Fair Value Measurement Schedule Of Estimated Fair Value Hierarchy Of Investments And Related Impairments Recognized (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments, Total at Estimated Fair Value	$ 0	$ 22,682
Total cost method investments, Impairment Losses	0	(10,062)
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments, Total at Estimated Fair Value	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments, Total at Estimated Fair Value	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments, Total at Estimated Fair Value	$ 0	$ 22,682
Cost Method Investments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation Method	Fair Value	Fair Value
Impaired	Yes	Yes
Total cost method investments, Total at Estimated Fair Value	$ 0	$ 22,682
Total cost method investments, Impairment Losses	0	(10,062)
Cost Method Investments | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments, Total at Estimated Fair Value	0	0
Cost Method Investments | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments, Total at Estimated Fair Value	0	0
Cost Method Investments | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments, Total at Estimated Fair Value	$ 0	$ 22,682