Fair Value Measurement (Schedule Of Estimated Fair Value Hierarchy Of Investments And Related Impairments Recognized) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value	$ 75,281
Total cost method investments and other assets, Impairment Losses	(44,404)
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value	75,281
Cost Method Investment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation Method	Fair Value
Impaired	Yes
Total cost method investments and other assets, Total at Estimated Fair Value	58,281
Total cost method investments and other assets, Impairment Losses	(28,904)
Cost Method Investment [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value
Cost Method Investment [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value
Cost Method Investment [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value	58,281
Other Assets [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Valuation Method	Fair Value
Impaired	Yes
Total cost method investments and other assets, Total at Estimated Fair Value	17,000
Total cost method investments and other assets, Impairment Losses	(15,500)
Other Assets [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value
Other Assets [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value
Other Assets [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total cost method investments and other assets, Total at Estimated Fair Value	$ 17,000