Recapitalization Transaction - Additional Information (Detail) - USD ($)		6 Months Ended
	Jun. 12, 2015	Jun. 30, 2015	Dec. 31, 2014	Aug. 05, 2013
Restructuring Cost and Reserve [Line Items]
Amount of outstanding notes converted in to common stock shares		$ 802,453
Shares of common stock shares issued on conversion				12,222,222
Cash investment of OPC		$ 1,278,501
Common stock, shares issued	304,785	5,852,646	3,969,106
Cash investment of private investor	$ 50,000	$ 50,000
OPC Partners LLC
Restructuring Cost and Reserve [Line Items]
Cash investment of OPC	$ 1,450,000
Private Investor
Restructuring Cost and Reserve [Line Items]
Cash investment of private investor		$ 50,000
Pre Reverse Split
Restructuring Cost and Reserve [Line Items]
Outstanding common stock warrant		4,000,000
Common stock shares issued on conversion of warrant		4,000,000
Shares of common stock shares issued on conversion	21,111,111	21,111,111
Common stock, shares issued	25,906,735
Pre Reverse Split | Private Investor
Restructuring Cost and Reserve [Line Items]
Common stock, shares issued		25,906,736
Series B Convertible Preferred Stock
Restructuring Cost and Reserve [Line Items]
Preferred stock, shares authorized		85	0
Series A Convertible Preferred Stock
Restructuring Cost and Reserve [Line Items]
Preferred stock, shares authorized		37,564,767	75,000,000
Series A Convertible Preferred Stock | OPC Partners LLC
Restructuring Cost and Reserve [Line Items]
Cash investment of OPC		$ 1,450,000.00
Series A Convertible Preferred Stock | Pre Reverse Split | OPC Partners LLC
Restructuring Cost and Reserve [Line Items]
Preferred stock, shares authorized		37,564,767
Patent and Technology License Termination Agreement
Restructuring Cost and Reserve [Line Items]
Additional payment for patent and technology		$ 4,500,000.00
Payments under license		$ 2,000,000
Patent and Technology License Termination Agreement | Series B Convertible Preferred Stock
Restructuring Cost and Reserve [Line Items]
Preferred stock, shares authorized		85
Convertible Note | Pre Reverse Split
Restructuring Cost and Reserve [Line Items]
Amount of outstanding notes converted in to common stock shares		$ 1,156,545
Common stock shares issued on conversion of debt (in shares)		64,258,029