Fair Value of Financial Assets and Liabilities

12 Months Ended

Dec. 31, 2017

Fair Value Disclosures [Abstract]

Fair Value of Financial Assets and Liabilities

Note 6. Fair Value of Financial Assets and Liabilities

Financial instruments, including cash and cash equivalents, accounts and other receivables, accounts payable and accrued liabilities are carried at cost, which management believes approximates fair value due to the short-term nature of these instruments. The Company measures the fair value of financial assets and liabilities based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company maximizes the use of observable inputs and minimizes the use of unobservable inputs when measuring fair value.

The Company uses three levels of inputs that may be used to measure fair value:

Level 1 - quoted prices in active markets for identical assets or liabilities 

Level 2 - quoted prices for similar assets and liabilities in active markets or inputs that are observable

Level 3 - inputs that are unobservable (for example, cash flow modeling inputs based on assumptions)

The following table presents the Company’s assets and liabilities that are measured at fair value at December 31, 2017 and 2016 ($ in thousands):

	Fair value measured at December 31, 2017
	Total carrying value at December 31,		Quoted prices in active markets		Significant other observable inputs		Significant unobservable inputs
	2017		(Level 1)		(Level 2)		(Level 3)
Assets
Marketable securities - mutual and exchange traded funds	$	3,998	$	—	$	3,998	$	—
Investment in Hoth	$	1,020	$	—	$	—	$	1,020
Liabilities
Fair value of warrant liabilities	$	822	$	—	$	—	$	822

	Fair value measured at December 31, 2016
	Total carrying value at December 31,		Quoted prices in active markets		Significant other observable inputs		Significant unobservable inputs
	2016		(Level 1)		(Level 2)		(Level 3)
Assets
Marketable securities - corporate bonds	$	6,025	$	211	$	5,814	$	—
Liabilities
Fair value of warrant liabilities	$	702	$	—	$	—	$	702

There were no transfers between Level 1, 2 or 3 for the years ended December 31, 2017 and 2016.

Level 3 Valuation Techniques

Level 3 financial liabilities consist of the warrant liabilities for which there is no current market for these securities such that the determination of fair value requires significant judgment or estimation. Changes in fair value measurements categorized within Level 3 of the fair value hierarchy are analyzed each period based on changes in estimates or assumptions and recorded as appropriate.

A significant decrease in the volatility or a significant decrease in the Company’s stock price, in isolation, would result in a significantly lower fair value measurement. Changes in the values of the warrant liabilities are recorded in “change in fair value of warrant liabilities” in the Company’s consolidated statements of operations.

On July 21, 2015, the Company issued the July 2015 Warrants to purchase aggregate of 370,263 shares of common stock to the investors in the July 2015 Financing. The July 2015 Warrants became exercisable on January 22, 2016 at an exercise price of $8.17 per share. The warrants require, at the option of the holder, a net-cash settlement following certain fundamental transactions (as defined in the July 2015 Warrants) at the Company and therefore are classified as liabilities. The July 2015 Warrants have been recorded at their fair value using the Black-Scholes valuation model, and will be recorded at their respective fair value at each subsequent balance sheet date. This model incorporates transaction details such as the Company’s stock price, contractual terms, maturity, risk free rates, as well as volatility.

On December 7, 2015, the Company issued Series A warrants to purchase up to 1,052,624 shares of common stock and Series B warrants to purchase up to 842,099 shares of common stock contained in December Offering. Series A Warrants have an exercise price of $3.80 per share and are exercisable at any time between December 7, 2015 and May 6, 2016. 852,624 shares of Series A warrants expired on May 24, 2016, and no Series A Warrants remain outstanding as of December 31, 2016. Series B Warrants have an exercise price of $4.75 per share and are exercisable at any time between December 7, 2015 and December 6, 2020. The Warrants require the issuance of registered shares upon exercise, do not expressly preclude an implied right to cash settlement and are therefore accounted for as derivative liabilities. The Company classifies these derivative warrant liabilities on the consolidated balance sheet as a current liability.

The Series A and Series B warrants have been recorded at their fair value using the Black-Scholes valuation model, and will be recorded at their respective fair value at each subsequent balance sheet date. This model incorporates transaction details such as the Company’s stock price, contractual terms, maturity, risk free rates, as well as volatility.

A summary of quantitative information with respect to the valuation methodology and significant unobservable inputs used for the Company’s warrant liabilities that are categorized within Level 3 of the fair value hierarchy at the date of issuance and as of December 31, 2017 and 2016 is as follows:

Date of valuation	December 31, 2017			December 31, 2016
Risk-free interest rate		1.98	%		0.16%-1.76	%
Expected volatility		100.00% - 132.21	%		100% - 115.35	%
Expected life (in years)		2.94 - 3.06			0.3-5.1
Expected dividend yield		—			—

The risk-free interest rate was based on rates established by the Federal Reserve. For the July 2015 Warrants, the expected volatility in the Black-Scholes model is based on an expected volatility of 100% for both periods which represents the percentage required to be used when valuing the cash settlement feature as contractually stated in the form of warrant. The general expected volatility is based on standard deviation of the Company’s underlying stock price’s daily logarithmic returns. The expected life of the warrants was determined by the expiration date of the warrants. The expected dividend yield was based upon the fact that the Company has not historically paid dividends on its common stock, and does not expect to pay dividends on its common stock in the future.

The following table sets forth a summary of the changes in the fair value of the Company’s Level 3 financial liabilities that are measured at fair value on a recurring basis for the year ended December 31, 2017 and 2016 ($ in thousands):

	Fair Value of Level 3 financial liabilities
	December 31, 2017		December 31, 2016
Beginning balance	$	702	$	2,959
Fair value adjustment of warrant liabilities		120		(2,257	)
Ending balance	$	822	$	702

The Company owns approximately 37% of common shares in Hoth as of December 31, 2017. The value of the Company’s investment in Hoth was determined based on a valuation which takes into consideration, when applicable, cash received, cost of the investment, market participant inputs, estimated cash flows based on entity specific criteria, purchase multiples paid in other comparable third-party transactions, market conditions, liquidity, operating results and other qualitative and quantitative factors. The values at which the Company’s investment in Hoth is carried on its books are adjusted to estimated fair value at the end of each quarter taking into account general economic and stock market conditions and those characteristics specific to Hoth.

The following table sets forth a summary of the changes in the fair value of the Company’s Level 3 financial assets that are measured at fair value on a recurring basis:

	Fair Value of Level 3 financial liabilities
	December 31, 2017
Beginning balance	$	—
Fair value of Hoth upon issuance		675
Change in fair value of Hoth		345
Ending balance	$	1,020

While the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.

The decision to elect the fair value option, which is irrevocable once elected, is determined on an instrument by instrument basis and applied to an entire instrument. The net gains or losses, if any, on an investment for which the fair value option has been elected, are recognized as change in fair value of investment in the Consolidated Statements of Operations.

The fair value of the investment in Hoth at December 31, 2017 was approximately $1.0 million. The underlying stock price of Hoth was estimated to be $0.15 per share based on Hoth’s fundraising activity and the Option Pricing Method Backsolve in accordance with the guidelines outlined in the American Institute of Certified Public Accountants Practice Aid, Valuation of Privately-Held-Company Equity Securities Issues as Compensation. The valuation of the underlying shares included the following assumptions: risk-free rate - 1.39%, company volatility - 75%, expected term or time to maturity - 1.25 years.