Note 3 - Earnings Per Share - Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		12 Months Ended
		Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Net income (loss)		$ 769	$ (2,404)	$ 769	$ (2,404)
Weighted average number of common shares outstanding (in shares)		20,869,000	19,708,000	20,869,035	19,707,815
Basic net income (loss) per share (in dollars per share)		$ 0.04	$ (0.12)	$ 0.04	$ (0.12)
Non-vested stock awards (1) (in shares)	[1]			517,979	0
Weighted average number of common shares outstanding (in shares)		21,387,000	19,708,000	21,387,014	19,707,815
Diluted net income (loss) per share (in dollars per share)		$ 0.04	$ (0.12)	$ 0.04	$ (0.12)

[1] Restricted stock units granted and outstanding of 623,191 as of March 31, 2022, are excluded from the computation of diluted earnings due to the anti-dilutive effect as a result of the Company’s net loss for the three months ended March 31, 2022.