Note 2 - COVID-19 Pandemic (Details Textual) - USD ($)		3 Months Ended	6 Months Ended
	May 01, 2020	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019
Income Tax Benefit CARES Act		$ 1,300,000	$ 1,500,000
Proceeds from Issuance of Long-term Debt, Total			$ 2,181,000
Paycheck Protection Program CARES Act [Member]
Proceeds from Issuance of Long-term Debt, Total	$ 2,181,157