Note 4 - Securities (Details Textual) - USD ($) $ in Millions |
Mar. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|
| Security Owned and Pledged as Collateral, Fair Value, Total | $ 54.5 | $ 65.5 |
| X | ||||||||||
- Definition Fair value of financial instrument held by the entity for its own account (proprietary securities) for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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