Stockholders Equity (Tables)

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

Summary of Recognized Stock-based Compensation Expense for Employees and Non-employees

The Company recognized stock-based compensation for its employees and non-employees in the accompanying condensed consolidated statements of operations as follows:

	Three Months Ended September 30				Nine Months Ended September 30
	2020		2019		2020		2019
Cost of sales	$	6	$	—	$	18	$	—
Selling and marketing		234		121		647		954
General and administrative		285		190		869		694
Research and development		22		2		69		84
Total stock-based compensation	$	547	$	313	$	1,603	$	1,732

Assumptions used in Fair Value of Option Estimated at Date of Grant using Black-Scholes-Merton Option Pricing Formula

The fair value of each option is estimated at the date of grant using the Black-Scholes option pricing formula with the following assumptions:

	Three Months Ended September 30						Nine Months Ended September 30
	2020			2019			2020			2019
Expected term (in years)		6.04			4.36		5.00-6.54			4.00-5.00
Risk-free interest rate	0.38 -0.40		%		2.43	%	0.38-1.50		%	1.4-2.53		%
Expected volatility		44.30	%		50.00	%		42.81	%		49.00	%
Expected dividend rate		0	%		0	%		0	%		0	%

Summary of Stock Option Activity

The following table summarizes stock option activity under the Company’s stock option plans:

	Number of Shares			Weighted- Average Exercise Price per Share, $		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value
Outstanding – January 1, 2020		3,278,439		$	5.29		5.08	$	4,885
Options granted		1,944,000			4.20				-
Options exercised		(48,588	)		3.59
Options forfeited/cancelled		(288,654	)		15.91
Outstanding – September 30, 2020		4,885,197		$	4.27		6.01	$	1,326
Exercisable – September 30, 2020		2,894,591		$	3.82		3.77	$	1,326
Expected to vest – after September 30, 2020		1,990,606		$	4.91		9.27	$	-

Summary of Information about Stock Options Outstanding and Exercisable

The following tables summarize information about stock options outstanding and exercisable at September 30, 2020:

	Options Outstanding						Options Exercisable
Exercise Price Range	Number		Weighted average remaining contractual term (years)		Weighted average Exercise Price		Options exercisable		Weighted average remaining contractual term (years)		Weighted average Exercise Price
$0.15 - $3.64		3,323,945		5.62	$	2.77		1,988,636		2.98	$	2.24
$4.26 - $7.95		1,503,766		6.84		6.79		866,968		5.46		6.38
$12.45 - $26.10		35,011		7.97		18.45		17,511		7.80		18.96
$27.00 - $33.00		13,564		3.93		27.94		13,514		3.92		27.94
$36.00 - $94.65		8,911		6.76		46.29		7,962		6.75		45.16
		4,885,197		6.01	$	4.27		2,894,591		3.77	$	3.82