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Loss Per Share (Schedule of Anti-dilutive Securities Which could Potentially Dilute Basic Loss Per Share in Future) (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Anti-dilutive securities [Line Items]
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)	30,309,619	21,445,228	100,256,344
Option and restricted shares [Member]
Anti-dilutive securities [Line Items]
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)	30,309,619	21,445,228	17,631,953
Series A preferred shares [Member]
Anti-dilutive securities [Line Items]
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)			13,506,748
Series B preferred shares [Member]
Anti-dilutive securities [Line Items]
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)			21,564,115
Series C preferred shares [Member]
Anti-dilutive securities [Line Items]
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)			25,782,056
Series D preferred shares [Member]
Anti-dilutive securities [Line Items]
Anti-dilutive securities excluded from the calculation of diluted net loss per share (in shares)			21,771,472

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: 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

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- Definition

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+ References

No definition available.

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