Note 4 - Loans - Internal Risk Rating by Loan Class (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Gross loans	$ 1,090,745	$ 1,139,732
Commercial Portfolio Segment [Member]
Gross loans	93,650	115,559
SBA CARES Act Paycheck Protection Program [Member]
Gross loans	59,058	130,814
Commercial Real Estate Portfolio Segment [Member]
Gross loans	825,609	767,536
Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Gross loans	30,494	44,549
Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Gross loans	626,819	550,020
Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Gross loans	168,296	172,967
Residential Portfolio Segment [Member]
Gross loans	94,998	103,854
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Individual Tax Identification Number Loan [Member]
Gross loans	26,912	29,035
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Mortgage Receivable [Member]
Gross loans	50,259	55,925
Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Gross loans	17,827	18,894
Consumer Portfolio Segment [Member]
Gross loans	17,430	21,969
Pass [Member]
Gross loans	968,891	1,004,688
Pass [Member] | Commercial Portfolio Segment [Member]
Gross loans	82,919	102,067
Pass [Member] | SBA CARES Act Paycheck Protection Program [Member]
Gross loans	59,058	130,814
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Gross loans	30,183	41,767
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Gross loans	538,752	456,725
Pass [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Gross loans	150,116	152,623
Pass [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Individual Tax Identification Number Loan [Member]
Gross loans	23,605	25,558
Pass [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Mortgage Receivable [Member]
Gross loans	49,017	54,288
Pass [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Gross loans	17,827	18,894
Pass [Member] | Consumer Portfolio Segment [Member]
Gross loans	17,414	21,952
Watch [Member]
Gross loans	68,190	105,316
Watch [Member] | Commercial Portfolio Segment [Member]
Gross loans	8,667	8,549
Watch [Member] | SBA CARES Act Paycheck Protection Program [Member]
Gross loans	0	0
Watch [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Gross loans	114	2,782
Watch [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Gross loans	48,037	79,845
Watch [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Gross loans	11,372	13,945
Watch [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Individual Tax Identification Number Loan [Member]
Gross loans	0	0
Watch [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Mortgage Receivable [Member]
Gross loans	0	195
Watch [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Gross loans	0	0
Watch [Member] | Consumer Portfolio Segment [Member]
Gross loans	0	0
Special Mention [Member]
Gross loans	33,285	13,764
Special Mention [Member] | Commercial Portfolio Segment [Member]
Gross loans	0	540
Special Mention [Member] | SBA CARES Act Paycheck Protection Program [Member]
Gross loans	0	0
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Gross loans	0	0
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Gross loans	33,285	12,810
Special Mention [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Gross loans	0	414
Special Mention [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Individual Tax Identification Number Loan [Member]
Gross loans	0	0
Special Mention [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Mortgage Receivable [Member]
Gross loans	0	0
Special Mention [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Gross loans	0	0
Special Mention [Member] | Consumer Portfolio Segment [Member]
Gross loans	0	0
Substandard [Member]
Gross loans	20,379	15,964
Substandard [Member] | Commercial Portfolio Segment [Member]
Gross loans	2,064	4,403
Substandard [Member] | SBA CARES Act Paycheck Protection Program [Member]
Gross loans	0	0
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Gross loans	197	0
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Gross loans	6,745	640
Substandard [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Gross loans	6,808	5,985
Substandard [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Individual Tax Identification Number Loan [Member]
Gross loans	3,307	3,477
Substandard [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Mortgage Receivable [Member]
Gross loans	1,242	1,442
Substandard [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Gross loans	0	0
Substandard [Member] | Consumer Portfolio Segment [Member]
Gross loans	16	17
Doubtful [Member]
Gross loans	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member]
Gross loans	0	0
Doubtful [Member] | SBA CARES Act Paycheck Protection Program [Member]
Gross loans	0	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Construction Loans [Member]
Gross loans	0	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Non-owner Occupied [Member]
Gross loans	0	0
Doubtful [Member] | Commercial Real Estate Portfolio Segment [Member] | Commercial Owner Occupied Loan [Member]
Gross loans	0	0
Doubtful [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Individual Tax Identification Number Loan [Member]
Gross loans	0	0
Doubtful [Member] | Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Mortgage Receivable [Member]
Gross loans	0	0
Doubtful [Member] | Residential Portfolio Segment [Member] | Home Equity Loan [Member]
Gross loans	0	0
Doubtful [Member] | Consumer Portfolio Segment [Member]
Gross loans	$ 0	$ 0