Warrants (Tables)

6 Months Ended

Jun. 30, 2019

Class Of Warrant Or Right [Line Items]

Schedule of Fair Value Reconciliation of Level 3 Liabilities Measured

The following table presents the fair value reconciliation of Level 3 liabilities measured at fair value during the six months ended June 30, 2019:

	Common stock warrant liability
Balance – January 1, 2019	$	3,661
Issuance of warrants		196,236
Change in fair value of derivative liabilities		(141,420	)
Balance –June 30, 2019	$	58,477

Warrant

Class Of Warrant Or Right [Line Items]

Schedule of Fair Value Reconciliation of Level 3 Liabilities Measured

Assumptions utilized in the valuation of the June 2017 Warrant, for the six months ended June 30, 2019, were as follows:

Risk-free interest rate	1.76%
Expected life	2.94 years
Expected volatility of underlying stock	61.73%
Expected dividend yield		—

Assumptions utilized in the valuation of the February 2019 Warrant for the six months ended June 30, 2019, were as follows:

Risk-free interest rate	1.74%
Expected life	3.61 years
Expected volatility of underlying stock	62.13%
Expected dividend yield		—