Warrant Activity (Detail) (USD $)	9 Months Ended
	Sep. 30, 2014
Number of Shares Issuable
Granted	1,216,147
Weighted Average Exercise Price
Granted	$ 1.11
Warrant
Number of Shares Issuable
Balance, Beginning	41,595,655
Granted	7,435,901
Exercised	(155,568)
Expired	(1,383,067)
Cancelled pursuant to Tender Offer	(46,276,774)
Balance, Ending	1,216,147
Weighted Average Exercise Price
Balance, Beginning	$ 0.69
Granted	$ 0.67
Exercised	$ 0.60
Expired	$ 0.88
Cancelled pursuant to Tender Offer	$ 0.67
Balance, Ending	$ 1.11