Changes in Liabilities with Significant Unobservable Inputs (Level 3) (Detail) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance	$ 1,061,839		$ 1,104,423
Elimination of liability on conversion	(49,235)
Change in estimated fair value	677,584		154,898
Balance	1,690,188		1,061,839
Warrant
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance	764,958		803,484
Elimination of liability on conversion	0
Change in estimated fair value	458,643		(38,526)
Balance	1,223,601		764,958
Derivative Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance	296,881
Elimination of liability on conversion	(49,235)
Change in estimated fair value	218,941	[1]
Balance	$ 466,587

[1] Included in the Statement of Operations on the line "Change in fair value of derivative liabilities."