Note 11 - Deposits - Interest Expense on Deposits (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Checking accounts	$ 151	$ 103	$ 62
Savings accounts	65	63	61
Money market accounts	840	1,171	865
Certificates	1,795	1,995	1,243
Interest Expense, Deposits, Total	$ 2,851	$ 3,332	$ 2,231

Aggregate amount of interest expense on all deposits.

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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- Definition

Amount of interest expense on domestic certificates of deposit liabilities.

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- Definition

Amount of interest expense on domestic money market demand account deposit liabilities.

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- Definition

Amount of interest expense on domestic savings deposit liabilities.

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Interest expense incurred on the amount of Negotiable Order of Withdrawal (NOW). Interest-bearing transaction account that combines the payable on demand feature of checks and investment feature of savings accounts. A NOW account is functionally an interest paying checking account.

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