Note 3 - Loans Receivable - Summary of Modified Financing Receivables (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Single family	$ 0	$ 25,791	$ 0
Residential Portfolio Segment [Member] \| Single Family [Member] \| Extended Maturity [Member]
Single family		$ 364
% of Total Loan Type		0.20%
Term increase (Month)		3 months
Commercial Real Estate Portfolio Segment [Member] \| Construction and Land Development [Member] \| Extended Maturity [Member]
Single family		$ 24,684
% of Total Loan Type		6.60%
Term increase (Month)		6 months
Commercial Portfolio Segment [Member] \| Commercial and Industrial [Member] \| Extended Maturity [Member]
Single family		$ 743
% of Total Loan Type		0.70%
Term increase (Month)		3 months

Percentage of financing receivable modified during period for debtor experiencing financial difficulty to total financing receivables.

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-Topic 310
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Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

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Period of increase in weighted average maturity of financing receivable modified for debtor experiencing financial difficulty, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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