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Note 2 - Basis of Presentation - Basic and Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Basic shares (in shares)	6,173,544	6,147,727	6,168,446	6,145,326
Dilutive shares (in shares)	318,501	272,550	318,501	272,550
Diluted shares (in shares)	6,492,045	6,420,277	6,486,947	6,417,876
Net income	$ 416	$ 462	$ 820	$ 779
Basic net income per share (in dollars per share)	$ 0.07	$ 0.08	$ 0.13	$ 0.13
Diluted net income per share (in dollars per share)	$ 0.06	$ 0.07	$ 0.13	$ 0.12

X

- Definition

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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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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