Note 3 - Basic and Diluted Net Income Per Share (Details Textual)		9 Months Ended
	Sep. 30, 2022	Mar. 31, 2022 $ / shares	Mar. 14, 2022 $ / shares
Reverse Stock Split [Member] | Minimum [Member] | Forecast [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	1.5
Reverse Stock Split [Member] | Maximum [Member] | Forecast [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio	2.75
The Underwriter’s Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 2.40	$ 2.40
Class of Warrant or Right, Exercise, Period of Recognition (Day)		180 days