Note 9 - Stock Incentive Plan - Share Based Compensation Arrangements by Share Based Payment Award (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Stock based compensation	$ (140)	$ 409
Deferred Stock Units [Member]
Outstanding, shares (in shares)	96,704	54,197
Outstanding, grant date fair value (in dollars per share)	$ 15.69	$ 20.29
Granted and vested, shares (in shares)	13,484	9,302
Granted and vested, grant date fair value (in dollars per share)	$ 8.46	$ 10.59
Outstanding, shares (in shares)	110,188	63,499
Outstanding, grant date fair value (in dollars per share)	$ 14.8	$ 18.87
Stock based compensation	$ 99	$ 89
Intrinsic value, end of period	$ 984	$ 681