Note 17 - Net Income (Loss) Per Share - Reconciliation of Basic and Diluted Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016
Net income (loss) attributable to Intelligent Systems Corporation	$ 473	$ (1,112)
Weighted average common shares outstanding (in shares)	8,766,425	8,736,299
Net income (loss) per share (in dollars per share)	$ 0.05	$ (0.13)
Net income (loss) attributable to Intelligent Systems Corporation	$ 473	$ (1,112)
Effect of dilutive potential common shares: stock options (in shares)	116,000
Total (in shares)	8,881,814	8,736,299
Net income (loss) per share (in dollars per share)	$ 0.05	$ (0.13)

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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