Options and Warrants - Additional Information (Detail) (USD $)	1 Months Ended		12 Months Ended
	Jul. 25, 2012	Feb. 28, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2007
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted			411,938	76,157	38,138	193,583	160,100	73,475
Vesting period			3 years
Stock options forfeited and cancelled			30,241	18,750	97,171	85,605	31,617	4,336
Warrants issued		414,650
Exercise price	$ 2.56	$ 10.44
Warrants term	5 years	5 years
Aggregate intrinsic value of the outstanding options			$ 13,846	$ 227,567
Number of common stock to be issued upon exercise of warrant	1,436,121
Employee Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted			107,832	43,750
Weighted average exercise price, Granted				$ 6.24
Stock option, term			10 years	10 years
Vesting period			3 years	3 years
Fair value of stock granted during period			$ 381,020	$ 268,451
Discount rate				3.36%
Stock option expected term				6 years
Volatility rate				192.00%
Expected dividends			0	0
Stock options forfeited and cancelled			4,678
Stock-based compensation expense			549,150	304,024
Unamortized stock-based compensation expense			1,142,135	364,064
Employee Option | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise price, Granted			$ 1.80
Discount rate			1.40%
Stock option expected term			5 years 3 months
Volatility rate			180.00%
Employee Option | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise price, Granted			$ 3.80
Discount rate			1.98%
Stock option expected term			7 years
Volatility rate			183.00%
Senior management
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted			254,756
Weighted average exercise price, Granted			$ 3.80
Stock option, term			10 years
Vesting period			3 years
Fair value of stock granted during period			$ 964,715
Discount rate			1.98%
Stock option expected term			10 years
Volatility rate			183.00%
Expected dividends			0
Aggregate number of shares commenced vesting during period			82,009
Directors and Consultants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted				32,407
Fair value of stock granted during period				$ 196,783
Expected dividends				0
Stock-based compensation expense			141,576	185,890
Unamortized stock-based compensation expense			14,770	19,658
Directors and Consultants | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise price, Granted				$ 3.80
Stock option, term				2 years
Vesting period				1 year
Discount rate				0.25%
Stock option expected term				2 years
Volatility rate				85.00%
Stock option life, expected term				2
Directors and Consultants | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise price, Granted				$ 7.12
Stock option, term				10 years
Vesting period				2 years
Discount rate				3.50%
Stock option expected term				10 years
Volatility rate				198.00%
Stock option life, expected term				5
Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares were forfeited			464,584	671,972
Aggregate intrinsic value of the outstanding Warrant			57,891	435,913
Chief Financial Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted			18,750
Weighted average exercise price, Granted			$ 2.04
Stock option, term			10 years
Fair value of stock granted during period			$ 37,096
Discount rate			1.80%
Stock option expected term			5 years 3 months
Volatility rate			185.00%
Expected dividends			0
Shares immediately vesting, percent			33.00%
Shares vesting till year end, percent			33.00%
Shares vesting next year, percent			33.00%
Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted			30,600
Weighted average exercise price, Granted			$ 3.76
Fair value of stock granted during period			$ 111,428
Discount rate			2.03%
Stock option expected term			5 years 3 months
Volatility rate			186.00%
Expected dividends			$ 0
Director | Options to purchase an aggregate of 10,000 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted			10,000
Stock option, term			10 years
Stock options vesting percentage, immediately from date of grant			50.00%
Stock options vesting percentage, remaining of period			50.00%
Director | Options to purchase an aggregate of 20, 600 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Shares, Granted			20,600
Stock option, term			10 years
Stock options vesting percentage, immediately from date of grant			50.00%
Stock options vesting percentage, remaining of period			50.00%
Stock Option Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares were forfeited			25,563
Stock Incentive Plan 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation, common stock shares for issuance			575,000
2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation, common stock shares reserved for issuance			625,000
Remaining shares available under the 2004 Plan that carryover to the 2010 Plan			793,204