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Related Party Transactions (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2016 | Jan. 31, 2016 | May 31, 2015 | Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2013 | Dec. 31, 2010
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Long-term other assets | $ 2,639,354 |  |  |  |  | $ 2,448,628 |  |  |
Contra-research and development expense |  |  |  |  |  | $ 2,200,000 |  |  |
GeneOne Life Sciences |  |  |  |  |  |  |  |  |
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Investment owned (shares) |  |  |  |  |  | 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 |  |  |  |  |  | $ 118,000 | $ 167,000 |  |
Operating expenses related to affiliated entity |  |  |  |  |  | 1,700,000 | 428,000 |  |
Accounts payable and accrued liability | 107,000 |  |  |  |  | 710,000 |  |  |
Long-term other assets | 331,000 |  |  |  |  | 347,000 |  |  |
Director |  |  |  |  |  |  |  |  |
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Term |  |  | 5 years |  |  |  |  |  |
Revenue from related parties |  |  |  |  |  |  | 614,000 |  |
Operating expenses related to affiliated entity |  |  |  |  |  | 402,000 | 543,000 |  |
Accounts receivable | 117,000 |  |  |  |  | 1,800,000 |  |  |
Expenses to reimburse |  |  | $ 3,100,000 |  |  |  |  |  |
Award |  | $ 6,100,000 |  |  |  |  |  |  |
Contra-research and development expense |  |  |  |  |  | 1,800,000 |  |  |
Accounts payable/accrued liabilities | 820,000 |  |  |  |  | 589,000 |  |  |
Plumbline Life Sciences |  |  |  |  |  |  |  |  |
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Revenue from related parties |  |  |  |  |  | 30,000 | $ 67,000 |  |
Accounts receivable | $ 370,000 |  |  |  |  | $ 400,000 |  |  |
Plumbline Life Sciences | Available-for-sale Securities |  |  |  |  |  |  |  |  |
Related-Party Transactions (Textual) [Abstract] |  |  |  |  |  |  |  |  |
Investment owned (shares) |  |  |  |  |  | 395,758 |  |  |

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