Capital Stock - Additional Information (Detail) (USD $)	1 Months Ended			9 Months Ended	12 Months Ended		1 Months Ended
	Jun. 30, 2014	Aug. 09, 2013	May 17, 2013	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 23, 2014	Jun. 30, 2013
Stockholders Equity [Line Items]
Convertible preferred stock, par value					$ 0.001	$ 0.001
Convertible preferred stock, shares authorized					6,000,000	6,000,000
Common stock, shares authorized		150,000,000			300,000,000	150,000,000
Common stock, par value					$ 0.001	$ 0.001
Common stock, shares outstanding					172,683,342	122,448,707
Proceeds from private placement of preferred stock					$ 5,025,000	$ 12,000,000
Class Of Warrant Or Right Exercisable Number Of Warrants Or Rights			32,786,885
Stock Issued During Period Shares New Issues	18,214,936
Percentage Of Warrants Exercisable			63.00%
Percentage Of Warrants Exercisable After Shareholder Approval			37.00%
Increase In Common Stock Shares Authorized		300,000,000
Increase In Interest Expense		11,000
Warrants exercise price per share	$ 0.2745		$ 0.2745
Common Stock Shares Issued					172,683,342	122,448,707
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage				50.00%
Share Price	$ 0.2745
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	13,661,201		32,786,885
Common Stock, Value, Outstanding							5,500,000
Venture Loan [Member]
Stockholders Equity [Line Items]
Warrants exercise price per share							$ 0.1003
Class of Warrant or Right, Number of Securities Called by Warrants or Rights							2,492,523
Warrants and Rights Outstanding							261,385
Proceeds from Issuance of Long-term Debt							5,000,000
Warrants Expiration Term							10 years
Investor [Member]
Stockholders Equity [Line Items]
Stock Issued During Period Shares New Issues							50,099,700
Warrants exercise price per share							$ 0.1003
Share Price							$ 0.1003
Proceeds from Issuance of Common Stock							5,025,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights							50,099,700
Warrants and Rights Outstanding							5,200,000
Warrants Expiration Term				10 years
Danforth Advisors [Member]
Stockholders Equity [Line Items]
Common stock, par value				$ 0.25
Warrants Fair Value Disclosure				23,800	13,100
Common Stock Shares Issued				100,000
Common Stock [Member]
Stockholders Equity [Line Items]
Proceeds from private placement of preferred stock			12,000,000
Convertible Preferred Stock, Shares Issued upon Conversion					39,089,161
Stock Issued During Period Shares New Issues			43,715,847
Warrants exercise price per share			$ 0.2745
BTIG 2014 Warrants [Member]
Stockholders Equity [Line Items]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights					89,731
Warrants and Rights Outstanding							9,000
Percentage Of Warrants On Total Fair Value1							51.50%
Percentage Of Warrants On Total Fair Value2							48.40%
Percentage Of Warrants On Total Fair Value3							0.10%
Payments for Underwriting Expense					218,126
Placement Agent Warrants [Member]
Stockholders Equity [Line Items]
Allocated Share-based Compensation Expense					780,000
Warrants To Purchase Of Common Stock					2,295,082
Warrants Fair Value Disclosure		5,369,676	5,072,129					5,358,708
Warrants exercise price per share					$ 0.2745
Non cash Interest Expenses								$ 286,579