Fair Value Of Financial Instruments And Equity-Accounted Investments (Outstanding Foreign Exchange Contracts) (Details) (USD $)	Dec. 31, 2011
First Maturity [Member]
Derivatives, Fair Value [Line Items]
Notional amount	$ 272,318
Strike price	8.3620
Fair market value price	8.1494
Maturity	January 31, 2012
Second Maturity [Member]
Derivatives, Fair Value [Line Items]
Notional amount	331,056
Strike price	8.3980
Fair market value price	8.1832
Maturity	February 29, 2012
Third Maturity [Member]
Derivatives, Fair Value [Line Items]
Notional amount	$ 821,620
Strike price	8.4450
Fair market value price	8.2339
Maturity	April 13, 2012