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Loss Per Share, Computation of Anti-Dilutive Shares (Details) - $ / shares	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares (in shares)	1,936,618	2,078,556
Average exercise price (in dollars per share)	$ 21.17	$ 21.16
Series A Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares (in shares)	1,432,622	1,438,289
Average exercise price (in dollars per share)	$ 8.51	$ 8.55
Series B Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares (in shares)	1,942,323	1,947,234
Average exercise price (in dollars per share)	$ 9.37	$ 9.43
Restricted Share Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares (in shares)	6,965,668	5,700,695
Average exercise price (in dollars per share)	$ 10.69	$ 7.28

X

- Definition

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+ References

No definition available.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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