Note 4 - Carousel Designs (Details Textual) - Discontinued Operations, Disposed of by Means Other than Sale [Member] - Carousel Designs, LLC [Member] - Subsequent Event [Member]	May 05, 2021 USD ($)
Employee Severance [Member]
Restructuring and Related Cost, Expected Cost, Total	$ 100,000
Contract Termination [Member] | Minimum [Member]
Restructuring and Related Cost, Expected Cost, Total	200,000
Contract Termination [Member] | Maximum [Member]
Restructuring and Related Cost, Expected Cost, Total	$ 500,000