Fair Value Of Financial Instruments (Valuation of Securities Using Fair Value Hierarchy) (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
United States [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	$ 1,090,050	$ (906,580)
Short-Term Investments [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	22,522,078	23,922,430
Fair Value, Inputs, Level 1 [Member] | United States [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	1,090,050	(906,580)
Fair Value, Inputs, Level 1 [Member] | Short-Term Investments [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	22,522,078	23,922,430
Fair Value, Inputs, Level 2 [Member] | United States [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 2 [Member] | Short-Term Investments [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 3 [Member] | United States [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	0	0
Fair Value, Inputs, Level 3 [Member] | Short-Term Investments [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Securities, fair value	$ 0	$ 0