Stock-Based Awards and Per Share Information (Tables)

6 Months Ended

Jun. 30, 2015

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Income Statement Classification of Compensation Expense

The following table summarizes the income statement classification of compensation expense associated with share-based payments (in thousands):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2015		2014		2015		2014
Cost of revenue	$	62	$	41	$	138	$	87
Sales and marketing		194		112		487		237
General and administrative		612		101		848		216
Engineering and development		67		22		162		46
	$	935	$	276	$	1,635	$	586

Assumptions on Estimation of Stock Option Fair Values

The stock option fair values, under the 2002 Plan, were estimated using the Black-Scholes option-pricing model with the following assumptions:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2015		2014		2015		2014
Expected term	5.5 years		4.2 years		5.9 years		3.8 years
Volatility	87.70%		96.50%		91.01%		97.91%
Annual dividend per share	$	—	$	—	$	—	$	—
Risk-free interest rate	1.54%		1.69%		1.65%		1.66%

Summary of Option Activity

A summary of option activity under the 2002 Plan for the six months ended June 30, 2015 is as follows:

						Weighted Average
				Weighted		Remaining		Aggregate
				Average		Contractual		Intrinsic
	Shares			Exercise Price		Term (Years)		Value(1)
Options outstanding at December 31, 2014		3,391,000		$	3.11		2.97	$	1,063,000
Granted		3,096,000		$	2.35
Exercised		(38,000	)	$	1.15
Forfeited, cancelled, or expired		(329,000	)	$	3.16
Options outstanding at June 30, 2015		6,120,000		$	2.74		5.95	$	113,000
Options exercisable at June 30, 2015		2,862,000		$	3.05		2.64	$	94,000
Vested options expired during the quarter    ended June 30, 2015		113,000		$	3.09

(1) The intrinsic value calculation does not include negative values. This can occur when the fair market value on the reporting date is less than the exercise price of the grant.

Cash Proceeds Along with Fair Value Disclosures Related to Grants, Exercises, and Vested Options

Cash proceeds along with fair value disclosures related to grants, exercises, and vested options under the 2002 Plan are provided in the following table (in thousands, except per share amounts):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2015		2014		2015		2014
Proceeds from stock options exercised	$	—	$	8	$	44	$	255
Tax benefit related to stock options    exercised (1)	N/A		N/A		N/A		N/A
Intrinsic value of stock options exercised (2)	$	—	$	12	$	52	$	95
Weighted-average fair value of options granted    during period	$	1.42	$	1.32	$	1.70	$	1.73
Total fair value of shares vested during    the period	$	440	$	302	$	733	$	648

(1) Excess tax benefits received related to stock option exercises are presented as financing cash inflows. The Company currently does not receive a tax benefit related to the exercise of stock options due to the Company’s net operating losses.

(2) The intrinsic value of stock options exercised is the amount by which the market price of the stock on the date of exercise exceeded the market price of the stock on the date of grant.

Summary of Warrant Activity

A summary of warrant activity for the six months ended June 30, 2015 is as follows:

			Weighted
			Average
	Shares		Exercise Price
Warrants outstanding at December 31, 2014		888,000	$	6.04
Granted		—
Exercised		—
Forfeited, cancelled, or expired		—
Warrants outstanding at June 30, 2015		888,000	$	6.04
Warrants exercisable at June 30, 2015		753,000	$	6.40
Vested warrants expired during the quarter    ended June 30, 2015		—	N/A