Warrants and Derivative Liabilities (Tables)

3 Months Ended

Jun. 30, 2018

November 2014 Warrant

Class Of Warrant Or Right [Line Items]

Schedule of Assumptions Used to Calculate the Fair Value of Warrants

Following is a summary of the key assumptions used to calculate the fair value of the November 2014 Warrant:

Fiscal Year 18	June 30, 2018
Risk-free interest rate	2.40%
Expected annual dividend yield	—
Expected volatility	67.40%
Term (years)	1.37
Fair value	$1.6 million

Fiscal Year 17	March 31, 2018	December 31, 2017	September 30, 2017	June 30, 2017
Risk-free interest rate	2.20%	1.87%	1.49%	1.44%
Expected annual dividend yield	—	—	—	—
Expected volatility	65.86%	65.86%	65.64%	67.21%
Term (years)	1.62	1.87	2.12	2.37
Fair value	$1.1 million	$0.4 million	$0.8 million	$0.9 million