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Note 3 - Net Income Per Share - Summary of Basic and Diluted Net Income Per Share Calculations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Basic shares (in shares)	6,147,727	6,139,268	6,145,326	6,136,882
Dilutive shares (in shares)	272,550	177,050	272,550	177,050
Diluted shares (in shares)	6,420,277	6,316,318	6,417,876	6,313,932
Net income	$ 462	$ 774	$ 779	$ 1,610
Basic net income per share (in dollars per share)	$ 0.08	$ 0.13	$ 0.13	$ 0.26
Diluted net income per share (in dollars per share)	$ 0.07	$ 0.12	$ 0.12	$ 0.25

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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