Warrant Activity Under Plan (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Share Based Compensation Plans [Line Items]
Exercised		(525,000)
Warrant [Member]
Share Based Compensation Plans [Line Items]
Outstanding	10,000	10,000	85,620
Granted	0	0	0
Exercised	0	0	0
Forfeited/expired	0	0	(75,620)
Outstanding	10,000	10,000	10,000	85,620
Vested and expected to vest	10,000	10,000	10,000
Exercisable	10,000	10,000	10,000
Weighted - Average Exercise Price, Outstanding	$ 0.90	$ 0.90	$ 0.90
Weighted - Average Exercise Price, Granted	0	0	0
Weighted - Average Exercise Price, Exercised	0	0	0
Weighted - Average Exercise Price, Forfeited/expired	0	0	0.90
Weighted - Average Exercise Price, Outstanding	0.90	0.90	0.90	$ 0.90
Weighted - Average Exercise Price, Vested and expected to vest	0.90	0.90	0.90
Weighted - Average Exercise Price, Exercisable	$ 0.90	$ 0.90	$ 0.90
Weighted Average Remaining Contractual Term (In years), Outstanding	2 years 3 months 18 days	3 years 3 months 18 days	4 years 3 months 18 days	10 months 24 days
Weighted Average Remaining Contractual Term (In years), Vested and expected to vest	2 years 3 months 18 days	3 years 3 months 18 days	4 years 3 months 18 days
Weighted Average Remaining Contractual Term (In years), Exercisable	2 years 3 months 18 days	3 years 3 months 18 days	4 years 3 months 18 days
Aggregate Intrinsic Value, Outstanding	$ 17,600	$ 31,000	$ 0
Aggregate Intrinsic Value, Outstanding	3,500	17,600	31,000	$ 0
Aggregate Intrinsic Value, Vested and expected to vest	3,500	17,600	31,000
Aggregate Intrinsic Value, Exercisable	$ 3,500	$ 17,600	$ 31,000