STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2016

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

Schedule of stock options and awards

	June 30, 2016
Common stock shares available for grant	653,077
Standard and market condition stock options outstanding	3,521,481
Restricted stock awards outstanding	77,540
RSU's outstanding	510,234

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.

	Six Months Ended June 30, 2016
Shares purchased under ESPP	17,711
Average price of shares purchased under ESPP	$	7.21
Intrinsic value of shares purchased under ESPP	$	23,000

Schedule of standard and market-based stock options activity

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 six months ended June 30, 2016:

	Six Months Ended June 30, 2016
Beginning outstanding balance	3,596,533
Granted	444,769
Exercised	(280,676		)
Forfeited	(219,457		)
Expired	(244,688		)
Ending outstanding balance	3,296,481
Aggregate intrinsic value of options exercised	$	700,000
Weighted average fair value of options granted	3.72

The following table sets forth activity with respect to market condition based stock options granted under the Company’s stock option plans for the six months ended June 30, 2016:

	Six Months Ended June 30, 2016
Beginning outstanding balance	200,000
Granted	75,000
Exercised	—
Canceled	(50,000		)
Ending outstanding balance	225,000
Aggregate intrinsic value of options exercised	$	—
Weighted average fair value of options granted	3.68

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

Information regarding these market condition based stock options outstanding at June 30, 2016 is summarized below:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
June 30, 2016
Options outstanding	225,000	$	8.39	6.00	$	—
Options vested and expected to vest using estimated forfeiture rates	202,048	8.38		5.99	—
Options exercisable	46,875	8.09		5.67	—

Information regarding these standard stock options outstanding at June 30, 2016 is summarized below:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
June 30, 2016
Options outstanding	3,296,481	$	8.51	4.18	$	2.5
Options vested and expected to vest using estimated forfeiture rates	3,104,511	8.46		4.08	2.5
Options exercisable	2,097,193	8.08		3.42	2.4

Schedule of restricted stock units activity

RSU activity for the six months ended June 30, 2016 was as follows:

	Six Months Ended June 30, 2016
Beginning outstanding balance	487,117
Awarded	295,880
Released	(214,222		)
Forfeited	(58,541		)
Ending outstanding balance	510,234
Weighted average grant date fair value of RSUs granted	$	8.85
Total fair value of RSUs released	1,806,000

Schedule of information regarding restricted stock units outstanding

Information regarding RSUs outstanding at June 30, 2016 is summarized below:

	Number of Shares	Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
June 30, 2016
RSUs outstanding	510,234	1.37	$	3.7
RSUs vested and expected to vest using estimated forfeiture rates	385,983	1.25	2.8

Schedule of restricted stock awards activity

Restricted stock award activity for the six months ended June 30, 2016 was as follows:

	Six Months Ended June 30, 2016
Beginning outstanding balance	21,356
Awarded	77,540
Released	(21,356		)
Forfeited	—
Ending outstanding balance	77,540
Weighted average grant date fair value of restricted stock awarded	$	6.52
Total fair value of restricted stock awards released	139,000

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 June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
Standard Stock Options
Expected life (in years)	4.5		4.6		4.5		4.7
Volatility	55	%	55	%	55	%	56	%
Interest rate	1.1	%	1.4	%	1.2	%	1.4	%
Dividend yield	N/A		N/A		N/A		N/A

	Three Months Ended June 30,		Six Months Ended June 30,
	2016	2015	2016		2015
Market Condition Based Stock Options
Expected life (in years)	N/A	N/A	7.0		7.0
Volatility	N/A	N/A	59	%	65	%
Interest rate	N/A	N/A	1.6	%	1.9	%
Dividend yield	N/A	N/A	N/A		N/A

	Three Months Ended June 30,		Six Months Ended June 30,
	2016	2015	2016		2015
Employee Stock Purchase Plan
Expected life (in years)	N/A	N/A	0.5		0.5
Volatility	N/A	N/A	53	%	45	%
Interest rate	N/A	N/A	0.5	%	0.1	%
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 loss is as follows:

	Three Months Ended June 30,				Six Months Ended June 30,
	2016		2015		2016		2015
	(In thousands)
Statement of Operations Classifications
Sales and marketing	$	332	$	288	$	560	$	552
Research and development	258		264		784		760
General and administrative	665		677		2,245		1,657
Total	$	1,255	$	1,229	$	3,589	$	2,969