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Note 1 - Summary of Significant Accounting Policies - Recurring Fair Value Measurements (Details) - USD ($)	Jun. 30, 2020	May 21, 2020
Prefunded warrants	$ 2,811,900	$ 2,575,000
Fair Value, Recurring [Member]
Contingent Earn-out Liability	901,537
Prefunded warrants	2,811,900
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Contingent Earn-out Liability	0
Prefunded warrants	2,811,900
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Contingent Earn-out Liability	0
Prefunded warrants	0
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Contingent Earn-out Liability	901,537
Prefunded warrants	$ 0

X

- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 35
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=116859824&loc=d3e6819-128478

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 25
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6408-128476

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X

- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

No definition available.

+ Details

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