Stockholders' Equity - Additional information (Detail) (USD $)	1 Months Ended		3 Months Ended	12 Months Ended		3 Months Ended		1 Months Ended	3 Months Ended	0 Months Ended	3 Months Ended					12 Months Ended
	Jan. 31, 2014	Nov. 30, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 Series A Preferred Stock [Member]	Mar. 31, 2014 Restricted Stock Units (RSUs) [Member]	Mar. 31, 2014 Midcap warrant [Member]	Nov. 30, 2013 Common Stock [Member]	Mar. 31, 2014 Common Stock [Member]	Feb. 07, 2014 Definitive Securities Purchase Agreement [Member]	Mar. 31, 2014 Definitive Securities Purchase Agreement [Member]	Mar. 31, 2014 Employees And Directors Stock Options [Member]	Mar. 31, 2014 Directors and Employees [Member]	Mar. 31, 2014 LTIP [Member]	Mar. 31, 2014 LTIP [Member] Restricted Stock Units (RSUs) [Member]	Dec. 31, 2012 LTIP [Member] Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Company Issued, RSUs						997,500							109,685
Fair market value of shares granted													$ 600,000
Term of options granted period			10 years
RSU's Vested as per Performance criteria during period			3 years												8 years
Weighted average grant date fair value of options granted			$ 5.13
Number of options granted in period with exercise price below market price			0
Unrecognized compensation cost related to non-vested share-based compensation awards granted			14,600,000
Unrecognized compensation cost related to non-vested share-based compensation awards granted year			2017
Common stock underlying warrants			48,150,060	38,188,893			515,000
Proceeds from issuance of warrants							2,600,000
Common stock underlying warrants exercised cashless							178,678
Net exercise of shares							97,549
Company's securities for shelf registration								75,000,000
Common Stock, shares issued	658,489		48,165,551	38,204,384						7,500,000
Proceeds from common stock	3,900,000		3,900,000							58,200,000	58,200,000
Universal shelf registration amount, maximum		15,000,000
Common Stock, par value			$ 0.001	$ 0.001						$ 0.001
Selling price of shares			$ 4.41							$ 8.00
Offering price per share										3.10%
Company employees, directors and affiliates stock option exercised			826,236						826,236			800,000
Proceeds from common stock			2,559,724	400,000								2,600,000
Series A Preferred shares			$ 0.001	$ 0.001
Preferred Stock, shares authorized			5,000,000	5,000,000
Shares of Series A Preferred were outstanding					2,709,300
Fair market value of shares granted			8,800,000
Options vesting Remaining period			3 years
Number of RSUs Vested			180,959			359,446									4,447
Fair market value of Previously granted RSUs vested						$ 3,200,000
Restricted stock units ("RSUs") issued to directors and key employees															1,078,000	978,000
Restricted stock units reserve for future Officers														100,000