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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss.

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Note 1 - Summary of Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Federal Home Loan Bank, Consolidated Obligations, Total	$ 48,400,000	$ 63,400,000
Escrow Deposit	1,900,000	2,200,000
Servicing Asset at Fair Value, Amount, Ending Balance	257,000	335,000
Valuation Allowance for Impairment of Recognized Servicing Assets, Balance, Ending Balance	0	0
Deferred Tax Assets, Net, Total	2,741,000	3,873,000
Deferred Tax Assets, Valuation Allowance, Total	200,000	0
Other Assets [Member]
Operating Lease, Right-of-Use Asset	5,075,000	5,846,000
Core Deposits [Member] \| Other Assets [Member]
Finite-Lived Intangible Assets, Net, Ending Balance	$ 7,000	$ 41,000
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset			$ 6,700,000
Building and Building Improvements [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	25 years
Building and Building Improvements [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	40 years
Building [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	10 years
Building [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	20 years
Furniture and Fixtures [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Furniture and Fixtures [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	15 years
Computer Equipment [Member] \| Minimum [Member]
Property, Plant and Equipment, Useful Life (Year)	2 years
Computer Equipment [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	5 years
Automobiles [Member] \| Maximum [Member]
Property, Plant and Equipment, Useful Life (Year)	4 years