STOCK BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2019

Schedule of Share-Based Compensation Activity

The following table is a summary of stock option activity during the six months ended June 30, 2019:



	Number of Options Outstanding	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (in years)	Aggregate Intrinsic Value (in thousands)
Outstanding 2013 & 2014 Plans – December 31, 2018	2,486,646	$	1.89	7.00	$	1,550
Options granted	50,832	3.02		9.84	—
Options exercised	—	—		—	—
Options forfeited	—	—		—	—
Outstanding – June 30, 2019	2,537,478	$	1.91	6.60	$	913
Exercisable – June 30, 2019	1,632,565	$	1.69	5.51	$	888

The following table is a summary of restricted stock units award activity during the six months ended June 30, 2019:



	Six Months Months ended
	June 30, 2019
	Number of Shares		Weighted Average Grant Date Fair Value
Non-vested at beginning of period	315,292		$	2.26
Shares vested	(41,864	)	2.31
Shares granted	33,113		3.02
Non-vested	306,541		$	2.26

Schedule of Weighted-Average Black-Scholes Option Pricing Model Assumptions

The assumptions used in the Black-Scholes option-pricing model and the weighted-average grant date fair value of the option awards for the periods presented were as follows:



	Three and Six Months ended June 30
	2019		2018
Volatility		65.01%		104.99%
Expected term (in years)		6		6
Risk-free rate		2.37%		2.24%
Expected dividend yield		—		—
Weighted-average grant date fair value per option	$	1.76	$	2.24