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Note 5 - Fair Value Measurements (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Estimated Selling Costs of Impaired Loans	$ 901,000	$ 901,000
Mandatorily Redeemable Securities	$ 8,000,000.0
Notes Payable, Other Payables [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.67%
Other Borrowings [Member]
Notes Payable, Total	$ 8,300,000

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- Definition

The estimated amount of selling costs that would incur when impaired loans sold.

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The amount of mandatorily redeemable securities.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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