STOCK-BASED COMPENSATION (Tables)

9 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of stock options and awards

	September 30, 2017
Common stock shares available for grant	2,867,585
Standard and market condition stock options outstanding	3,815,784
Restricted stock awards outstanding	44,538
RSU's outstanding	627,454

Schedule of employee stock purchase plan

The intrinsic value listed below is calculated as the difference between the market value on the date of purchase and the purchase price of the shares.

	Nine Months Ended September 30, 2017
Shares purchased under ESPP	48,750
Average price of shares purchased under ESPP	$	6.74
Intrinsic value of shares purchased under ESPP	$	136,000

Schedule of standard and market-based stock options activity

The following table sets forth activity with respect to market condition based stock options granted under the Company’s stock option plans for the nine months ended September 30, 2017:

	Nine Months Ended September 30, 2017
Beginning outstanding balance	225,000
Granted	120,830
Exercised	—
Canceled	—
Ending outstanding balance	345,830
Aggregate intrinsic value of options exercised	$	—

The following table sets forth the summary of activity with respect to standard stock options granted under the Company’s stock option plans for the nine months ended September 30, 2017:

	Nine Months Ended September 30, 2017
Beginning outstanding balance	3,421,121
Granted	326,978
Exercised	(58,023		)
Forfeited	(70,306		)
Expired	(149,816		)
Ending outstanding balance	3,469,954
Aggregate intrinsic value of options exercised	$	134,000
Weighted average fair value of options granted	3.96

Schedule of information regarding standard and market condition based stock options outstanding

Information regarding these standard stock options outstanding at September 30, 2017 is summarized below:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
September 30, 2017
Options outstanding	3,469,954	$	8.21	3.62	$	3.4
Options vested and expected to vest using estimated forfeiture rates	3,314,281	8.18		3.52	3.3
Options exercisable	2,417,385	7.94		2.86	3.2

Information regarding these market condition based stock options outstanding at September 30, 2017 is summarized below:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
September 30, 2017
Options outstanding	345,830	$	8.48	5.42	$	—
Options vested and expected to vest using estimated forfeiture rates	324,033	8.47		5.38	—
Options exercisable	93,750	8.09		4.42	—

Schedule of restricted stock units activity

RSU activity for the nine months ended September 30, 2017 was as follows:

	Nine Months Ended September 30, 2017
Beginning outstanding balance	427,192
Awarded	433,015
Released	(181,392		)
Forfeited	(51,361		)
Ending outstanding balance	627,454
Weighted average fair value on grant date of RSUs	$	8.46
Total fair value of RSUs released	1,853,000

Schedule of information regarding restricted stock units outstanding

Information regarding RSUs outstanding at September 30, 2017 is summarized below:

	Number of Shares	Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
September 30, 2017
RSUs outstanding	627,454	1.40	$	5.1
RSUs vested and expected to vest using estimated forfeiture rates	507,542	1.28	4.1

Schedule of restricted stock awards activity

Restricted stock award activity for the nine months ended September 30, 2017 was as follows:

	Nine Months Ended September 30, 2017
Beginning outstanding balance	77,540
Awarded	44,538
Released	(77,540		)
Forfeited	—
Ending outstanding balance	44,538
Weighted average grant date fair value of restricted stock awarded	$	8.65
Total fair value of restricted stock awards released	671,000

Schedule of stock options, market condition based stock options and employee stock purchase plan, valuation assumptions

The assumptions used to value option grants under the Company’s stock plans were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Standard Stock Options
Expected life (in years)	4.6		4.5		4.5		4.5
Volatility	53	%	55	%	53	%	55	%
Interest rate	1.7	%	0.8	%	1.7	%	1.1	%
Dividend yield	N/A		N/A		N/A		N/A

	Three Months Ended September 30,		Nine Months Ended September 30,
	2017	2016	2017		2016
Market Condition Based Stock Options
Expected life (in years)	N/A	N/A	7.0		7.0
Volatility	N/A	N/A	55	%	59	%
Interest rate	N/A	N/A	2.0	%	1.6	%
Dividend yield	N/A	N/A	N/A		N/A

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Employee Stock Purchase Plan
Expected life (in years)	0.5		0.5		0.5		0.5
Volatility	46	%	53	%	48	%	53	%
Interest rate	1.1	%	0.4	%	0.9	%	0.4	%
Dividend yield	N/A		N/A		N/A		N/A

Schedule of stock-based compensation

Total stock-based compensation recognized in the condensed consolidated statements of operations and comprehensive income (loss) is as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
	(In thousands)
Statement of Operations Classifications
Sales and marketing	$	317	$	335	$	808	$	895
Research and development	231		257		780		1,041
General and administrative	790		622		2,485		2,867
Total	$	1,338	$	1,214	$	4,073	$	4,803