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Consolidated Statements Of Shareholders' Equity And Comprehensive Income (Parenthetical) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statements Of Shareholders' Equity And Comprehensive Income
Unrealized (loss) gain from derivative instruments, tax	$ 371	$ (2,549)

Tax effect on the change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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