Available for Sale Securities - Summary of Contractual Maturities of Debt Investment Securities (Details)	Sep. 30, 2015 USD ($)
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	$ 28,711,759
1 to 2 Years	7,766,952
Fair Value (Net Carrying Amount)	36,478,711
US Treasury Securities and Obligations of US Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	13,085,633
1 to 2 Years	4,938,556
Fair Value (Net Carrying Amount)	18,024,189
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Under 1 Year	15,626,126
1 to 2 Years	2,828,396
Fair Value (Net Carrying Amount)	$ 18,454,522