Note 4 - Loans - Major Classifications (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Jun. 30, 2019
Loans and Leases Receivable, Gross, Total	$ 568,680		$ 544,473
Net deferred loan fees and costs	(2,253)		(1,612)
Allowance for loan losses	(6,471)	$ (5,678)	(5,678)	$ (3,788)
Net loans	559,956		537,183
Commercial Portfolio Segment [Member]
Loans and Leases Receivable, Gross, Total	112,337		158,667
Allowance for loan losses	(904)	(947)	(947)	(660)
Commercial Real Estate Portfolio Segment [Member]
Allowance for loan losses	(3,949)	(3,623)	(3,623)	(2,575)
Commercial Real Estate Portfolio Segment [Member] \| Construction Loans [Member]
Loans and Leases Receivable, Gross, Total	10,525		16,235
Commercial Real Estate Portfolio Segment [Member] \| Other Commercial Real Estate Loans [Member]
Loans and Leases Receivable, Gross, Total	269,679		229,029
Residential Portfolio Segment [Member]
Allowance for loan losses	(1,307)	(989)	(989)	(494)
Residential Portfolio Segment [Member] \| Construction Loans [Member]
Loans and Leases Receivable, Gross, Total	9,073		9,344
Residential Portfolio Segment [Member] \| Residential Real Estate Owner Occupied Loans [Member]
Loans and Leases Receivable, Gross, Total	118,269		90,494
Residential Portfolio Segment [Member] \| Residential Real Estate Non-owner Occupied Loans [Member]
Loans and Leases Receivable, Gross, Total	19,151		19,370
Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Gross, Total	29,646		21,334
Allowance for loan losses	$ (311)	$ (119)	$ (119)	$ (59)

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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