Note 4 - Basic and Diluted Net (Loss)/Income Per Share - Basic and Diluted Weighted Average Common Shares Outstanding (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Weighted average common shares outstanding, basic (in shares)	5,685	5,590
Dilutive common equivalent shares (in shares)	0	56
Weighted average common shares outstanding, diluted (in shares)	5,685	5,646