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v3.19.2

Fair Value Measurement - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) | Jun. 30, 2019 | Dec. 31, 2018
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Proceeds Investment Agreement | $ 6,240,000 | $ 9,142,000
Level 1 [Member] |  |
Proceeds Investment Agreement |  |
Level 2 [Member] |  |
Proceeds Investment Agreement |  |
Level 3 [Member] |  |
Proceeds Investment Agreement | $ 6,240,000 | $ 9,142,000

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- Definition Proceeds investment agreement, at fair value. + References No definition available. + Details
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- Details
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