Note 12 - Commitments and Contingencies (Details Textual)			12 Months Ended
	Mar. 28, 2018 USD ($)	Jan. 01, 2018 USD ($)	Dec. 31, 2018 USD ($) ft²
Chief Executive Officer [Member]
Officer Compensation, Annual Compensation, Cash	$ 240,000	$ 240,000
Officer Compensation, Annual Compensation, Share Value	100,000	100,000
Chief Financial Officer [Member]
Officer Compensation, Annual Compensation, Cash	70,000	70,000
Officer Compensation, Annual Compensation, Share Value	$ 12,000	$ 12,000
Executive and Administrative Offices [Member]
Area of Real Estate Property | ft²			1,800
Operating Leases Rent Expense Monthly Amount			$ 1,120