Basic income per share is based on the weighted average number of shares of common stock outstanding. Diluted income per share is based upon the weighted average number of common shares outstanding and dilutive common stock equivalent shares outstanding during each period.

The weighted average number of shares used to compute basic and diluted net income per share consisted of the following (in thousands):

The computation of diluted earnings per share excludes the effect of the potential exercise of stock awards, including stock options, when the average market price of the common stock is lower than the exercise price of the related options during the period. These outstanding stock awards are not included in the computation of diluted income per share because the effect would be antidilutive. For the three-month periods ended March 31, 2025 and 2024, 2,958 and zero stock awards were excluded from the computation of diluted earnings per share for this reason.