Debt - Inputs Used In Lattice Model (Details) - Notes - Notes Due February 1, 2033 - $ / shares |
1 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|
Apr. 01, 2015 |
Jan. 31, 2013 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Debt Instrument [Line Items] | |||||
| Stock price (in dollars per share) | $ 8.63 | $ 9.30 | $ 10.05 | ||
| Conversion Rate | 14.14827% | 14.14827% | 14.14827% | 14.14827% | 14.14827% |
| Conversion price (in dollars per share) | $ 7.07 | $ 7.07 | $ 7.07 | $ 7.07 | $ 7.07 |
| Risk-free interest rate | 1.22% | 1.22% | 1.33% | ||
| Estimated stock volatility | 49.00% | 47.00% | 50.00% | ||
| Estimated credit spread | 7.61% | 7.65% | 11.42% | ||
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. 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 Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. 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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- Definition Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Risk-free interest rate assumption used in valuing an instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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