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Debt - Conversion and Earnings Per Share Impact (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 d | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Debt Instrument [Line Items] |  |  |
Reclassifications of permanent to temporary equity, debt conversion |  | $ 6,100,000 |
Dollar amount of converted notes |  | 0 | $ 0
2017 Convertible Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Convertible debt, threshold percentage of stock price trigger (exceeded) | 130.00% |  |
Convertible debt, threshold trading days (more than) | d | 20 |  |
Convertible debt, threshold consecutive trading days | 30 days |  |
Convertible notes, fair value |  | 109,500,000 |
2017 Convertible Senior Notes [Member] | Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Gain (loss) on debt conversion |  | $ 0 |

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- Definition Reclassifications of Permanent to Temporary Equity, Debt Conversion + References No definition available. + Details
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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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- Definition Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion. + References No definition available. + Details
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- Definition Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature. + References No definition available. + Details
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- Definition Fair value portion of notes payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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