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Net loss per common share (Tables)

12 Months Ended

Dec. 31, 2014

Potential Dilutive Securities Outstanding

Potentially dilutive securities outstanding are summarized as follows:

		December 31,
		2014				2013				2012
Exercise of common stock options			21,541,664				24,237,940				18,674,539
Conversion of senior convertible notes into common stock			17,323,080				25,415,366				19,826,113
Exercise of common stock warrants			9,987,876				19,706,240				86,062,440
Vesting of restricted stock units			2,610,720				9,115,821				3,761,031
			51,463,340				78,475,367				128,324,123

X

- Definition

Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

+ Details

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