Investments in Available-for-Sale Securities (Details 1) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Due within one year, Cost	$ 1,004,435
Due after one year through three years, Cost	565,646
Due after three years, Cost	200,808
Available-for-sale Securities, Amortized Cost, Total	1,770,889
Due within one year, Fair Value	1,018,896
Due after one year through three years, Fair Value	556,763
Due after three years, Fair Value	200,526
Available-for-sale Securities, Fair Value, Total	$ 1,776,185	$ 1,932,801