v3.21.2

Note 1 - Nature of Operations (Details Textual) - USD ($)				6 Months Ended
	Feb. 08, 2021	Feb. 04, 2021	Jan. 28, 2021	Jun. 30, 2021
Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)				2,530,000
The 2021 Offering [Member] | Lake Street Capital Markets, LLC and Northland Securities, Inc. [Member]
Proceeds from Issuance of Common Stock, Net	$ 27,600,000
The 2021 Offering [Member] | Lake Street Capital Markets, LLC and Northland Securities, Inc. [Member] | Common Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)		2,530,000
Revolving Credit Facility [Member]
Debt Instrument, Collateral Amount			$ 750,000
Line of Credit Facility, Commitment Fee Percentage			5.00%

X

- Definition

Represents the cash inflow from the issuance of common stock, net of offering costs.

+ References

No definition available.

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X

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823

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X

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

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- Definition

Number of new stock issued during the period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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-Topic 505
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