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Basis of Presentation and Summary of Significant Accounting Policies - Outstanding Dilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive securities (in shares)	29,471,085	2,715,984
Convertible debt
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive securities (in shares)	766,351	428,134
Convertible preferred stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive securities (in shares)	12,376,329	0
Common stock warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive securities (in shares)	14,016,608	477,688
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive securities (in shares)	2,304,132	1,796,360
Unvested restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive securities (in shares)	7,665	13,802

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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