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Note 3 - Related Parties - Related Party Activities (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019	Oct. 01, 2019	Jun. 01, 2019	Jan. 01, 2019
Total notes & accounts receivables and deposits	$ 1,106,221		$ 1,106,221		$ 1,099,228
Total noncurrent notes receivables	2,331,844		2,331,844		2,418,921
Equity investment in Nutracom	505,000		505,000		505,000
Other revenue			617,922	$ 564,389
Fullfillment & professional fees			466,148	458,826
Interest income on promissory notes			113,584	132,750
Gain on sale of fixed assets				434,549
Unbilled Revenues [Member]
Unbilled receivables: Straight line rent revenue greater than rental billings	210,356		210,356		95,732
Nutracom, LLC [Member]
Deposits with Nutracom for inventory	808,515		808,515		941,154
Equity investment in Nutracom	505,000		505,000		505,000
Trade accounts payable and other accrued expenses	207,786		207,786		430,907
Gain on sale of fixed assets				434,549
Finished goods inventory purchased from Nutracom			5,023,000	4,042,000
Nutracom, LLC [Member] \| Other Income [Member]
Royalty income (other income/expense)			48,682
Nutracom, LLC [Member] \| Unsecured Promissory Note, 6 Percent Interest Rate [Member]
Note receivable, current	60,615		60,615
Note receivable, noncurrent	399,968		399,968		460,583		$ 460,583
Nutracom, LLC [Member] \| Unsecured Promissory Note, 7 Percent Interest Rate [Member]
Note receivable, current	37,853		37,853
Note receivable, noncurrent	673,310	$ 764,344	673,310	$ 764,344	711,163	$ 711,163		$ 764,344
Distributor [Member]
Note receivable, current	136,627		136,627		130,629
Note receivable, noncurrent	1,048,210		1,048,210		1,151,443
Nutracom LLC and Distributor [Member]
Total notes & accounts receivables and deposits	$ 62,611		$ 62,611		$ 27,445