Net Loss per Share

The Company applies the two-class method to calculate its basic and diluted net loss per share as both classes of its voting shares are participating securities with equal participation rights and are entitled to receive dividends on a share for share basis.

The following table summarizes the reconciliation of the basic weighted average number of shares outstanding and the diluted weighted average number of shares outstanding.



	Years ended
	December 31, 2017	December 31, 2016
Basic and diluted weighted average number of shares outstanding	95,774,897	83,988,597
The following items have been excluded from the diluted weighted average number of shares outstanding because they are anti-dilutive:
Stock options	7,353,546	9,899,393
Restricted share units	2,498,678	2,360,817
	9,852,224	12,260,210

In the years ended December 31, 2017 and 2016, the Company was in a loss position and therefore diluted loss per share is equal to basic loss per share.