Marketable Securities (Details 1) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 3,090,791	$ 7,420,042
Cost	3,090,158	$ 7,423,448
Due within one year
Schedule of Available-for-sale Securities [Line Items]
Fair Value	3,090,791
Cost	3,090,158
Due after one year
Schedule of Available-for-sale Securities [Line Items]
Fair Value	0
Cost	$ 0