Note 5 - Other Long-Term Obligations and Commitments (Details Textual) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Operating Lease, Weighted Average Discount Rate, Percent	9.69%
Operating Lease, Cost	$ 370	$ 347
Operating Lease, Payments	$ 391	$ 365
Operating Lease, Weighted Average Remaining Lease Term	5 months 5 days	8 months 5 days
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year	$ 401
Lessee, Operating Lease, Liability, to be Paid, Year One	149
Operating Lease, Expense	$ 441	$ 346

Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
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-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-6

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- Definition

Amount of lessee's undiscounted obligation for lease payment for operating lease having initial or remaining lease term in excess of one year to be paid in remainder of current fiscal year.

+ References

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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Amount of operating lease expense. Excludes sublease income.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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

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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.

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