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Note 4 - Allowance for Credit Losses (Details Textual) Pure in Thousands, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($)	Jan. 01, 2023 USD ($)
Financing Receivable, Modified, Accumulated		$ 1,600	$ 101
Financing Receivable, Modifications, Number of Contracts		0	0
Financing Receivable, Modified, Subsequent Default	$ 0	$ 0
Off-Balance-Sheet, Credit Loss, Liability				$ 0
Off-Balance-Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	0
Other Liabilities [Member]
Off-Balance-Sheet, Credit Loss, Liability	$ 153
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Off-Balance-Sheet, Credit Loss, Liability				$ 153

X

- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481962/310-10-50-33

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- Definition

Accumulated amortized cost of financing receivable modified for debtor experiencing financial difficulty.

+ References

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-Topic 310
-SubTopic 10
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-Section 50
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-URI https://asc.fasb.org//1943274/2147481962/310-10-50-42

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- Definition

Amortized cost of financing receivable with payment default in current period and modified within previous 12 months preceding payment default for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
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- Definition

Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

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-SubTopic 20
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-Section 50
-Paragraph 13
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-Publisher FASB
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