Income Taxes - Summary of Provisions for Income Tax Benefit (Expense) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal - Current	$ 479,671	$ (2,233,512)	$ (1,817,112)
State - Current	185,584	(302,896)	(354,061)
Total - Current	665,255	(2,536,408)	(2,171,173)
Federal - Deferred	(5,607,970)	(1,223,260)	264,121
State - Deferred	(326,389)	(71,195)	15,372
Total - Deferred	$ (5,934,359)	$ (1,294,455)	$ 279,493