Income Taxes - Summary of Income Tax Provision (Benefit) from Income Taxes (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Federal
Current	$ 0	$ 0
Deferred	(1,246,071)	(6,333,053)
State
Current	0	0
Deferred	(213,826)	(2,739,746)
Total	(1,459,897)	(9,072,799)
Change in valuation allowance	1,459,897	9,072,799
Income tax provision (benefit)	$ 0	$ 0