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Subsequent Events - Narrative (Details) $ / shares in Units, $ in Thousands | Oct. 24, 2017 USD ($) $ / shares shares | Sep. 30, 2017 $ / shares shares | Dec. 31, 2016 $ / shares shares
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Subsequent Event [Line Items] |  |  |
Registered direct offering, convertible, shares issued (in shares) | shares |  | 32 | 32
Stated value (in dollars per share) | $ / shares |  | $ 0.0001 | $ 0.0001
Series B-1 Preferred Stock |  |  |
Subsequent Event [Line Items] |  |  |
Registered direct offering, convertible, shares issued (in shares) | shares |  | 0 |
Subsequent Event | Series B-1 Preferred Stock |  |  |
Subsequent Event [Line Items] |  |  |
Registered direct offering, convertible, shares issued (in shares) | shares | 2,800 |  |
Gross proceeds from issuance of stock | $ | $ 2,800 |  |
Estimated net proceeds from issuance of stock | $ | $ 2,325 |  |
Stated value (in dollars per share) | $ / shares | $ 1,000 |  |
Conversion of preferred stock (in dollars per share) | $ / shares | $ 0.28 |  |
Right of participation for future offerings, maximum percentage (up to) | 100.00% |  |
Right of participation for future offerings, period of time following closing date | 24 months |  |
Expansion of board of director members, period of time following closing date | 60 days |  |
Expansion of board of director members, number of members | $ / shares | 6 |  |
Minimum number of shares outstanding and unconverted, terms of stock or convertible securities issuance, approved written consent required (in shares) | shares | 333 |  |

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- Definition Estimated Proceeds From Issuance Of Convertible Preferred Stock, Net + References No definition available. + Details
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- Definition Expansion Of Board Of Director Members, Number Of Members + References No definition available. + Details
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- Definition Expansion Of Board Of Director Members, Period Of Time Following Closing + References No definition available. + Details
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- Definition Preferred Stock, Minimum Number Of Shares Outstanding And Unconverted, Terms Of Stock Or Convertible Securities Issuance, Approved Written Consent Required + References No definition available. + Details
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- Definition Preferred Stock, Participation Rights, Future Offerings, Maximum Percentage + References No definition available. + Details
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- Definition Preferred Stock, Participation Rights, Future Offerings, Period Of Time Following Closing Date + References No definition available. + Details
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- Definition Proceeds From Issuance Of Convertible Preferred Stock, Gross + 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://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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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