Represents the grant date fair value of warrants or rights.

No definition available.

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- Definition

Represents the grant-date fair value of warrants or rights granted during the period.

+ References

No definition available.

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- Definition

Represents the period following the issuance of warrants or rights at which those warrants or rights become exercisable.

+ References

No definition available.

+ Details

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- Definition

The amount of accrued interest on the debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

No definition available.

+ Details

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- Definition

The percentage of the total debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

+ Details

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- Definition

The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
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-SubTopic 10
-Section 50
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- Definition

The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586

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- Definition

The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

+ Details

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Balance Type:	credit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
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-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

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Period Type:	duration

- Definition

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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Note 8 - Stockholders' Equity (Details Textual) - USD ($)					3 Months Ended
	Feb. 11, 2021	Sep. 23, 2020	Aug. 13, 2020	Nov. 11, 2019	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Gain (Loss) on Extinguishment of Debt, Total					$ 4,277,000	$ 0
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 3.57		$ 3.57
Warrant Issued in connection with Conversion of Subordinated Debt [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	150,418
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 2.507
Class of Warrant or Right, Grant Date Fair Value (in dollars per share)	$ 2.02
Class of Warrant or Right, Period Following Issuance at which Warrants are Exercisable (Year)	1 year
Warrants and Rights Outstanding	$ 304,000
Warrant In Connection With Amended Subordinated Loan [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)				41,667
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 3.00
Class of Warrant or Right, Grants in Period, Grant Date Fair Value (in dollars per share)				$ 2.40
Warrant Issued in Connection with Amended 2017 Credit Agreement [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)		1,000,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 3.75
Class of Warrant or Right, Period Following Issuance at which Warrants are Exercisable (Year)		1 year
Warrants and Rights Outstanding		$ 1,400,000
Class of Warrant or Right, Grants in Period, Grant Date Fair Value (in dollars per share)		$ 1.42
Warrants and Rights Outstanding, Term (Year)		5 years
Warrants Issued in Connection With the Conversion of Subordinated Loan Agreement to Common Stock [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	150,418
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 2.507
Class of Warrant or Right, Period Following Issuance at which Warrants are Exercisable (Year)	1 year
Class of Warrant or Right, Grants in Period, Grant Date Fair Value (in dollars per share)	$ 2.02
Warrants and Rights Outstanding, Term (Year)	5 years
Subordinated Debt [Member]
Gain (Loss) on Extinguishment of Debt, Total			$ 552,000
Conversion from Subordinated Promissory Note to Common Stock [Member]
Debt Conversion, Original Debt, Percentage of Total Debt	50.00%		50.00%
Debt Conversion, Original Debt, Amount	$ 1,250,000		$ 1,250,000
Debt Conversion, Accrued Interest, Amount	$ 62,000		$ 265,000
Debt Conversion, Converted Instrument, Shares Issued (in shares)	601,674		403,602
Debt Conversion, Converted Instrument, Amount			$ 963,000