Net Loss Per Share

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Net Loss Per Share

Net Loss Per Share

Net loss per share was computed by dividing net loss by the weighted average number of common shares outstanding for the years ended December 31, 2016, 2015, and 2014:

	Year Ended December 31,
	2016			2015			2014
Net loss	$	(154,677	)	(50,424		)	(32,418		)
Shares used in computing basic and diluted net loss per share	80,976			67,671			$	65,225
Basic and diluted net loss per share	$	(1.91	)	$	(0.75	)	(0.50		)

The following outstanding Company securities, using the treasury stock method, were excluded from the above calculations of net loss per share because their impact would have been anti-dilutive due to the net losses during the years ended December 31, 2016, 2015, and 2014:

	Year Ended December 31,
	2016	2015	2014
Common stock options	1,248	1,651	1,822
Restricted stock awards	129	133	321
Restricted stock units	370	230	182
Total	1,747	2,014	2,325

As discussed in Note 6, in December 2013, the Company issued $86.3 million aggregate principal amount of 2.25% Convertible Senior Notes due 2018 (the “2.25% Senior Notes”) in an underwritten public offering. In October 2015, the Company also issued $125.0 million aggregate principal amount of 3.25% Convertible Senior Notes due 2020 (the “3.25% Senior Notes”) in an underwritten public offering. Upon any conversion, the 2.25% Senior Notes and/or 3.25% Senior Notes, (collectively the "Senior Notes") may be settled, at the Company’s election, in cash, shares of the Company’s common stock or a combination of cash and shares of the Company’s common stock. For purposes of calculating the maximum dilutive impact, it is presumed that the Senior Notes will be settled in common stock with the resulting potential common shares included in diluted earnings per share if the effect is more dilutive. The effect of the conversion of the Senior Notes is excluded from the calculation of diluted loss per share because the net loss for the year ended December 31, 2016 causes such securities to be anti-dilutive. The potential dilutive effect of these securities is shown in the chart below:

	Year Ended December 31,
	2016	2015	2014
Conversion of the Senior Notes	14,767	14,767	3,588

The effect of the contingently issuable common stock is excluded from the calculation of basic loss per share until all necessary conditions for issuance have been satisfied. Refer to Note 9 of the Notes to the Consolidated Financial Statements for further discussion.