XML 86 R46.htm IDEA: XBRL DOCUMENT
v3.22.1

Note 1 - Organization and Significant Accounting Policies - Weighted Average Assumptions (Details) | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Measurement Input, Risk Free Interest Rate [Member] |  |
Warrants and right, measurement input | 0.001 | 0.019
Measurement Input, Expected Dividend Rate [Member] |  |
Warrants and right, measurement input | 0.000 | 0.000
Measurement Input, Expected Term [Member] |  |
Warrants and right, measurement input | 0.2 | 1.7
Measurement Input, Price Volatility [Member] |  |
Warrants and right, measurement input | 0.568 | 0.703

X
- Definition Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedDividendRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |