Summary of Warrants Outstanding and Exercisable (Detail) - Warrant	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Share Based Compensation Plans [Line Items]
Warrants Outstanding, Number Outstanding | shares	10,000
Warrants Outstanding, Weighted Average Remaining Contractual Life (Years)	2 years 3 months 18 days
Warrants Outstanding, Weighted Average Exercise Price | $ / shares	$ 0.90
Warrants Exercisable, Number Exercisable | shares	10,000
Warrants Exercisable Weighted Average Exercise Price | $ / shares	$ 0.90
Exercise Price 0.90
Share Based Compensation Plans [Line Items]
Warrants Outstanding, Number Outstanding | shares	10,000
Warrants Outstanding, Weighted Average Remaining Contractual Life (Years)	2 years 3 months 18 days
Warrants Outstanding, Weighted Average Exercise Price | $ / shares	$ 0.90
Warrants Exercisable, Number Exercisable | shares	10,000
Warrants Exercisable Weighted Average Exercise Price | $ / shares	$ 0.90