Derivative Warrant Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Outstanding Warrants Liabilities

The remaining outstanding warrants and terms as of December 31, 2018 and December 31, 2017 (split-adjusted) are as follows: (*)

Issuance date	Outstanding as of December 31, 2017		Outstanding as of December 31, 2018		Exercise Price		Exercisable as of December 31, 2018		Exercisable Through
Series A (2013)		3,895		-	$	-		-	October 2018
Series A (2013)		183		183	$	2,725		183	April 2023
Series A (2015)		683		683	$	1,363		683	April 2020
Series A (2016) (a)		625		-	$	-		-	March 2018
Series B (2016) (a)		2,770		2,770	$	40		2,770	March 2022

(*)

December 31, 2018 and 2017 warrant data represents the number of shares adjusted to retroactively reflect the 1:15 Reverse Split effected on September 4, 2018. Refer to Note 1 for further information.

a)

These warrants contain a full ratchet anti-dilution price protection so that, in most situations upon the issuance of any common stock or securities convertible into common stock at a price below the then-existing exercise price of the outstanding warrants, the warrant exercise price will be reset to the lower common stock sales price. As such anti-dilution price protection does not meet the specific conditions for equity classification, the Company is required to classify the fair value of these warrants as a liability, with changes in fair value to be recorded as income (loss) due to change in fair value of warrant liability. The estimated fair value of the Company’s warrant liability at December 31, 2018 and December 31, 2017, was approximately $8 and $28, respectively.

Schedule of Valuation of Derivative Warrant Liabilities

The following table summarizes the changes in the valuation of the derivative warrant liabilities as of December 31, 2018 and December 31, 2017:

	Series A (2011)		Series A (2013)		Series A (2013)		Series A (2015)		Series A (2016)		Series B (2016)			Total
Balances at December 31, 2017	$	-	$	-	$	-	$	-	$	(*)	$	28		$	28
Exercised		-		-		-		-		-		-			-
Expired		-		-		-		-		(*)		-			(*)
Changes in fair value		-		-		-		-		-		(20	)		(20	)
Balances at December 31, 2018	$	-	$	-	$	-	$	-	$	-	$	8		$	8

(*) Less than 1

Schedule of Fair Value Assumption

The following table summarizes the observable inputs used in the valuation of the derivative warrant liabilities as of December 31, 2018 and December 31, 2017 (split-adjusted):

	As of December 31, 2018					As of December 31, 2017
		Series A (2016)		Series B (2016)			Series A (2016)			Series B (2016)
Share price		—	$	1.72		$	15.10		$	15.10
Exercise price		—	$	40.00		$	40.00		$	40.00
Expected volatility		—		181.3	%		60	%		119	%
Risk-free interest		—		2.92	%		1.24	%		1.89	%
Dividend yield		—		—			—			—
Expected life of up to (years)		—		3.25			0.25			4.25

Schedule of Liabilities Measured on a Recurring Basis

Activity in such liabilities measured on a recurring basis is as follows:

	Derivative Warrant Liabilities
As of December 31, 2017	$	28
Revaluation of warrants		(20	)
As of December 31, 2018	$	8

	Derivative Warrant Liabilities
As of December 31, 2016	$	313
Revaluation of warrants		(285	)
Exercise warrants		(*)
As of December 31, 2017	$	28

(*) Less than 1