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Note 8 - Derivative and Hedging Activities - Location and Amount of Gain (Loss) in Income on Fair Value Hedging Relationships (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Interest Income [Member]
Total amounts of income and expense line items presented in the consolidated statements of income in which the effects of fair value or cash flow hedges are recorded	$ (55)	$ 0
Interest Income [Member] | Interest Rate Contract, Hedged Items [Member]
The effects of fair value and cash flow hedging:	(1,930)	0
Interest Income [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
The effects of fair value and cash flow hedging:	2,171	0
Interest Income [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Amount excluded from effectiveness testing recognized in earnings based on amortization approach	(496)	0
Interest Income [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Amount excluded from effectiveness testing recognized in earnings based on amortization approach	0	0
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income	0	0
Interest Expense [Member]
Total amounts of income and expense line items presented in the consolidated statements of income in which the effects of fair value or cash flow hedges are recorded	(825)	0
Interest Expense [Member] | Interest Rate Contract, Hedged Items [Member]
The effects of fair value and cash flow hedging:	0	0
Interest Expense [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
The effects of fair value and cash flow hedging:	0	0
Interest Expense [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Fair Value Hedging [Member]
Amount excluded from effectiveness testing recognized in earnings based on amortization approach	0	0
Interest Expense [Member] | Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member]
Amount excluded from effectiveness testing recognized in earnings based on amortization approach	(503)	0
Amount of gain or (loss) reclassified from accumulated other comprehensive income into income	$ 0	$ 0

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624177-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
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- Definition

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5624171-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1),(2)
-URI https://asc.fasb.org/extlink&oid=121577467&loc=d3e76258-113986

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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959

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