Fair Value of Financial Instruments (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment Of Long-Lived Assets Held For Use, Net Of Amounts Recognized In Other Comprehensive Income	$ 3,700,700
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment Of Long-Lived Assets Held For Use, Net Of Amounts Recognized In Other Comprehensive Income	$ 3,700,700