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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		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net loss:	$ (1,090)	$ (1,512)	$ (2,275)	$ (3,809)
Basic (in shares)	22,017	21,936	22,006	21,927
Effect of stock -based awards (in shares)	0	0	0	0
Diluted (in shares)	22,017	21,936	22,006	21,927
Basic net loss per share (in dollars per share)	$ (0.05)	$ (0.07)	$ (0.10)	$ (0.17)
Diluted net loss per share (in dollars per share)	$ (0.05)	$ (0.07)	$ (0.10)	$ (0.17)

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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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