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Note 10 - 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, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net loss	$ 775	$ 2,543	$ (3,034)	$ (1,729)
Basic (in shares)	21,953	21,997	21,936	22,091
Effect of stock -based awards (in shares)	451	431
Diluted (in shares)	22,404	22,428	21,936	22,091
Basic net income (loss) per share (in dollars per share)	$ 0.04	$ 0.12	$ (0.14)	$ (0.08)
Diluted net income (loss) per share (in dollars per share)	$ 0.03	$ 0.11	$ (0.14)	$ (0.08)

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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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