STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2017

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

Schedule of stock options and awards

	March 31, 2017
Common stock shares available for grant	214,915
Standard and market condition stock options outstanding	3,616,995
Restricted stock awards outstanding	77,540
RSU's outstanding	403,935

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.

	Three Months Ended March 31, 2017
Shares purchased under ESPP	27,667
Average price of shares purchased under ESPP	$	6.34
Intrinsic value of shares purchased under ESPP	$	109,000

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 three months ended March 31, 2017:

	Three Months Ended March 31, 2017
Beginning outstanding balance	3,421,121
Granted	45,210
Exercised	(47,273		)
Forfeited	(17,768		)
Expired	(9,295		)
Ending outstanding balance	3,391,995
Aggregate intrinsic value of options exercised	$	84,000
Weighted average fair value of options granted	4.95

The following table sets forth activity with respect to market condition based stock options granted under the Company’s stock option plans for the three months ended March 31, 2017:

	Three Months Ended March 31, 2017
Beginning outstanding balance	225,000
Granted	—
Exercised	—
Canceled	—
Ending outstanding balance	225,000
Aggregate intrinsic value of options exercised	$	—

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

Information regarding these market condition based stock options outstanding at March 31, 2017 is summarized below:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
March 31, 2017
Options outstanding	225,000	$	8.39	5.25	$	—
Options vested and expected to vest using estimated forfeiture rates	212,323	8.38		5.24	—
Options exercisable	75,000	8.09		4.92	—

Information regarding these standard stock options outstanding at March 31, 2017 is summarized below:

	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
March 31, 2017
Options outstanding	3,391,995	$	8.47	3.78	$	4.2
Options vested and expected to vest using estimated forfeiture rates	3,215,683	8.45		3.67	4.1
Options exercisable	2,313,592	8.34		3.01	3.5

Schedule of restricted stock units activity

RSU activity for the three months ended March 31, 2017 was as follows:

	Three Months Ended March 31, 2017
Beginning outstanding balance	427,192
Awarded	171,015
Released	(171,559		)
Forfeited	(22,713		)
Ending outstanding balance	403,935
Weighted average grant date fair value of RSUs granted	$	8.20
Total fair value of RSUs released	1,768,000

Schedule of information regarding restricted stock units outstanding

Information regarding RSUs outstanding at March 31, 2017 is summarized below:

	Number of Shares	Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value (in millions)
March 31, 2017
RSUs outstanding	403,935	1.50	$	3.5
RSUs vested and expected to vest using estimated forfeiture rates	284,013	1.37	2.5

Schedule of restricted stock awards activity

Restricted stock award activity for the three months ended March 31, 2017 was as follows:

	Three Months Ended March 31, 2017
Beginning outstanding balance	77,540
Awarded	—
Released	—
Forfeited	—
Ending outstanding balance	77,540
Weighted average grant date fair value of restricted stock awarded	$	—
Total fair value of restricted stock awards released	—

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 March 31,
	2017		2016
Standard Stock Options
Expected life (in years)	4.6		4.5
Volatility	56	%	57	%
Interest rate	1.9	%	1.3	%
Dividend yield	N/A		N/A

	Three Months Ended March 31,
	2017		2016
Market Condition Based Stock Options
Expected life (in years)	7.0		7.0
Volatility	59	%	59	%
Interest rate	1.6	%	1.6	%
Dividend yield	N/A		N/A

	Three Months Ended March 31,
	2017		2016
Employee Stock Purchase Plan
Expected life (in years)	0.5		0.5
Volatility	50	%	53	%
Interest rate	0.7	%	0.5	%
Dividend yield	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 March 31,
	2017		2016
	(In thousands)
Statement of Operations Classifications
Sales and marketing	$	210	$	228
Research and development	336		526
General and administrative	1,011		1,580
Total	$	1,557	$	2,334