Note 1 - Description of the Business and Basis of Presentation (Details Textual)		3 Months Ended
	Jun. 16, 2021	Mar. 31, 2023 USD ($) $ / shares	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares	Dec. 31, 2021 USD ($)
Common Stock, Par or Stated Value Per Share | $ / shares		$ 0.001		$ 0.001
Operating Income (Loss)		$ 1,517,000	$ (367,000)
Net Income (Loss) Attributable to Parent		1,390,000	(706,000)
Net Cash Provided by (Used in) Operating Activities		241,000	372,000
Equity, Attributable to Parent		355,000	$ 3,855,000	$ 1,700,000	$ 3,131,000
Assets, Current		4,935,000		5,850,000
Liabilities, Current		4,217,000		$ 4,783,000
Premarket Tobacco Application Registration [Member]
Cost of Revenue		$ 5,100,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	100