Marketable Securities (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair Value	$ 9,645,934	$ 8,073,108
Cost or Amortized Cost	9,644,339	8,069,698
Net Unrealized Gains	1,595	3,410
Government securities
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair Value	7,474,401	6,252,339
Cost or Amortized Cost	7,473,328	6,249,483
Net Unrealized Gains	1,073	2,856
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Aggregate Fair Value	2,171,533	1,820,769
Cost or Amortized Cost	2,171,011	1,820,215
Net Unrealized Gains	$ 522	$ 554