Summary of Status of Warrants Activities (Detail) - Warrant [Member]	12 Months Ended
	Dec. 31, 2016 $ / shares shares
Number of warrants
Outstanding, December 31, 2015 | shares	294,000
Granted | shares	300,000
Forfeited | shares	(294,000)
Exercised | shares	(55,365)
Outstanding, September 30, 2016 | shares	244,635
Weighted Average Exercise Price
Outstanding, December 31, 2015 | $ / shares	$ 3.61
Granted | $ / shares	1.35
Forfeited | $ / shares	0
Exercised | $ / shares	0
Outstanding, September 30, 2016 | $ / shares	$ 1.38
Weighted average Remaining Life in Years
Outstanding at beginning of period	14 days
Granted	6 months 7 days
Outstanding at end of period	6 months 7 days