Available for Sale Securities - Summary of Contractual Maturities of Debt Investment Securities (Details) - USD ($)	Jun. 30, 2016	Dec. 31, 2015
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	$ 15,405,414
Fair Value (Net Carrying Amount)	15,405,414	$ 30,805,408
U.S. Treasury Securities and Obligations of U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	9,205,896
Fair Value (Net Carrying Amount)	9,205,896	17,887,392
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	6,199,518
Fair Value (Net Carrying Amount)	$ 6,199,518	$ 12,918,016