Note 4 - Loans and Allowance for Loan Loss - Composition of Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans	$ 974,650	$ 952,496
Loans, percent	100.00%	100.00%
Allowance for loan losses	$ (12,322)	$ (9,867)
Loans, Net	962,328	942,629
Originated Loans [Member]
Allowance for loan losses	(12,322)	(9,867)
Loans, Net	962,328	942,629
Residential Portfolio Segment [Member] \| Real Estate Sector [Member]
Loans	346,864	347,766
Residential Portfolio Segment [Member] \| Real Estate Sector [Member] \| Originated Loans [Member]
Loans	$ 346,864	$ 347,766
Loans, percent	35.50%	36.60%
Commercial Portfolio Segment [Member] \| Real Estate Sector [Member]
Loans	$ 354,374	$ 351,360
Commercial Portfolio Segment [Member] \| Real Estate Sector [Member] \| Originated Loans [Member]
Loans	$ 354,374	$ 351,360
Loans, percent	36.40%	36.90%
Commercial Portfolio Segment [Member] \| Commercial and Industrial Sector [Member]
Loans	$ 80,721	$ 85,586
Commercial Portfolio Segment [Member] \| Commercial and Industrial Sector [Member] \| Originated Loans [Member]
Loans	$ 80,721	$ 85,586
Loans, percent	8.30%	9.00%
Construction Portfolio Segment [Member] \| Real Estate Sector [Member]
Loans	$ 50,017	$ 35,605
Construction Portfolio Segment [Member] \| Real Estate Sector [Member] \| Originated Loans [Member]
Loans	$ 50,017	$ 35,605
Loans, percent	5.10%	3.70%
Consumer Portfolio Segment [Member]
Loans	$ 121,494	$ 113,637
Consumer Portfolio Segment [Member] \| Originated Loans [Member]
Loans	$ 121,494	$ 113,637
Loans, percent	12.50%	11.90%
Unallocated Financing Receivables [Member] \| Originated Loans [Member]
Loans	$ 21,180	$ 18,542
Loans, percent	2.20%	1.90%

Represents a percentage of a financing receivable portfolio.

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-Section S99
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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7)
-URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878

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