Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Changes in Common Stock Options

The following summarizes the changes in common stock options for the six months ended June 30, 2018:

	Options			Weighted Average Exercise Price
Outstanding at December 31, 2017		5,040,450		$	0.97
Granted		526,500		$	0.43
Exercised		(173,130	)	$	0.43
Forfeited		(931,550	)	$	1.88
Outstanding at June 30, 2018		4,462,270		$	0.74
Options exercisable at June 30, 2018		1,927,845		$	1.12