Percentage of interest in the event of default of the debt instrument.

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The multiplier in cash used to calculate monthly redemption of the debt instrument.

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Represents the fair value of embedded derivative.

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Percentage of gross proceeds for placement agent fee of private placement.

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Amount of cash inflow from debenture and warrant issuances, net.

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

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The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.

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Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

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Face (par) amount of debt instrument at time of issuance.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Amount, after accumulated amortization, of debt discount.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of expense (income) related to adjustment to fair value of warrant liability.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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The cash inflow provided by derivative instruments during the period, which are classified as financing activities, excluding those designated as hedging instruments.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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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.

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Note 9 - Debentures (Details Textual) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
	Apr. 27, 2023 USD ($) $ / shares shares	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) $ / shares	Jun. 30, 2022 USD ($)	Dec. 31, 2022 $ / shares
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares		$ 2.18		$ 2.18		$ 7.70
Proceeds From Debenture and Warrant Issuances, Net	$ 3,000			$ 3,000	$ 0
Fair Value Adjustment of Warrants		$ (216)	$ (0)	(216)	$ (2,056)
The 2023 Private Placement [Member]
Proceeds from Issuance of Warrants	1,600
Proceeds from Derivative Instrument, Financing Activities	200
Proceeds from Convertible Debt	$ 1,200
Ladenburg Thalmann and Co. Inc. [Member]
Private Placement, Placement Agent Fee, Percentage of Gross Proceeds	8.00%
Series B-1 Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares	2,538,464
Series B-2 Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) \| shares	2,538,464
Warrants and Rights Outstanding, Term (Year)	2 years
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) \| $ / shares	$ 1.30
Original Issue Discount Senior Secured Convertible Debentures [Member]
Debt Instrument, Face Amount	$ 3,300	1,185		1,185
Debt Instrument, Convertible, Number of Equity Instruments	2,538,464
Debt Instrument, Convertible, Conversion Price (in dollars per share) \| $ / shares	$ 1.30
Debt Instrument, Monthly Redemption, Multiplier in Cash	1.10
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger	90.00%
Debt Instrument, Convertible, Threshold Trading Days	10
Debt Instrument, Redemption Price, Percentage	20.00%
Debt Instrument, Default, Interest Rate	18.00%
Embedded Derivative, Fair Value	$ 209	169		169
Fair Value Adjustment of Warrants				40
Debt Instrument, Unamortized Discount	300	$ 1,696		$ 1,696
Debt Issuance Costs, Gross	294
Debt Instrument, Redemption Price, Amount Per Month	$ 193
Debt Instrument, Interest Rate, Effective Percentage		173.00%		173.00%
Interest Expense, Debt		$ 501		$ 501