Stock Option Plans (Tables)

12 Months Ended

Dec. 31, 2014

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

Schedule of Assumptions Used to Estimate Share-Based Compensation Expense Using Black-Scholes Model

Except for the certain grants of restricted common stock and common stock options containing market conditions as described below, the Company estimated share-based compensation expense for the years ended December 31, 2013 and 2014 using the Black-Scholes model with the following weighted average assumptions:

	Year Ended December 31,
	2013		2014
Risk free interest rate	0.90-1.77	%	1.78-1.91	%
Expected dividend yield	—		—
Expected volatility	102.2-107.4	%	98.4-103.3	%
Expected term **(in years)	5.0-6.0		5.5-6.0
Forfeiture rate***	7.0	%	0% -21	%

** Expected term is calculated using SAB 107, Simplified Formula. Management has concluded that the use of the simplified method for calculating the expected term of its common stock option grants is appropriate given the lack of historical exercises and the standard terms of the employee option grants, including options are granted at-the-money, exercise is conditional only on performing service through the vesting dates, termination of service causes forfeiture of options, employees have a limited number of days to exercise options after termination of service, and options are non-transferable.

*** Forfeiture range represents 0% for directors and 21% for employees.  

Summary of Stock Option Activity

The following table summarizes the stock option activity for the 2000 Stock Plan and the 2006 Stock Plan for the years ended December 31, 2013 and 2014:

			Weighted
			Average		Remaining		Aggregate
	Number of		Exercise		Contractual		Intrinsic
	Shares		Price		Life (Years)		Value
Outstanding, December 31, 2012		1,749,310	$	2.12		8.32	$	151,919
Granted		1,115,750		1.33
Exercised		(18,023)		1.33
Expired		(253,060)		2.30
Forfeited		(305,901)		1.39
Outstanding, December 31, 2013		2,288,076	$	1.83		8.41	$	1,082
Granted		815,250		0.87
Exercised		(20,000)		1.16
Expired		(47,923)		1.35
Forfeited		(201,799)		1.24
Outstanding, December 31, 2014		2,833,604		1.62		7.91		-
Exercisable, December 31, 2014		1,498,929	$	2.07		6.94	$	-

Schedule of Options Outstanding

The following table provides additional information in regards to options outstanding as of December 31, 2014:

		Options Outstanding				Options Exercisable
				Weighted Average				Weighted Average
				Remaining				Remaining
		Number of		Contractual		Number of		Contractual
Exercise Price		Options		Term		Options		Term
$	0.67 to 0.99		730,771		9.5		68,635		9.5
	1.00 to 1.99		1,597,331		8.1		956,875		7.8
	2.00 to 2.99		288,002		6.6		255,919		6.5
	3.00 to 3.99		71,000		3.6		71,000		3.6
	4.29		11,500		2.6		11,500		2.6
	7.00		135,000		2.4		135,000		2.4
			2,833,604		7.9		1,498,929		6.9

Schedule of Stock Based Compensation Included in Results of Operations

Stock-based compensation expense - employees was classified in the results of operations as follows:

	Year Ended December 31,
	2013		2014
Cost of revenue	$	30,527	$	44,597
Selling and marketing expense		29,791		36,321
General and administrative expense		372,158		642,564
Research and development expense		41,625		52,763
Totals	$	474,101	$	776,245

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

Restricted stock compensation expense – consultants was classified in the results of operations as follows:

	Year Ended December 31,
	2013		2014
General and administrative expense	$	-	$	86,250

Schedule of Awards to Mr. Bologna

The following table summarizes these awards to Mr. Bologna:

				Intrinsic
				Value as of						Remaining
				December 31,				Options		Contractual
Type	Grant Date	Number of Awards		2014		Exercise Price		Exercisable		Term
Restricted Shares of Common Stock	12/21/2011		270,000	$	—	$	1.20		—		7.0
Options	12/21/2011		600,000	$	—	$	1.20		600,000		7.0
Options	12/21/2011		300,000	$	—	$	1.20		300,000		7.0