Note 7 - Earnings Per Share - Summary of Reconciliation of Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net loss — basic	$ (10,754)	$ (10,723)	$ (30,362)	$ (35,386)
Weighted average shares outstanding — basic (in shares)	21,435	20,217	21,187	20,158
Basic loss per share (in dollars per share)	$ (0.5)	$ (0.53)	$ (1.43)	$ (1.76)
Weighted average shares outstanding — diluted (in shares)	21,435	20,217	21,187	20,158
Diluted loss per share (in dollars per share)	$ (0.5)	$ (0.53)	$ (1.43)	$ (1.76)