Note 2 - Summary of Significant Accounting Policies - Noncontrolling Interest (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Noncontrolling interest	$ 4,248,787	$ 1,104,678
Kirnland [Member]
Percent of ownership of noncontrolling interest	33.30%
Noncontrolling interest	$ 1,292,623	1,104,678
OW [Member]
Percent of ownership of noncontrolling interest	32.50%
Noncontrolling interest	$ 1,600,058
MS [Member]
Percent of ownership of noncontrolling interest	35.00%
Noncontrolling interest	$ 459,126
MIN [Member]
Percent of ownership of noncontrolling interest	39.70%
Noncontrolling interest	$ 896,980

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which is directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent (that is, noncontrolling interest, previously referred to as minority interest).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(24))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.31)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(22))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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