Net loss per share is presented in accordance with authoritative guidance which requires the presentation of “basic” and “diluted” earnings per share. Basic earnings (loss) per share is computed by dividing earnings (loss) available to common shareholders by the weighted-average shares of common stock outstanding during the period. For the purposes of calculating diluted earnings per share, the denominator includes both the weighted average number of shares of common stock outstanding during the period and the weighted average number of shares of potential dilutive shares of common stock, such as stock awards, calculated using the treasury stock method. Basic and diluted net loss per share was the same for all the periods presented as the impact of potential dilutive shares outstanding was anti-dilutive.

The following table sets forth our computation of basic and diluted net loss per common share (amounts in thousands, except per share amounts):

The number of common shares used in the computation of diluted net loss per share for the three and nine months ended October 31, 2018 and 2017 does not include the effect of the following potentially outstanding common shares because the effect would have been anti-dilutive (amounts in thousands):