Options Outstanding (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercisable, Number of Shares Issuable	6,510,000
Not vested, Number of Shares Issuable	1,290,000
Balance, Number of Shares Issuable	7,800,000	4,128,128
Exercisable, Weighted-Average Exercise Price	$ 0.66
Not vested, Weighted-Average Exercise Price	0.69
Balance, Weighted-Average Exercise Price	$ 0.66	$ 1.04
Exercisable, Weighted-Average Remaining Term (Years)	3 years 6 months
Not vested, Weighted-Average Remaining Term (Years)	3 years 9 months 18 days
Balance, Weighted-Average Remaining Term (Years)	3 years 6 months
Exercisable, Aggregate Intrinsic Value	$ 0
Not vested, Aggregate Intrinsic Value	0
Balance, Aggregate Intrinsic Value	$ 0