Note 9 - NET LOSS PER SHARE - Calculation of 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 PER SHARE
Net loss	$ 1,385	$ (2,407)	$ (3,912)	$ (14,488)
Basic weighted-average shares outstanding (in shares)	37,226	37,221	37,285	37,067
Effect of dilutive options and restricted stock units (in shares)	828
Diluted weighted-average shares outstanding (in shares)	38,054	37,221	37,285	37,067
Basic (in dollars per share)	$ 0.04	$ (0.06)	$ (0.10)	$ (0.39)
Diluted (in dollars per share)	$ 0.04	$ (0.06)	$ (0.10)	$ (0.39)