Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2019

Canceled/expired

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following table summarizes the weighted-average valuation assumptions and weighted-average grant date fair value of options granted during the periods shown below:

		Year Ended December 31,
		2019		2018
Assumptions (weighted-average)
Volatility		78%		73%
Expected term (in years)		4.0		3.2
Risk-free rate		1.9%		2.8%
Expected dividends		0.0%		0.0%
Pre-vest forfeiture rate		8.5%		8.5%
Grant date fair value of options granted	$	0.37	$	0.58

Options activity and positions

The following table summarizes activity and positions with respect to options for the periods shown below (in thousands):

				Weighted-average
				remaining		Aggregate
			Weighted-average	contractual		intrinsic
Options	Shares		exercise price	term (in years)		value
Outstanding as of December 31, 2017	5,034	$	2.94	6.6	$	53
Granted	1,229		1.16	-		-
Exercised	-		-	-		-
Forfeited or expired	(1,617)		3.51	-		-
Outstanding as of December 31, 2018	4,646		2.27	7.0		-
Granted	1,636		0.65	-		-
Exercised	-		-	-		-
Forfeited or expired	(1,178)		2.66	-		-
Outstanding as of December 31, 2019	5,104	$	1.66	7.4	$	122
Vested and expected to vest as of December 31, 2019	4,807	$	1.71	7.3	$	106
Exercisable as of December 31, 2019	2,355	$	2.45	5.6	$	3