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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	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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