8.	STOCK-BASED COMPENSATION

Stock Options and Awards

The Company’s equity incentive program is a long-term retention program that is intended to attract, retain, and provide incentives for talented employees, consultants, officers, and directors and to align stockholder and employee interests. The Company may grant time based options, market condition based options, stock appreciation rights, restricted stock, restricted stock units (“RSUs”), performance shares, performance units, and other stock-based or cash-based awards to employees, officers, directors, and consultants. Under this program, stock options may be granted at prices not less than the fair market value on the date of grant for stock options. These options generally vest over four years and expire from five to ten years from the date of grant. In addition to time based vesting, market condition based options are subject to a market condition: the closing price of the Company stock must exceed a certain level for a number of trading days within a specified timeframe or the options will be cancelled before the expiration of the options. Restricted stock generally vests over one year. RSUs generally vest over three years. Awards granted other than an option or stock appreciation right reduce the common stock shares available for grant under the program by 1.75 shares for each share issued.


	March 31, 2015
Common stock shares available for grant		1,440,213
Common stock options outstanding		3,875,153
Restricted stock awards outstanding		35,364
Restricted stock units outstanding		565,148

Employee Stock Purchase Plan

The Company has an Employee Stock Purchase Plan (“ESPP”). Under the ESPP, eligible employees may purchase common stock through payroll deductions at a purchase price of 85% of the lower of the fair market value of the Company’s stock at the beginning of the offering period or the purchase date. Participants may not purchase more than 2,000 shares in a six-month offering period or purchase stock having a value greater than $25,000 in any calendar year as measured at the beginning of the offering period. A total of 1,000,000 shares of common stock have been reserved for issuance under the ESPP. As of March 31, 2015, 581,451 shares had been purchased since the inception of the ESPP in 1999. Under ASC 718-10, the ESPP is considered a compensatory plan and the Company is required to recognize compensation cost related to the fair value of the award purchased under the ESPP. Shares purchased under the ESPP for the three months ended March 31, 2015 are listed below. Shares purchased under the ESPP for the three months ended March 31, 2014 are 17,670. 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, 2015
Shares purchased under ESPP		23,713
Average price of shares purchased under ESPP	$	8.00
Intrinsic value of shares purchased under ESPP	$	33,000

Summary of Standard Stock Options

The following table sets forth the summary of standard option activity under the Company’s stock option plans for the three months ended March 31, 2015 and year ended December 31, 2014:


	Three Months Ended March 31, 2015			Year Ended December 31, 2014
Beginning outstanding balance		3,486,157			3,227,167
Granted		260,175			604,620
Exercised		(10,862	)		(205,744	)
Forfeited		(60,317	)		(102,454	)
Expired		0			(37,432	)

Ending outstanding balance		3,675,153			3,486,157

Aggregate intrinsic value of options exercised	$	30,000		$	1,125,000
Weighted average fair value of options granted		3.84			4.93

The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted price of the Company’s common stock for the options that were in-the-money.

Information regarding these standard stock options outstanding at March 31, 2015 and December 31, 2014 is summarized below:


	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (In millions)
December 31, 2014
Options outstanding		3,486,157	$	8.30		4.85	$	6.6
Options vested and expected to vest using estimated forfeiture rates		3,319,308		8.21		4.80		6.6
Options exercisable		2,023,024		7.18		4.26		6.0
March 31, 2015
Options outstanding		3,675,153	$	8.21		4.68	$	6.3
Options vested and expected to vest using estimated forfeiture rates		3,529,945		8.16		4.62		6.2
Options exercisable		2,270,159		7.50		4.02		5.6

Summary of Market Condition Based Stock Options

The following table sets forth the summary of the market-based option activity under the Company’s stock option plans for the three months ended March 31, 2015 and year ended December 31, 2014:


	Three Months Ended March 31, 2015		Year Ended December 31, 2014
Beginning outstanding balance		50,000		0
Granted		150,000		50,000
Exercised		0		0
Forfeited and cancelled		0		0

