Note 25 - Derivative Instruments - Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Loans, including fees		$ 183,560		$ 136,918		$ 89,907
Taxable		19,745		24,262		23,260
Total amounts in the Consolidated Statements of Income, Short-term Borrowings		22,584		20,976		$ 4,339
Designated as Hedging Instrument [Member]
Loans, including fees		183,560		136,918
Taxable		19,745		24,262
Total amounts in the Consolidated Statements of Income, Short-term Borrowings		22,584		20,976
Mortgage-backed securities, Notional Amount		200,000		600,000
Mortgage-backed securities, Carrying Amount		199,854		600,339
Mortgage-backed securities, Fair Value		(146)		339
Designated as Hedging Instrument [Member] | Residential Mortgage-Backed Securities [Member]
Mortgage-backed securities, Notional Amount		200,000	[1]	200,000	[2]
Mortgage-backed securities, Carrying Amount		199,854	[1]	200,241	[2]
Mortgage-backed securities, Fair Value		(146)	[1]	241	[2]
Designated as Hedging Instrument [Member] | Mortgage Loan Pools [Member]
Mortgage-backed securities, Notional Amount	[3]			400,000
Mortgage-backed securities, Carrying Amount	[3]			400,098
Mortgage-backed securities, Fair Value	[3]			98
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value Hedging [Member] | Interest and Fee Income, Loans and Leases [Member]
Derivative, Gain (Loss) on Derivative, Net		367		252
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value Hedging [Member] | Interest Income, Securities, Operating, Taxable [Member]
Derivative, Gain (Loss) on Derivative, Net		2,280		1,881
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Fair Value Hedging [Member] | Interest Expense, Short-Term Borrowings [Member]
Derivative, Gain (Loss) on Derivative, Net		0		0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest and Fee Income, Loans and Leases [Member]
Derivative, Gain (Loss) on Derivative, Net		0		0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Income, Securities, Operating, Taxable [Member]
Derivative, Gain (Loss) on Derivative, Net		0		0
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedging [Member] | Interest Expense, Short-Term Borrowings [Member]
Derivative, Gain (Loss) on Derivative, Net		$ 721		$ (473)

[1] Includes amounts related to residential agency mortgage-backed securities currently designated as the hedged item in a fair value hedge using the portfolio layer method. At September 30, 2024, the amortized cost of the closed portfolios used in these hedging relationships was $313.0 million.

[2] Includes amounts related to residential agency mortgage-backed securities currently designated as the hedged item in a fair value hedge using the portfolio layer method. At December 31, 2023, the amortized cost of the closed portfolios used in these hedging relationships was $323.4 million.

[3] These amounts include the amortized cost basis of residential real estate loans that were used to designate hedging relationships in which the hedged item is the stated amount of assets in the closed portfolio anticipated to be outstanding for the designated hedged period. At December 31, 2023, the amortized cost basis of the residential real estate loans used in these hedging relationships was $687.5 million.