Net Loss Per Share

3 Months Ended

Mar. 31, 2015

Earnings Per Share [Abstract]

Net Loss Per Share

Note 10. Net Loss Per Share

Basic net loss per common share is computed by dividing net loss for the period by the weighted-average number of common shares outstanding for each respective period. Diluted net loss per common share adjusts basic net loss per common share for the dilutive effects of share-based awards as determined under the treasury stock method, our convertible senior notes as determined under the if-converted method, and other potentially dilutive instruments only in the periods in which the effect is dilutive. Due to our net loss for all periods presented, all potentially dilutive instruments were excluded because their inclusion would have been anti-dilutive. The following instruments have been excluded from the calculation of diluted net loss per share, as their effect would be anti-dilutive.

	Three Months Ended March 31,
Common shares issuable upon:	2015		2014
	(in thousands)
Conversion of convertible senior notes		1,438		1,438
Exercise or vesting of share-based awards		879		851