Common Stock and Net Loss per Common Share - Narrative (Details) |
12 Months Ended | |
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Dec. 31, 2017
vote
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Dec. 09, 2015
$ / shares
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| Earnings Per Share [Abstract] | ||
| Number of voting rights per share | vote | 1 | |
| Convertible debt | 1.75% convertible senior notes due 2020 | ||
| Debt Instrument [Line Items] | ||
| Interest rate | 1.75% | 1.75% |
| Debt instrument, conversion price (in dollars per share) | $ / shares | $ 16.42 |
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- Definition Represents the description of voting rights of common stock. No definition available.
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- Definition The price per share of the conversion feature embedded in the debt instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition 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. No definition available.
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- References No definition available.
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