Note 4 - Deposits - Interest on Deposits by Type (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Savings	$ 176	$ 397	$ 785	$ 1,085
Transaction accounts	5	26	28	98
Money market accounts	362	312	1,118	945
Certificates of deposit	862	1,406	3,653	4,005
Interest Expense, Deposits, Total	$ 1,405	$ 2,141	$ 5,584	$ 6,133

Interest expense incurred on demand deposit accounts that represent borrowings rather than outstanding drafts.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 220
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.6)
-URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260

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Aggregate amount of interest expense on all deposits.

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The aggregate interest expense incurred on time deposits, including certificates of deposits, in domestic offices.

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