Note 5 - Loans - Outstanding TDRs (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Balance	$ 34	$ 42
Specific Reserve Allocation	34	42
Additional Commitment to Lend	0	0
Commercial and Industrial Loans [Member]
Balance	21	28
Specific Reserve Allocation	21	28
Additional Commitment to Lend	0	0
One to Four Family Residential [Member]
Balance	13	14
Specific Reserve Allocation	13	14
Additional Commitment to Lend	$ 0	$ 0

Amount of financing receivables impaired troubled debt restructuring allocated to specific reserve

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

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- Definition

Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18794-111554

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