Note 9 - Net Income (Loss) Per Share of Common Stock - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net loss	$ (22,304)	$ (167)	$ (25,123)	$ (3,482)
Basic (in shares)	23,211	22,925	23,163	22,766
Effect of stock -based awards (in shares)	0	0	0	0
Diluted weighted average common stock outstanding (in shares)	23,211	22,925	23,163	22,766
Basic net loss per share (in dollars per share)	$ (0.96)	$ (0.01)	$ (1.08)	$ (0.15)
Diluted net loss per share (in dollars per share)	$ (0.96)	$ (0.01)	$ (1.08)	$ (0.15)