Available for Sale Securities - Summary of Contractual Maturities of Debt Investment Securities (Details) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	$ 25,231,370
1 to 2 Years	2,620,676
Fair Value (Net Carrying Amount)	27,852,046	$ 30,805,408
US Treasury Securities and Obligations of US Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	16,604,507
1 to 2 Years	1,301,925
Fair Value (Net Carrying Amount)	17,906,432	17,887,392
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	8,626,863
1 to 2 Years	1,318,751
Fair Value (Net Carrying Amount)	$ 9,945,614	$ 12,918,016