SHARE-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement [Abstract]

Schedule of Share-Based Compensation Expense

The amount of share-based compensation expense recognized by the Company by line item on its consolidated statements of operations for the three and nine months ended September 30, 2019 and 2018 is as follows (in thousands):

	Three Months ended September 30,					Nine Months ended September 30,
	2019			2018		2019		2018
Research and development	$	(20	)	$	99	$	119	$	387
General and administrative	249			149		$	792	548
	$	229		$	248	$	911	$	935

Schedule of Stock Option Activity

The following table summarizes the Company’s total stock option activity, including awards granted under the 2014 Plan and inducement grants made outside of the 2014 Plan, for the nine months ended September 30, 2019:

	Number of Shares under Option (in thousands)		Weighted-average Exercise Price per Option	Weighted-average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2018	3,942		$2.12	9.1	$	57
Granted	3,986		$1.02
Exercised	(30	)	$1.50
Canceled or forfeited	(1,448	)	$1.76
Outstanding at September 30, 2019	6,450		$1.52	9.1	$	680
Exercisable at September 30, 2019	1,744		$2.42	8.1	$	84

Schedule of Weighted-Average Inputs and Assumptions in Black-Scholes Option

For the nine months ended September 30, 2019, the grant-date fair value of stock options was estimated at the time of grant using the following weighted-average inputs and assumptions in the Black-Scholes option pricing model:

Fair value of common stock	$0.69
Exercise price	$1.02
Expected term (in years)	5.98
Risk-free interest rate	2.1%
Expected volatility	78.1%
Dividend yield	—%