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Note 13 - Income Taxes - Summary of Company's Net Operating Loss Carryforwards Expires (Details) $ in Millions	Dec. 31, 2020 USD ($)
Operating loss carryforwards	$ 221.1
Period One [Member]
Operating loss carryforwards	22.7
Period Two [Member]
Operating loss carryforwards	20.5
Period Three [Member]
Operating loss carryforwards	$ 177.9

X

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319

+ Details

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Period Type:	instant

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- Details

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- Details

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