Senior Secured Convertible Notes Payable -Related Parties - Additional Information (Detail) (USD $) Share data in Millions, unless otherwise specified	1 Months Ended	3 Months Ended		12 Months Ended
	Jun. 30, 2013	Mar. 31, 2015	Dec. 31, 2012	Dec. 31, 2006	Jun. 30, 2011	May 31, 2007	Feb. 28, 2006
Debt Instrument [Line Items]
Accrued interest		115,925
Outstanding principal balance on notes		114,000
Senior Secured Convertible Promissory Notes
Debt Instrument [Line Items]
Debt instrument principal amount	225,000				596,500		800,000
Interest rate					10.00%	12.00%	10.00%
Sale price of notes payable				800,000
Remaining debt and accrued interest was extended until September 15, 2015			178,749
Accrued interest	181,125
Common stock shares issued on conversion of debt (in shares)	7.4
Amount of notes converted into common stock shares	$ 1,628,000
Debt instrument conditional covenants amount		If an equity financing with total proceeds of more than $5,000,000 occurs while any of these notes are outstanding, holders of notes will have the right, at their option, to convert the outstanding principal and interest of the notes into shares of common stock at a discount of 30% of the price per share in the qualified financing.
Percentage of discount on price per share		30.00%