12.Loss per Share

Basic loss per share of common stock is computed by dividing net loss by the weighted average number of common shares outstanding during the period. Diluted loss per share of common stock is computed by dividing net loss by the weighted average number of common shares, using the two-class method.  As the Company has granted restricted stock units (“RSUs”) that both participate in dividend equivalents and do not participate in dividend equivalents, the Company has calculated loss per share pursuant to the two-class method, which is a loss allocation formula that determines loss per share for common stock and participating securities according to dividends declared and participation rights in undistributed losses. Under this method, all losses (distributed and undistributed) are allocated to common shares and participating securities based on their respective rights to receive dividends. Diluted net loss per share is calculated by dividing net loss attributable to common stockholders as adjusted for the effect of dilutive non-participating securities, by the weighted average number of common stock and dilutive common stock outstanding during the period.  Potential common shares in the diluted net loss per share computation are excluded to the extent that they would be anti-dilutive. Weighted average of potentially dilutive non-participating RSU’s were 31,389 and 11,716 in the three months ended March 31, 2019 and 2018, respectively.