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Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 1 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Nov. 06, 2018 | Oct. 06, 2018 | Nov. 08, 2018 | Sep. 30, 2018 | Nov. 05, 2018 | Dec. 31, 2017
Subsequent Event [Line Items] |  |  |  |  |  |
Preferred stock, par value |  |  |  | $ 0.01 |  | $ 0.01
Warrants exercised |  |  |  | 74,010 |  |
Subsequent Event [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Repayments of outstanding notes |  | $ 4.9 |  |  |  |
Subsequent Event [Member] | Pre-Funded Series D Warrants [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Warrants exercised |  |  | 3,300,000 |  |  |
Subsequent Event [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Series D preferred stock convert into common stock price per share | $ 0.61 |  |  |  |  |
Subsequent Event [Member] | Series D Preferred Stock [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Preferred stock, par value |  |  |  |  | $ 0.01 |
Subsequent Event [Member] | Series D Preferred Stock [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Preferred stock, shares issued | 85 |  |  |  |  |
Preferred stock, shares purchase price per share | $ 10,000 |  |  |  |  |

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- Definition The number of each class of warrants or rights exercised during the period. + References No definition available. + Details
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- Definition Preferred stock convertible into common stock conversion price. + References No definition available. + Details
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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
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- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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