Note 1 - Nature of Business and Significant Accounting Policies (Details Textual) - USD ($)		12 Months Ended
	Jan. 01, 2019	Dec. 31, 2019	Dec. 31, 2018	Mar. 25, 2019	Jan. 31, 2019	Sep. 11, 2018	Dec. 31, 2017
Sales Returns, Goods, Percentage of Refund		100.00%
Sales Returns, Goods, Percentage		0.08%	0.17%
Foreign Currency Transaction Gain (Loss), Unrealized		$ (11,450)	$ 32,577
Advertising Expense		16,800	19,300
Research and Development Expense, Total		185,000	473,000
Operating Lease, Right-of-Use Asset		354,440
Operating Lease, Liability, Total		340,351
Cash and Cash Equivalents, at Carrying Value, Ending Balance		$ 1,630,779	$ 1,989,974				$ 3,272,788
Nutracom, LLC [Member]
Purchase Agreement, Payments Made Per Year	$ 100,000
Revolving Credit Facility [Member]
Long-term Line of Credit, Total					$ 500,000
Line of Credit Facility, Maximum Borrowing Capacity				$ 750,000	$ 750,000	$ 750,000
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset	451,000
Operating Lease, Liability, Total	$ 457,000
Minimum [Member]
Finite-Lived Intangible Asset, Useful Life		2 years
Finite-Lived Intangible Assets, Remaining Amortization Period		5 years
Maximum [Member]
Finite-Lived Intangible Asset, Useful Life		17 years
Finite-Lived Intangible Assets, Remaining Amortization Period		10 years
Computer Equipment and Software [Member] | Minimum [Member]
Property, Plant and Equipment, Useful Life		3 years
Computer Equipment and Software [Member] | Maximum [Member]
Property, Plant and Equipment, Useful Life		5 years
Office Equipment and Machinery [Member]
Property, Plant and Equipment, Useful Life		7 years
Real Property [Member]
Property, Plant and Equipment, Useful Life		39 years