Note 14 - Series B 8% Convertible Preferred Stock (Details) - Series B Preferred Stock [Member] - USD ($)		9 Months Ended
	Oct. 05, 2018	Dec. 31, 2018
Note 14 - Series B 8% Convertible Preferred Stock (Details) [Line Items]
Stock Issued During Period, Shares, New Issues (in Shares)	166,667
Proceeds from Issuance of Convertible Preferred Stock	$ 1,000,000
Preferred Stock, Par or Stated Value Per Share (in Dollars per share)	$ 6.00	$ 0.10
Convertible Preferred Stock, Conversion Price (in Dollars per share)	$ 2.00
Preferred Stock, Dividend Rate, Percentage	8.00%	8.00%
Preferred Stock, Conversion Basis	calculated on the basis of a 360 day year, consisting of twelve 30-day months, and shall accrue from the date of issuance of such shares of Series B Preferred, payable quarterly in cash
Dividends Payable, Current	$ 19,111
Preferred Stock Dividends and Other Adjustments		$ 420,000
Debt Instrument, Convertible, Beneficial Conversion Feature		$ 17,496