Note 7 - Stock-Based Compensation

6 Months Ended

Jun. 30, 2015

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

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

7. Stock-Based Compensation

The following table summarizes the stock-based compensation expense, net of amounts capitalized, we recorded in our Unaudited Condensed Consolidated Statements of Operations for the three and six-month periods ended June 30, 2015 and 2014, respectively, by classification:

	Three Months Ended June 30,				Six Months Ended June 30,
Statement of Operations Classification	2015		2014		2015		2014
Costs of revenue	$	2,000	$	3,700	$	5,000	$	3,100
Selling and marketing expense		29,500		21,000		58,800		26,900
General and administrative expense		130,500		109,200		298,600		246,400
Research and development expense		28,100		26,600		50,000		53,800
	$	190,100	$	160,500	$	412,400	$	330,200

The following table presents summaries of the status and activity of our stock option awards for the three-month period ended June 30, 2015.

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Terms (Years)		Aggregate Intrinsic Value
Outstanding – March 31, 2015		10,210,499		$	0.18
Granted		—			—
Exercised		(12,500	)		0.06
Forfeited or expired		(476,818	)		0.22
Outstanding – June 30, 2015		9,721,181		$	0.18		7.17	$	32,200

The following table presents summaries of the status and activity of our stock option awards for the six-month period ended June 30, 2015.

	Number of Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Terms (Years)		Aggregate Intrinsic Value
Outstanding – December 31, 2014		10,287,999		$	0.18
Granted		—			—
Exercised		(90,000	)		0.05
Forfeited or expired		(476,818	)		0.22
Outstanding – June 30, 2015		9,721,181		$	0.18		7.17	$	32,200

Of the options outstanding as of June 30, 2015, 6,757,047 were vested, 2,928,793 were estimated to vest in future periods and 35,341 were estimated to be forfeited prior to their vesting. As of June 30, 2015, there was approximately $244,200 of total unrecognized compensation cost, net of estimated forfeitures, related to unvested stock options. Such cost is expected to be recognized over a weighted-average period of approximately nine months.

All options are exercisable immediately upon grant. Options vest ratably, generally over a 33-month period commencing in the fourth month after the grant date. We have the right to repurchase common stock issued upon the exercise of an option upon an optionee’s termination of service to us prior to full vesting at the option’s exercise price.

The following table presents summaries of the status and activity of our restricted stock awards for the three-month period ended June 30, 2015. We include the common stock underlying the restricted stock award in shares outstanding once such common stock has vested and the restriction has been removed (“releases” or “released”). The common stock vests ratably, generally over a 33-month period commencing in the fourth month after the award date.

	Number of Shares			Weighted Average Grant Date Fair Value		Weighted Average Remaining Recognition Period (Years)		Unrecognized Compensation Cost Remaining
Unreleased – March 31, 2015		4,022,184		$	0.17
Awarded		—			—
Released		(517,834	)		0.19
Forfeited		(59,970	)		0.17
Unreleased – June 30, 2015		3,444,380		$	0.17		2.10	$	498,100

The following table presents summaries of the status and activity of our restricted stock awards for the six-month period ended June 30, 2015.

	Number of Shares			Weighted Average Grant Date Fair Value		Weighted Average Remaining Recognition Period (Years)		Unrecognized Compensation Cost Remaining
Unreleased – December 31, 2014		4,314,983		$	0.18
Awarded		225,000			0.16
Released		(955,412	)		0.19
Forfeited		(140,191	)		0.17
Unreleased – June 30, 2015		3,444,380		$	0.17		2.10	$	498,100

As of June 30, 2015, there was approximately $498,100 of total unrecognized compensation cost, net of estimated forfeitures, related to unreleased restricted stock awards. That cost is expected to be recognized over a weighted-average period of approximately twenty-four months.