U.S. Income Tax Provision (Benefit) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
State	$ (365,000)
Total current federal, state provision (benefit) for income tax	(365,000)
Deferred:
Total provision (benefit) for income taxes	$ (365,000)	$ 0	$ 0