15.	EARNINGS PER SHARE

Basic earnings per share is computed by dividing net income attributable to Intelligent Systems Corporation (numerator) by the weighted average number of common shares outstanding (denominator) during the period and excludes the dilutive effect of stock options. Diluted earnings per share gives effect to all dilutive potential common shares outstanding during a period. In computing diluted income per share, the average stock price for the period is used in determining the number of shares assumed to be reacquired under the treasury stock method for the hypothetical exercise of stock options.

The following tables represent required disclosure of the reconciliation of the income (loss) and the shares used in the basic and diluted income (loss) per share computation:

Year ended December 31, (in thousands, except per share data)	2018		2017
Basic
Net income attributable to Intelligent Systems Corporation	$	6,244	$	374
Weighted average common shares outstanding		8,796		8,766
Earnings per share	$	0.71	$	0.04

Diluted
Net income (loss) attributable to Intelligent Systems Corporation	$	6,244	$	374
Weighted average common shares outstanding		8,796		8,766
Effect of dilutive potential common shares: stock options		152		116
Total		8,948		8,882
Earnings per share	$	0.70	$	0.04

December 31, 2018

and

2017,

respectively, there were

152,000

and

116,000

dilutive stock options exercisable.