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Fair Value Measurement - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Proceeds investment agreement | $ 6,417,000 | $ 9,142,000
Secured convertible notes | 1,606,305 |
Liabilities, fair value | 8,023,305 | 9,142,000
Level 1 [Member] |  |
Proceeds investment agreement |  |
Secured convertible notes |  |
Liabilities, fair value |  |
Level 2 [Member] |  |
Proceeds investment agreement |  |
Secured convertible notes |  |
Liabilities, fair value |  |
Level 3 [Member] |  |
Proceeds investment agreement | 6,417,000 | $ 9,142,000
Secured convertible notes | 1,606,305 |
Liabilities, fair value | $ 8,023,305 |

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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Carrying value as of the balance sheet date of the portion of long-term, collateralized debt obligations due within one year or the operating cycle, if longer. Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(1)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(13)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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