Note 8 - Stock Incentive Plan - Schedule of Stock Awards (Details) - Stock Awards [Member] - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021
Fully vested shares granted (in shares)		35,114	27,579
Weighted average grant date price per share (in dollars per share)		$ 16.55	$ 29.40
Compensation expense related to fully vested shares of common stock awards(1)	[1]	$ 581	$ 811

[1] The awards issued during the year ended December 31, 2022 were granted with respect to service performed in 2021. Approximately $600,000 of compensation expense related to the 2022 awards was accrued and recognized in 2021.