Note 8 - Basic and Diluted Net Income (Loss) Per Share (Details Textual) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Weighted Average Number of Shares Outstanding, Basic	3,899,431	3,899,431	3,899,431	3,899,431
Weighted Average Number of Shares Outstanding, Assuming Dilution	3,904,604	3,921,656	3,902,003	3,923,213