Note 7 - Derivative Financial Instruments (Details Textual) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Interest Rate Swap [Member]
Derivative, Notional Amount	[1]	$ 178,757		$ 174,893
Derivative, Gain (Loss) on Derivative, Net		0	$ 0
Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount		$ 0
Forward Starting Interest Rate Swap [Member] | Cash Flow Hedging [Member]
Derivative, Notional Amount				$ 0

[1] Notional amounts represent interest rate swap contracts with customers and offsetting interest rate swap contracts with other financial institutions.