Note 6 - Leases - Schedule of Lease Terms (Details)	Sep. 30, 2021	Dec. 31, 2020
Weighted Average Remaining Lease Term
Operating lease (years) (Year)	1 year 9 months 18 days	2 years 7 months 6 days
Finance leases (years) (Year)	0 years	3 months 18 days
Weighted Average Discount Rate
Operating lease	9.00%	9.00%
Finance leases	0.00%	9.70%

Represents the weighted average discount rate for the leases.

No definition available.

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- Definition

Represents the weighted average remaining lease terms.

+ References

No definition available.

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- Definition

Weighted average discount rate for finance lease calculated at point in time.

+ References

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-Publisher FASB
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- Definition

Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

Weighted average discount rate for operating lease calculated at point in time.

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971

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-Section 50
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