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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Inventory Valuation Reserves | $ 160 | $ 1,777
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 6,223,134 | 7,360,271
Unrecognized Tax Benefits, Ending Balance | $ 0 | $ 0
Depreciation, Total | 166 | 131
Property, Plant and Equipment, Disposals | 150 | 0
Capitalized Computer Software, Additions | 3,366 | $ 4,444
Capitalized Computer Software, Amortization Period (Year) |  | 3 years
Safe Space Solutions [Member] |  |
Inventory Write-down | $ 1,707 |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 330 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483080/330-10-50-2 + Details
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