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Note 9 - Net 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, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income (loss)	$ (739)	$ 775	$ (3,014)	$ (3,034)
Basic (in shares)	22,163	21,953	22,059	21,936
Effect of stock -based awards (in shares)	0	451	0	0
Diluted (in shares)	22,163	22,404	22,059	21,936
Basic net income (loss) per share (in dollars per share)	$ (0.03)	$ 0.04	$ (0.14)	$ (0.14)
Diluted net income (loss) per share (in dollars per share)	$ (0.03)	$ 0.03	$ (0.14)	$ (0.14)

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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