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Earnings Per Share (Notes)
 9 Months Ended
Oct. 04, 2014
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings per Share

Basic net income (loss) per share is calculated by dividing net income (loss) by the weighted-average number of common shares outstanding during the reporting period. Diluted net income (loss) per share is computed by dividing net income (loss) by the weighted average number of common shares and dilutive common share equivalents then outstanding using the treasury stock method. Common equivalent shares consist of the incremental common shares issuable upon the exercise of stock options and vesting of restricted stock awards.
Restricted stock granted by us to certain of our officers, directors, and other employees participate in dividends on the same basis as common shares and are non-forfeitable by the holder. The unvested restricted stock contains non-forfeitable rights to dividends or dividend equivalents. As a result, these share-based awards meet the definition of a participating security and are included in the weighted average number of common shares outstanding, pursuant to the two-class method, for the periods that present net income. The two-class method is an earnings allocation formula that treats a participating security as having rights to earnings that otherwise would have been available to common stockholders.
For the interim periods presented, all unexpired stock options and unvested restricted and performance share awards were not included in the computations of diluted earnings per share because the effect was either antidilutive or the performance condition was not met.