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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, 2022 | Dec. 31, 2021
Inventory Write-down | $ 1,275 | $ 409
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | 7,360,271 | 2,324,007
Unrecognized Tax Benefits, Ending Balance | $ 0 | $ 0
Depreciation, Total | 131 | 109
Capitalized Computer Software, Additions | $ 4,444 | $ 1,140
Capitalized Computer Software, Amortization Period (Year) | 3 years |
Safe Space Solutions [Member] |  |
Inventory Write-down | $ 1,249 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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