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Net loss per common share (Tables)

12 Months Ended

Dec. 31, 2013

Potential Dilutive Securities Outstanding

Potentially dilutive securities outstanding are summarized as follows:

		December 31,
		2011				2012				2013
Exercise of common stock options			10,082,351				18,674,539				24,237,940
Conversion of senior convertible notes into common stock			19,826,113				19,826,113				25,415,366
Exercise of common stock warrants			—				86,062,440				19,706,240
Vesting of restricted stock units			4,140,388				3,761,031				9,115,821
			34,048,852				128,324,123				78,475,367

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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