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Fair Value of Financial INstruments (Tables)
6 Months Ended
Jun. 30, 2018
Fair Value Disclosures [Abstract]  
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation
The following table presents changes in the liability-classified warrant measured at fair value using Level 3 inputs:

 
Fair Value Measurements of Level 3 liability classified warrant
Warrant liability at December 31, 2017
$
11,466,162

Increase in fair value of warrant liability
2,942,829

Warrant liability at June 30, 2018
$
14,408,991