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Convertible Preferred Stock - Related Party Transaction (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Sep. 30, 2018 | Dec. 31, 2017
Class of Stock [Line Items] |  |  |
Shares redeemed and retired (in shares) |  | 1,202,196 |
Difference between the purchase price and the carrying value |  | $ 425 |
Share price (in dollars per share) |  | $ 1.49 |
Series B Preferred Stock |  |  |
Class of Stock [Line Items] |  |  |
Share price (in dollars per share) | $ 1.73 |  | $ 1.73
Series B Preferred Stock | Former employee |  |  |
Class of Stock [Line Items] |  |  |
Shares redeemed and retired (in shares) | 1,202,196 |  |
Purchase price | $ 2,500 |  |
Difference between the purchase price and the carrying value | $ 425 |  |
Purchase price (in dollars per share) | $ 2.04 |  |

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- Definition Stock Repurchased During Period, Convertible Preferred Stock, Retained Earnings (Accumulated Deficit) + References No definition available. + Details
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- Definition Temporary Equity, Shares Repurchased, Purchase Price + References No definition available. + 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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