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COMMITMENTS AND CONTINGENCIES - Gain on Settlement (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2012 | Dec. 31, 2018
Gain Contingencies [Line Items] |  |  |
Potential milestone payments receivable |  | $ 6,000,000 |
Dispute settlement | $ 3,650,000 |  |
Gain related to litigation settlement | $ 1,460,000 |  | $ 1,460,000
Share of settlement percentage | 40.00% |  |
ViaGen, Inc |  |  |
Gain Contingencies [Line Items] |  |  |
Ownership percentage |  | 40.00% |

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- Definition Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14326-108349 + Details
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- Details
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