Summary of Changes in Fair Value of Company's Level 3 Liabilities Measured on Recurring Basis (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Convertible Notes Payable [Member]
Fair Value Disclosure [Line Items]
Balance beginning	$ 0	$ 534,975
Extinguishment		(118,300)
Fair value at issuance	0	189,300
Change in fair value	0	(220,975)
Balance ending	0	385,000
Series A Preferred Stock [Member]
Fair Value Disclosure [Line Items]
Balance beginning	0	56,926
Extinguishment		0
Fair value at issuance	0	0
Change in fair value	0	(56,926)
Balance ending	0	0
Common stock warrants [Member]
Fair Value Disclosure [Line Items]
Balance beginning	30,278	0
Extinguishment		0
Fair value at issuance	41,305	466,706
Change in fair value	(12,321)	(117,743)
Balance ending	$ 59,262	$ 348,963