Summary of Warrants and Related Information (Detail) - Warrant	3 Months Ended
	Mar. 31, 2016 $ / shares shares
Warrants
Beginning balance | shares	20,000
Ending balance | shares	20,000
Exercisable at March 31, 2016 | shares	20,000
Weighted Average Exercise Price
Beginning balance | $ / shares	$ 6.64
Ending balance | $ / shares	6.64
Exercisable at March 31, 2016 | $ / shares	$ 6.64