Marketable Securities (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair Value	$ 10,582,030	$ 10,900,722
Cost or Amortized Cost	10,577,333	10,902,130
Net Unrealized Gains (losses)	4,697	(1,408)
Government securities
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair Value	8,100,285	6,740,825
Cost or Amortized Cost	8,095,408	6,741,466
Net Unrealized Gains (losses)	4,877	(641)
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair Value	2,481,745	4,159,897
Cost or Amortized Cost	2,481,925	4,160,664
Net Unrealized Gains (losses)	$ (180)	$ (767)