Note 14 - Derivative Financial Instruments - Summary of Derivative Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2024	Dec. 31, 2023
Derivative Notional Amount	$ 407,239	$ 407,420
Derivative Instruments in Hedges, Assets, at Fair Value	36,803	33,520
Derivative Instruments in Hedges, Liabilities, at Fair Value	0	375
Derivative, Net Hedge Ineffectiveness Gain (Loss)	(2)	1
Short-Term Debt [Member] \| Interest Rate Swap [Member] \| Cash Flow Hedging [Member]
Derivative Notional Amount	120,000	120,000
Cash Flow Hedge Derivative Instrument Assets at Fair Value	1,248	1,059
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	0	375
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	0	0
Short-Term Debt [Member] \| Interest Rate Cap [Member] \| Cash Flow Hedging [Member]
Derivative Notional Amount	100,000	100,000
Cash Flow Hedge Derivative Instrument Assets at Fair Value	18,596	17,578
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	0	0
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	0	0
Indexed Interest Bearing Demand Deposit Accounts [Member] \| Interest Rate Cap [Member] \| Cash Flow Hedging [Member]
Derivative Notional Amount	100,000	100,000
Cash Flow Hedge Derivative Instrument Assets at Fair Value	6,725	6,736
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	0	0
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	0	0
Commercial Real Estate [Member] \| Interest Rate Swap [Member] \| Fair Value Hedging [Member]
Derivative Notional Amount	15,994	16,175
Fair Value Hedge Derivative Instrument Assets at Fair Value	592	583
Fair Value Hedge Derivative Instrument Liabilities at Fair Value	0	0
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	0	0
Available-for-Sale Securities [Member] \| Interest Rate Swap [Member] \| Fair Value Hedging [Member]
Derivative Notional Amount	71,245	71,245
Fair Value Hedge Derivative Instrument Assets at Fair Value	9,642	7,564
Fair Value Hedge Derivative Instrument Liabilities at Fair Value	0	0
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	$ (2)	$ 1

Fair value of all asset derivatives designated as cash flow hedging instruments.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Fair value of all liability derivatives designated as cash flow hedging instruments.

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Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

+ References

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No definition available.

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Amount of gain (loss) from the ineffectiveness of the hedge.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4C
-Subparagraph (d)(1)
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-1B

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
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-Section 50
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Fair value of all derivative liabilities designated as fair value hedging instruments.

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The net gain (loss) recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness.

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Amount of gain (loss)recognized in the income statement from the hedging ineffectiveness of a fair value hedge.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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