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Note 3 - Basic and Diluted Net Income (Loss) Per Share (Details Textual)	3 Months Ended		6 Months Ended	9 Months Ended
	Mar. 31, 2023 shares	Mar. 31, 2022 shares	Dec. 31, 2022 shares	Mar. 31, 2023 shares	Mar. 31, 2022 shares
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)	364,196	82,500		364,196	82,500
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			50,000	220,000
The 2021 Omnibus Equity Incentive Plan [Member]
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total (in shares)				277,037
The 2021 Omnibus Equity Incentive Plan [Member] \| Reverse Stock Split [Member] \| Minimum [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio				1.5
The 2021 Omnibus Equity Incentive Plan [Member] \| Reverse Stock Split [Member] \| Maximum [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio				2.75
The 2021 Omnibus Equity Incentive Plan [Member] \| Share-Based Payment Arrangement, Employee [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)				50,000