Note 7 - Loans and the Allowance for Loan Losses - Troubled Debt Restructurings (Details) $ in Thousands	12 Months Ended
Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Number of contracts	13	10
Pre-modification outstanding recorded investment	$ 8,571	$ 8,326
Post-modification outstanding recorded investment	$ 5,027	$ 5,820
Residential Portfolio Segment [Member] \| Real Estate Residential One- to Four-Family [Member]
Number of contracts	3	1
Pre-modification outstanding recorded investment	$ 235
Post-modification outstanding recorded investment	$ 219
Residential Portfolio Segment [Member] \| Nonfarm Nonresidential [Member]
Number of contracts	3	3
Pre-modification outstanding recorded investment	$ 2,411	$ 2,412
Post-modification outstanding recorded investment	$ 2,044	$ 2,308
Commercial Portfolio Segment [Member]
Number of contracts	6	6
Pre-modification outstanding recorded investment	$ 5,914	$ 5,914
Post-modification outstanding recorded investment	$ 2,755	$ 3,512
Consumer Portfolio Segment [Member]
Number of contracts	1
Pre-modification outstanding recorded investment	$ 11
Post-modification outstanding recorded investment	$ 9

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

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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