	55
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member]
Notes receivable, gross	311,565	318,296
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member] \| Real Estate [Member]
Notes receivable, gross	252
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member] \| Other Collateral [Member]
Notes receivable, gross	0
Commercial Real Estate Portfolio Segment [Member] \| Non-owner Occupied [Member] \| Collateral Pledged [Member]
Notes receivable, gross	252
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member]
Notes receivable, gross	304,399	284,677
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Real Estate [Member]
Notes receivable, gross	2,250
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Other Collateral [Member]
Notes receivable, gross	0
Commercial Real Estate Portfolio Segment [Member] \| Owner Occupied [Member] \| Collateral Pledged [Member]
Notes receivable, gross	2,250
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member]
Notes receivable, gross	56,640	59,118
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Real Estate [Member]
Notes receivable, gross	70
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Other Collateral [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] \| Home Equity Loan [Member] \| Collateral Pledged [Member]
Notes receivable, gross	70
Consumer Portfolio Segment [Member] \| Home Equity Line of Credit [Member]
Notes receivable, gross	52,348	52,568
Consumer Portfolio Segment [Member] \| Home Equity Line of Credit [Member] \| Real Estate [Member]
Notes receivable, gross	364
Consumer Portfolio Segment [Member] \| Home Equity Line of Credit [Member] \| Other Collateral [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] \| Home Equity Line of Credit [Member] \| Collateral Pledged [Member]
Notes receivable, gross	364
Consumer Portfolio Segment [Member] \| Automobile Loan [Member] \| Nonrecourse [Member]
Notes receivable, gross	112,595	114,909
Consumer Portfolio Segment [Member] \| Automobile Loan [Member] \| Real Estate [Member] \| Nonrecourse [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] \| Automobile Loan [Member] \| Other Collateral [Member] \| Nonrecourse [Member]
Notes receivable, gross	39
Consumer Portfolio Segment [Member] \| Automobile Loan [Member] \| Collateral Pledged [Member] \| Nonrecourse [Member]
Notes receivable, gross	39
Residential Portfolio Segment [Member] \| Real Estate Loan [Member]
Notes receivable, gross	465,010	$ 398,136
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Real Estate [Member]
Notes receivable, gross	278
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Other Collateral [Member]
Notes receivable, gross	0
Residential Portfolio Segment [Member] \| Real Estate Loan [Member] \| Collateral Pledged [Member]
Notes receivable, gross	$ 278