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Stockholders' Equity and Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

Equity [Abstract]

Schedule of Stock Option Plan Activity

A summary of stock option activity under the Plans for the nine months ended September 30, 2018 is as follows:

		Number of shares				Weighted Avg. Exercise Price				Weighted Avg. Remaining Contractual Life				Aggregate Intrinsic Value
Options outstanding - January 1, 2018			2,259,979			$	5.51
Options granted			295,000			$	1.79
Options exercised			-			$	-
Options cancelled/forfeit			(29,974	)		$	3.36
Options outstanding - September 30, 2018			2,525,005			$	5.10				5.79			$	631
Options exercisable			1,277,557			$	5.12				6.22			$	258
Options vested and expected to vest			2,396,105			$	5.10				5.80			$	585

Schedule of Fair Value Assumptions

The table below illustrates the fair value per share determined by the Black-Scholes-Merton option pricing model with the following assumptions used for valuing options granted to employees:

		2018
Weighted-average fair value of options granted		$	1.42
Expected terms (in years)			5.8 - 6.1
Expected volatility			76% - 126	%
Risk-free interest rate			2.05 - 3.00	%
Dividend yield			-

Schedule of Shares Outstanding and Exercisable

The following table summarizes information about stock options outstanding and exercisable at September 30, 2018:

				Options Outstanding												Options Exercisable
								Weighted
								Average				Weighted								Weighted
								Remaining				Average								Average
Range of				Number				Contractual				Exercise				Number				Exercise
Exercise Prices				Outstanding				Life in Years				Price				Exercisable				Price
	$1.47 - $2.60				851,000				8.01			$	2.04				367,921			$	2.18
	$3.04 - $4.50				547,031				7.23			$	3.96				392,138			$	3.98
	$5.49 - $6.36				101,536				4.82			$	5.98				99,658			$	5.98
	$6.64 - $8.99				1,020,408				3.29			$	7.98				412,810			$	8.15
	$42.80				5,030				1.87			$	42.80				5,030			$	42.80
	$1.47 - $42.80				2,525,005				5.79			$	5.10				1,277,557			$	5.12

Schedule of Restricted Stock Units Activity

A summary of the Company’s RSU activity and related information for the nine months ended September 30, 2018 is as follows:

		Number of RSUs				Weighted Average Grant Date Fair Value
RSUs unvested - January 1, 2018			1,298,946			$	2.42
RSUs granted			136,360				2.20
RSUs vested			(125,536	)			3.94
RSUs cancelled/forfeit			-
RSUs unvested at September 30, 2018			1,309,770			$	2.16

Schedule of Warrants Activity

A summary of warrant activity for the nine months ended September 30, 2018 is as follows:

		Number of Shares Subject to Warrants Outstanding				Weighted Avg. Exercise Price
Warrants outstanding - January 1, 2018			6,264,215			$	1.91
Granted			-
Exercised			(1,798,558	)			1.79
Expired			(115,688	)			6.94
Warrants outstanding and exercisable - September 30, 2018			4,349,969			$	1.90
Weighted average remaining contractual life of the outstanding warrants in years - September 30, 2018			2.06

Schedule of Warrants Outstanding and Warrants Exercisable

A list of the warrants outstanding as of September 30, 2018 is included in the following table:

		Warrants Outstanding										Warrants Exercisable
				Warrants				Exercise				Warrants				Expiration
Warrant Series		Issue Date			Outstanding				Price				Exercisable			Date
Lender warrants		5/11/2015			125,000			$	1.79				125,000			5/11/2025
Settlement warrants		8/16/2016			40,000			$	3.75				40,000			8/16/2021
Placement Agent Warrants		12/27/2016			210,313			$	1.79				210,313			12/27/2019
PIPE Investor Warrants		12/27/2016			3,359,270			$	1.79				3,359,270			12/27/2019
Lender warrants		7/19/2017			615,386			$	2.08				615,386			7/19/2024
					4,349,969			$	1.90				4,349,969

Schedule of Stock Based Compensation Granted to Employees Directors Consultants

The Company recorded stock-based compensation related to equity instruments granted to employees, directors and consultants as follows:

		For the				For the				For the				For the
		Three Months Ended				Three Months Ended				Nine months Ended				Nine months Ended
		September 30, 2018				September 30, 2017				September 30, 2018				September 30, 2017
Employees - selling, general and administrative		$	527			$	598			$	1,790			$	2,050
Directors - selling, general and administrative			75				50				160				155
Consultants - selling, general and administrative			-				-				108				60
Total		$	602			$	648			$	2,058			$	2,265

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