Note 1 - Organization and Significant Accounting Policies (Details Textual)
Dec. 12, 2019
|Reverse Stock Split [Member]|
|Stockholders' Equity Note, Stock Split, Conversion Ratio||15|
Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef