Note 4 - Earnings Per Share ("EPS")

Basic EPS is computed by dividing net income (loss) by the basic weighted-average number of shares outstanding during the period.

Diluted EPS is computed by dividing net income by the diluted weighted-average number of shares outstanding during the period and, accordingly, reflects the potential dilution that could occur if securities or other agreements to issue common stock, such as stock options, were exercised, settled or converted into common stock and were dilutive. The diluted weighted-average number of shares used in our diluted EPS calculation is determined using the treasury stock method. For periods in which we recognize losses, the calculation of diluted loss per share is the same as the calculation of basic loss per share.

We excluded unvested restricted stock awards from the diluted weighted-average number of shares used in our diluted EPS calculation of 667,915 for the three months ended September 30, 2018 and 968,264 for the nine months ended September 30, 2018, because we had a net loss in those periods.

Unvested awards of share-based payments with rights to receive dividends or dividend equivalents, such as our restricted stock awards, are considered to be participating securities, and therefore, the two-class method is used for purposes of calculating EPS. Under the two-class method, a portion of net income is allocated to these participating securities and is excluded from the calculation of EPS allocated to common stock. Our restricted stock awards are subject to forfeiture and restrictions on transfer until vested and have identical voting, income and distribution rights to the unrestricted common shares outstanding.

Our weighted average unvested restricted stock awards outstanding were 364,056 and 667,915 for the three months ended September 30, 2019 and 2018, and 493,495 and 968,264 for the nine months ended September 30, 2019 and 2018, respectively.

The calculations of basic and diluted EPS are as follows: