Note 7 - Fair Value (Details Textual)	3 Months Ended	6 Months Ended
Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	$ 2,130,000	$ 319,000	$ 2,130,000	$ 319,000	$ 877,000
Impaired Financing Receivable, Related Allowance	194,000	31,000	194,000	31,000	285,000
Provision for Loan and Lease Losses	$ 375,000	250,000	$ 295,000	525,000
Measurement Input, Discount Rate [Member]
Other Real Estate Owned, Measurement Input	10		10
Fair Value, Nonrecurring [Member]
Other Real Estate, Ending Balance	$ 0		$ 0		0
Other Real Estate, Disposals			0	0
Impaired Loans [Member]
Provision for Loan and Lease Losses	114,000	1,000	114,000	1,000
Commercial Business [Member]
Impaired Financing Receivable, Unpaid Principal Balance	2,000		2,000		3,000
Residential Mortgage Loan [Member]
Impaired Financing Receivable, Unpaid Principal Balance	68,000		68,000		69,000
Commercial Real Estate Portfolio Segment [Member]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,060,000	315,000	2,060,000	315,000	559,000
Impaired Financing Receivable, Related Allowance	177,000	27,000	177,000	27,000	88,000
Provision for Loan and Lease Losses	87,000	409,000	231,000	796,000
Commercial Portfolio Segment [Member]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,000	4,000	2,000	4,000	250,000
Impaired Financing Receivable, Related Allowance	2,000	$ 4,000	2,000	$ 4,000	196,000
Collateral Pledged [Member] \| Commercial Real Estate Portfolio Segment [Member]
Impaired Financing Receivable, with Related Allowance, Fair Value	1,900,000		1,900,000		470,000
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,100,000		2,100,000		558,000
Impaired Financing Receivable, Related Allowance	$ 177,000		$ 177,000		88,000
Collateral Pledged [Member] \| Commercial Portfolio Segment [Member]
Impaired Financing Receivable, with Related Allowance, Fair Value					54,000
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance					247,000
Impaired Financing Receivable, Related Allowance					$ 193,000

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Amount of allowance for credit losses related to recorded investment.

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Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure.

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Amount of expense related to estimated loss from loan and lease transactions.

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