Ending outstanding balance		200,000		50,000

Aggregate intrinsic value of options exercised	$	0	$	0
Weighted average fair value of options granted		3.64		5.71

Information regarding these market condition based stock options outstanding at March 31, 2015 and December 31, 2014 is summarized below:


	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (In millions)
December 31, 2014
Options outstanding		50,000	$	11.94		6.15	$	0.0
Options vested and expected to vestusing estimated forfeiture rates		45,430		11.94		6.15		0.0
Options exercisable		0		0.00		0.00		0.0
March 31, 2015
Options outstanding		200,000	$	9.05		6.67	$	0.2
Options vested and expected to vestusing estimated forfeiture rates		130,330		9.26		6.61		0.1
Options exercisable		0		0.00		0.00		0.0

Summary of Restricted Stock Units

RSU activity for the three months ended March 31, 2015 and year ended December 31, 2014 was as follows:


	Three Months Ended March 31, 2015			Year Ended December 31, 2014
Beginning outstanding balance		564,891			668,056
Awarded		273,290			265,630
Released		(261,168	)		(317,970	)
Forfeited		(11,865	)		(50,825	)

Ending outstanding balance		565,148			564,891

Weighted average grant date fair value of RSUs granted	$	8.09		$	11.35
Total fair value of RSUs released		2,185,000			3,491,000

Information regarding RSUs outstanding at March 31, 2015 and December 31, 2014 is summarized below:


	Number of Shares		Weighted Average Remaining Contractual Life (years)		Aggregate Intrinsic Value (In millions)
December 31, 2014
RSUs outstanding		564,891		0.84	$	5.3
RSUs vested and expected to vestusing estimated forfeiture rates		502,411		0.80		4.8
March 31, 2015
RSUs outstanding		565,148		1.54	$	5.2
RSUs vested and expected to vestusing estimated forfeiture rates		437,437		1.48		4.0

Summary of Restricted Stock Awards

Restricted stock award activity for the three months ended March 31, 2015 and year ended December 31, 2014 was as follows:


	Three Months Ended March 31, 2015		Year Ended December 31, 2014
Beginning outstanding balance		35,364		44,000
Awarded		0		35,364
Released		0		(44,000	)
Forfeited		0		0

Ending outstanding balance		35,364		35,364

Weighted average grant date fair value of restricted stock awarded	$	0	$	10.97
Total fair value of restricted stock awards released		0		483,000

Stock Plan Assumptions

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


	Three Months Ended March 31,
	2015			2014
Standard Stock Options
Expected life (in years)		4.7			4.7
Volatility		56	%		57	%
Interest rate		1.4	%		1.4	%
Dividend yield		N/A			N/A


	Three Months Ended March 31,
	2015			2014
Market Condition Based Stock Options
Expected life (in years)		7.0			7.0
Volatility		65	%		66	%
Interest rate		1.9	%		2.2	%
Dividend yield		N/A			N/A


	Three Months Ended March 31,
	2015			2014
Employee Stock Purchase Plan
Expected life (in years)		0.5			0.5
Volatility		45	%		39	%
Interest rate		0.1	%		0.1	%
Dividend yield		N/A			N/A

Compensation Costs

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


	Three Months Ended March 31,
	2015		2014
	(In thousands)
Statement of Operations Classifications
Sales and marketing	$	264	$	230
Research and development		496		475
General and administrative		980		878

Total	$	1,740	$	1,583

As of March 31, 2015, there was $9.2 million related to stock options, restricted stock awards, and RSUs of unrecognized compensation cost, adjusted for estimated forfeitures, granted to the Company’s employees and directors. This cost will be recognized over an estimated weighted-average period of approximately 2.98 years for standard options, 3.67 years for market condition based options, 2.23 years for RSUs, and 0.18 years for restricted stock awards. Total unrecognized compensation cost will be adjusted for future changes in estimated forfeitures.