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Related Party Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2018 | Sep. 30, 2019 | Oct. 31, 2018 | Oct. 15, 2018 | Sep. 05, 2018
Related Party Transaction [Line Items] |  |  |  |  |
Common Stock, Shares, Issued | 15,484,411 | 16,808,758 |  |  |
Common Stock, Value, Issued | $ 15 | $ 17 |  |  |
Common Stock, Par or Stated Value Per Share | $ (0.001) | $ (0.001) |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  | 13,672,173 |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  | $ 1.38 | $ 1.38 |
Proceeds from Issuance of Common Stock | $ 12,200 |  |  |  |
Synthetic Biomics Inc [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Additional Number Of Common Stock To Be Issued |  |  |  |  | 2,420,000
Cedarssinai Medical Center [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Number Of Common Stock To Be Issued |  | 50,000 |  |  | 50,000
Cedarssinai Medical Center [Member] | Synthetic Biomics Inc [Member] |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Number Of Common Stock To Be Held By Related Party |  | 7,480,000 |  |  | 7,480,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  | 17.00% |  |  | 17.00%

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