Note 5 - Loans and Leases - Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Notes receivable, gross	$ 1,628,820	$ 1,565,920
Real Estate [Member]
Notes receivable, gross	2,419
Other Collateral [Member]
Notes receivable, gross	923
Collateral Pledged [Member]
Notes receivable, gross	3,342
Commercial Portfolio Segment [Member] | Commercial [Member]
Notes receivable, gross	136,966	166,491
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	739
Commercial Portfolio Segment [Member] | Commercial [Member] | Collateral Pledged [Member]
Notes receivable, gross	739
Commercial Portfolio Segment [Member] | Municipal [Member]
Notes receivable, gross	110,092	67,987
Commercial Portfolio Segment [Member] | Municipal [Member] | Real Estate [Member]
Notes receivable, gross	0
Commercial Portfolio Segment [Member] | Municipal [Member] | Other Collateral [Member]
Notes receivable, gross	0
Commercial Portfolio Segment [Member] | Municipal [Member] | Collateral Pledged [Member]
Notes receivable, gross	0
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member]
Notes receivable, gross	310,289	316,867
Commercial Real Estate Portfolio Segment [Member] | Non-owner Occupied [Member] | Real Estate [Member]
Notes receivable, gross	310
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	310
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member]
Notes receivable, gross	282,200	270,810
Commercial Real Estate Portfolio Segment [Member] | Owner Occupied [Member] | Real Estate [Member]
Notes receivable, gross	1,948
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	1,948
Consumer Portfolio Segment [Member] | Home Equity Loan [Member]
Notes receivable, gross	59,461	59,118
Consumer Portfolio Segment [Member] | Home Equity Loan [Member] | Real Estate [Member]
Notes receivable, gross	0
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	0
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member]
Notes receivable, gross	49,928	52,568
Consumer Portfolio Segment [Member] | Home Equity Line of Credit [Member] | Real Estate [Member]
Notes receivable, gross	75
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	75
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Recourse [Member]
Notes receivable, gross	12,207	12,929
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Nonrecourse [Member]
Notes receivable, gross	125,051	114,909
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
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Other Collateral [Member] | Recourse [Member]
Notes receivable, gross	11
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Other Collateral [Member] | Nonrecourse [Member]
Notes receivable, gross	171
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Collateral Pledged [Member] | Recourse [Member]
Notes receivable, gross	11
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Collateral Pledged [Member] | Nonrecourse [Member]
Notes receivable, gross	171
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member]
Notes receivable, gross	33,905	33,223
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member] | Real Estate [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member] | Other Collateral [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Direct Financing Lease [Member] | Collateral Pledged [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Other Loan [Member]
Notes receivable, gross	13,181	11,709
Consumer Portfolio Segment [Member] | Other Loan [Member] | Real Estate [Member]
Notes receivable, gross	0
Consumer Portfolio Segment [Member] | Other Loan [Member] | Other Collateral [Member]
Notes receivable, gross	2
Consumer Portfolio Segment [Member] | Other Loan [Member] | Collateral Pledged [Member]
Notes receivable, gross	2
Residential Portfolio Segment [Member] | Real Estate Loan [Member]
Notes receivable, gross	417,026	$ 398,136
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Real Estate [Member]
Notes receivable, gross	86
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	$ 86