Note 4 - Loans/Leases Receivable - Remaining Discount on Acquired loans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at the beginning of the period	$ (1,533,000)	$ (3,139,000)	$ (6,435,000)
Discount added at acquisition	(13,381,000)
Reclassification of nonaccretable discount to accretable			(530,000)
Reclassification of nonaccretable discount to allowance			353,000
Accretion recognized	8,826,000	1,606,000	3,473,000
Balance at the end of the period	$ (6,088,000)	(1,533,000)	(3,139,000)
Performing Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at the beginning of the period		$ (3,139,000)	(6,378,000)
Reclassification of nonaccretable discount to allowance			353,000
Accretion recognized			2,886,000
Balance at the end of the period			(3,139,000)
PCI Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Balance at the beginning of the period			(57,000)
Reclassification of nonaccretable discount to accretable			(530,000)
Accretion recognized			$ 587,000