Note 6 - Amortizable Intangible Assets - Summary of Amortizable Intangible Assets (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Gross carrying amount	$ 4,014,661	$ 4,014,661
Accumulated amortization	2,292,384	2,066,398
Distributorship and Related Agreements [Member]
Gross carrying amount	2,060,000	2,060,000
Accumulated amortization	1,547,290	1,437,423
Lunasin Technology License [Member]
Gross carrying amount	1,954,661	1,954,661
Accumulated amortization	$ 745,094	$ 628,975

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant