Pension Plan - Summary of Components of Net Periodic Pension Cost (Benefit) (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]
Service Cost	$ 87,219	$ 87,496
Interest Cost	425,735	385,884
Actual Return on Plan Assets	342,637	(1,310,053)
Amortization of Unrecognized Transition Loss (Gain) from Earlier Periods		91,111
Amortization of Unrecognized Prior Service Cost	0	0
Amortization of Net Gain (Loss) from Earlier Periods		736,025
Net Periodic Pension Cost (Benefit)	$ 855,591	$ (9,537)