Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Liabilities (Details)	12 Months Ended
Dec. 31, 2018 USD ($)
Balance at beginning of period	$ 19,574,977
Issues
Settlements	(16,984,616)
Revaluation	(2,590,361)
Balance at end of period
Fair Value, Measurements, Recurring [Member] \| Warrants Issued August 2013 [Member]
Balance at beginning of period	5,746
Issues
Settlements
Revaluation	(5,746)
Balance at end of period
Fair Value, Measurements, Recurring [Member] \| Warrants Issued September 2016 [Member]
Balance at beginning of period	19,569,231
Issues
Settlements	(16,984,616)
Revaluation	(2,584,615)
Balance at end of period

Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Revaluations.

No definition available.

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- Definition

Amount of issuances of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ 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 (c)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- Definition

Amount of settlements of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ 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 (c)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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