Note 5 - Loans - Total Loans on Nonaccrual (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Total loans on nonaccrual	$ 3,955	$ 9,266
Real Estate, Construction [Member]
Total loans on nonaccrual	349	515
Real Estate, Mortgage [Member]
Total loans on nonaccrual	3,579	8,495
Commercial And Industrial Loan [Member]
Total loans on nonaccrual	$ 27	$ 256

Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5111-111524

Name:	us-gaap_LoansAndLeasesReceivableImpairedNonperformingNonaccrualOfInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant