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Earn-out Milestone Liability (Details Narrative) - USD ($) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 20, 2014 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Fair value of Acquisition consideration |  | $ 4,500,000 |  |  |  |
Gain (loss) from change in fair value of earn out milestone liability |  |  |  | $ (3,630,861) | $ (649,701) |
EGEN Inc [Member] |  |  |  |  |  |
Future earn-out payments | $ 30,400,000 |  |  |  |  |
Fair value of Acquisition consideration | $ 13,900,000 |  |  | $ 8,900,000 | 12,500,000 | $ 13,200,000
Risk adjusted assessment of each milestone |  |  |  | 80.00% |  |
Estimated time to achieve the milestone |  |  |  | 1 year 2 months 30 days |  |
Gain (loss) from change in fair value of earn out milestone liability |  |  | $ 3,900,000 | $ 3,600,000 | $ 600,000 |
EGEN Inc [Member] | Minimum [Member] |  |  |  |  |  |
Risk adjusted assessment of each milestone | 10.00% |  |  |  | 50.00% |
Estimated time to achieve the milestone | 1 year 6 months |  |  |  | 1 year 3 months 19 days |
EGEN Inc [Member] | Maximum [Member] |  |  |  |  |  |
Future earn-out payments | $ 30,400,000 |  |  |  |  |
Risk adjusted assessment of each milestone | 67.00% |  |  |  | 80.00% |
Estimated time to achieve the milestone | 2 years 6 months |  |  |  | 1 year 6 months |
EGEN Inc [Member] |  |  |  |  |  |
Gain (loss) from change in fair value of earn out milestone liability |  |  | $ 1,400,000 |  |  |

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- Definition Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6578-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6911189&loc=d3e6405-128476 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109124213&loc=d3e6613-128477 + Details
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