Net Income (Loss) Per Share

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

Net Income (Loss) Per Share

Basic net income (loss) per share is computed using the weighted average number of shares of Common Stock outstanding, including restricted shares which, although they are legally outstanding and have voting rights, are subject to vesting and are treated as common stock equivalents in calculating diluted income (loss) per share. Diluted net income per share is computed using the weighted average number of shares of Common Stock outstanding and dilutive potential shares of Common Stock from stock options outstanding during the period. Diluted shares outstanding also include the dilutive effect of in-the-money options, which is calculated based on the average share price for each period using the treasury stock method.

Outstanding stock options to purchase 0.4 million shares were excluded from the computation of dilutive shares for the three months ended March 31,2013 because of the net loss. Outstanding stock options to purchase 0.5 million shares were included in the computation of dilutive shares for the three months ended March 31, 2012 because of the net income. In addition, for the three months ended March 31,2013 there were no potentially dilutive shares, and in 2012, there were 6,689 potentially dilutive shares excluded from the calculation of diluted net loss per share because they were anti-dilutive. Treasury shares are excluded from the number of shares outstanding.