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Calculations for Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net loss	$ (2,047)	$ (815)
Accretion of Series B convertible preferred stock dividends	(270)	(258)
Numerator for basic EPS - net loss available to common stockholders	$ (2,317)	$ (1,073)
Denominator:
Weighted average common shares outstanding - basic	17,521	16,837
Net loss per common share - basic	$ (0.13)	$ (0.06)

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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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