Note 2 - Summary of Significant Accounting Policies - Revenue From Asset Management Operations (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Total revenue	$ 3,589,899	$ 1,332,743
Investment Performance [Member]
Total revenue	1,607,644	(834,014)
Management and Performance Fee Revenue [Member]
Total revenue	65,171	41,151
Fund Management Services Revenue [Member]
Total revenue	100,461	17,614
Asset Management [Member]
Total revenue	$ 1,773,276	$ (775,249)

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration