XML 123 R99.htm IDEA: XBRL DOCUMENT
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Stockholders' Equity - Registration Rights Agreement (Details) - USD ($) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2016
Debt Instrument [Line Items] |  |  |
Maximum amount of repurchase rights agreement | $ 50 |  |
Effectiveness penalty percentage | 0.25% |  |
Purchase price allocation percentage | 0.75% |  |
5% Convertible Senior Notes due 2021 |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument, interest rate | 5.00% |  | 5.00%
5% Convertible Senior Notes due 2021 | Convertible Debt |  |  |
Debt Instrument [Line Items] |  |  |
Interest rate on the 90th day following registration statement | 0.25% |  |
Interest rate on the 91st day following the registration statement | 0.50% |  |
Registration statement liquidation damages limit | 0.50% |  |
Debt instrument, interest rate | 5.00% | 0.50% |
2.5% Convertible Senior Note [Member] | Convertible Debt |  |  |
Debt Instrument [Line Items] |  |  |
Registration statement liquidation damages limit | 5.00% |  |
Debt instrument, interest rate | 2.50% |  |
Liquidation damages percent | 1.00% |  |

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- Definition Interest Rate on the 90th Day Following Registration Statement + References No definition available. + Details
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- Definition Interest Rate on the 91st Day Following the Registration Statement + References No definition available. + Details
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- Definition Liquidation Damages Percent + References No definition available. + Details
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- Definition This element represents the maximum amount of repurchase rights agreement. + References No definition available. + Details
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- Definition Registration Statement Effectiveness Penalty Percentage + References No definition available. + Details
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- Definition Registration Statement Effectiveness Purchase Price Allocation Percentage + References No definition available. + Details
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- Definition Registration Statement Liquidation Damages Limit + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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. + References No definition available. + Details
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- Details
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- Details
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- Details
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