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Note 13 - Income Taxes - Summary of Company's Net Operating Loss Carryforwards Expires (Details) $ in Millions | Dec. 31, 2020 USD ($)
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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

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- 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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