Net Income Per Share

6 Months Ended

Jun. 30, 2012

Net Income Per Share [Abstract]

Net Income Per Share

4. Net Income Per Share

Basic net income per share is computed by dividing net income available to common stockholders by the weighted-average number of common shares outstanding. Common shares outstanding includes common stock issued less treasury shares plus restricted stock units for which no future service is required as a condition to the delivery of the underlying common stock. Diluted net income per share is computed by dividing net income attributable to common stockholders by the weighted-average number of common shares outstanding plus all dilutive potential common shares outstanding during the period. All dilutive potential common shares outstanding consider common stock deliverable pursuant to stock options and nonvested restricted stock units. There were no dilutive effects for the three and six months ended June 30, 2012 and 2011. The following table presents securities outstanding that could potentially dilute basic EPS in the future that were not included in the computation of diluted EPS because they were antidilutive for the three and six month periods ended June 30, 2012 and 2011:

	Three months ended June 30,				Six months ended June 30,
	2012		2011		2012		2011
Stock options		850,308		1,721,735		868,990		1,753,883
Restricted stock units		71,296		461,589		72,060		467,403