Net income per share is computed on the basis of the weighted average number of common shares outstanding each year. Diluted earnings per share from continuing operations includes the dilutive effect of stock options and other stock units. The following table sets forth the computation of basic and diluted earnings per share:


	Three months ended June 30				Six months ended June 30
	2010		2011		2010		2011
Numerator
Numerator for basic and diluted earnings per share — income from continuing operations available to common stockholders	$	18,951	$	11,523	$	31,287	$	27,197


Denominator
Denominator for basic earnings per share — weighted average shares outstanding		61,292		62,196		61,104		62,024

Effect of dilutive securities — stock options and other stock units		1,317		1,012		1,349		1,172


Denominator for diluted earnings per share — adjusted weighted average shares outstanding		62,609		63,208		62,453		63,196


Basic earnings per share:
Income from continuing operations	$	0.31	$	0.19	$	0.51	$	0.44
Income from discontinued operations, net of income taxes		0.41		—		0.40		—

Net income attributable to Cooper Tire & Rubber Company common stockholders	$	0.72	$	0.19	$	0.91	$	0.44


Diluted earnings per share:
Income from continuing operations	$	0.30	$	0.18	$	0.50	$	0.43
Income from discontinued operations, net of income taxes		0.40		—		0.39		—

Net income attributable to Cooper Tire & Rubber Company common stockholders	$	0.70	$	0.18	$	0.89	$	0.43

Options to purchase shares of the Company’s common stock not included in the computation of diluted earnings per share because the options’ exercise prices were greater than the average market price of the common shares were 458 and 443 at June 30, 2011 and 2010, respectively.