Note 8 - Loans Receivable, Net (Details Textual)	3 Months Ended
Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Financing Receivable, 90 Days or More Past Due, Still Accruing	$ 0		$ 0
Financing Receivable, Nonaccrual, Interest Income	$ 0
Financing Receivable, Number of Loans Modified	2		2
Financing Receivable, Modified, Accumulated	$ 367,000		$ 385,000
Financing Receivable, Modified in Period, Amount	$ 0	$ 0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
Off-Balance-Sheet, Credit Loss, Liability	$ 176,100,000
Other Liabilities [Member]
Off-Balance-Sheet, Credit Loss, Liability	1,100,000		$ 0
Commercial Portfolio Segment [Member]
Financing Receivable, Nonaccrual, Review Limit	200,000
Consumer Portfolio Segment [Member]
Financing Receivable, Nonaccrual, Review Limit	$ 100,000

Limit of financing receivable on nonaccrual status for review.

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- Definition

Number of loans modified for debtor experiencing financial difficulty.

+ References

No definition available.

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- Definition

Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

+ References

No definition available.

+ Details

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- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
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-Name Accounting Standards Codification
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
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- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

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

Amortized cost of financing receivable 90 days or more past due and still accruing. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
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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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- Details

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