9. Loss Per Share

Basic loss per share is computed on the basis of weighted average outstanding common shares. Diluted loss per share is computed on the basis of basic weighted average outstanding common shares adjusted for the dilutive effect of stock options and other outstanding dilutive securities.

The following table reconciles the average share amounts used to compute both basic and diluted loss per share (in thousands):


	Three Months Ended March 31,
	2015		2014
Weighted average shares outstanding:
Basic weighted average shares outstanding		115,855		115,232
Add: Dilutive effect of stock options and restricted stock awards		—		—

Diluted weighted average shares outstanding		115,855		115,232

The diluted loss per share computation excludes 8.5 million and 9.4 million options to purchase shares, restricted share awards, and contingently issuable shares during the three months ended March 31, 2015 and 2014, respectively, as their effect would be anti-dilutive.

Common stock outstanding as of March 31, 2015 and December 31, 2014 was 116,712,055 and 115,637,804, respectively.