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Related Party Transactions (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2016 | Jan. 31, 2016 | May 31, 2015 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2013 | Dec. 31, 2010
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Long-term other assets | $ 2,639,354 |  |  |  |  | $ 2,625,659 |  | $ 2,625,659 |  |  |
Contra-research and development expense |  |  |  |  |  | $ 2,600,000 |  | $ 6,700,000 |  |  |
GeneOne Life Sciences |  |  |  |  |  |  |  |  |  |  |
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Investment owned (shares) |  |  |  |  |  | 1,644,155 |  | 1,644,155 |  |  |
Payment received for license granted |  |  |  |  |  |  |  |  |  |  | $ 3,000,000
Term |  |  |  |  |  |  |  |  |  | 20 years |
Milestone-based ownership target |  |  |  | 35.00% | 35.00% |  |  |  |  |  |
Proceeds from sale of intangible assets | 1,000,000 |  |  |  |  |  |  |  |  |  |
Revenue from related parties |  |  |  |  |  | $ 155,000 | $ 104,000 | $ 305,000 | $ 426,000 |  |
Operating expenses related to affiliated entity |  |  |  |  |  | 1,900,000 | 704,000 | 4,700,000 | 1,900,000 |  |
Accounts receivable | 0 |  |  |  |  | 74,000 |  | 74,000 |  |  |
Accounts payable and accrued liability | 107,000 |  |  |  |  | 310,000 |  | 310,000 |  |  |
Long-term other assets | 331,000 |  |  |  |  | 312,000 |  | 312,000 |  |  |
Director |  |  |  |  |  |  |  |  |  |  |
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Term |  |  | 5 years |  |  |  |  |  |  |  |
Revenue from related parties |  |  |  |  |  |  | 708,000 |  | 2,400,000 |  |
Operating expenses related to affiliated entity |  |  |  |  |  | 615,000 | 596,000 | 1,400,000 | 1,600,000 |  |
Accounts receivable | 117,000 |  |  |  |  | 1,000,000 |  | 1,000,000 |  |  |
Expenses to reimburse |  |  | $ 3,100,000 |  |  |  |  |  |  |  |
Award |  | $ 6,100,000 |  |  |  |  |  |  |  |  |
Contra-research and development expense |  |  |  |  |  | 952,000 |  | 3,200,000 |  |  |
Accounts payable/accrued liabilities | 820,000 |  |  |  |  | 381,000 |  | 381,000 |  |  |
Plumbline Life Sciences |  |  |  |  |  |  |  |  |  |  |
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue from related parties |  |  |  |  |  | 30,000 | $ 25,000 | 88,000 | $ 113,000 |  |
Accounts receivable | $ 370,000 |  |  |  |  | $ 459,000 |  | $ 459,000 |  |  |
Plumbline Life Sciences | Available-for-sale Securities |  |  |  |  |  |  |  |  |  |  |
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Investment owned (shares) |  |  |  |  |  | 395,758 |  | 395,758 |  |  |

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