Note 1 - Description of the Business and Basis of Presentation (Details Textual)					12 Months Ended
	Jun. 16, 2021	Mar. 23, 2021 USD ($) shares	Mar. 22, 2021 USD ($) $ / shares	Apr. 26, 2019 USD ($) $ / shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($) $ / shares	May 25, 2021 $ / shares	Dec. 31, 2019 USD ($)
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares			$ 0.001		$ 0.001	$ 0.001	$ 0.001
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares					$ 0.001	$ 0.001
Operating Income (Loss), Total					$ 565,000	$ (6,770,000)
Net Income (Loss) Attributable to Parent, Total					4,808,000	(7,187,000)
Stockholders' Equity Attributable to Parent, Ending Balance					3,131,000	(5,996,000)		$ (547,000)
Inventory, Net, Total					5,005,000	1,593,000
Cash, Ending Balance					866,000	$ 1,422,000
Proceeds from Issuance of Private Placement		$ 3,000,000	$ 3,000,000.0	$ 27,500,000
Stock Issued During Period, Shares, New Issues (in shares) | shares		3,517,000
Premarket Tobacco Application Registration [Member]
Cost of Revenue, Total					$ 4,400,000
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	100
Series B Preferred Stock [Member]
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares				$ 0.001