Note 8 - Loans by Loan Class Modified as TDRs and Remodified TDRS (Details) $ in Thousands	3 Months Ended
Mar. 31, 2020 USD ($) contract	Mar. 31, 2019 USD ($) contract
Financing Receivable Modifications [Line Items]
Number of contracts \| contract	0	1
Pre-modification outstanding recorded investment	$ 0	$ 12
Post-modification outstanding recorded investment	$ 0	$ 12
Commercial Portfolio Segment [Member] \| Secured by Commercial Real Estate [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| contract	0	0
Pre-modification outstanding recorded investment	$ 0	$ 0
Post-modification outstanding recorded investment	$ 0	$ 0
Retail Portfolio Segment [Member] \| Consumer Loans [Member]
Financing Receivable Modifications [Line Items]
Number of contracts \| contract	0	1
Pre-modification outstanding recorded investment	$ 0	$ 12
Post-modification outstanding recorded investment	$ 0	$ 12

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of financing receivables that have been modified by troubled debt restructurings.

+ 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

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Amount, after troubled debt restructuring, of modified financing receivable.

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Amount, before troubled debt restructuring, of financing receivable to be modified.

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