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Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statements of Comprehensive Income [Abstract]
Mark-to-Market on Interest Rate Protection Agreements, Income Tax Provision	$ 0	$ 0	$ 0	$ 414
Foreign Currency Translation Adjustment, Income Tax Benefit	$ (341)	$ 166	$ (172)	$ 634

Tax effect of the adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity. While for technical reasons this element has no balance attribute, the default assumption is a credit balance consistent with its label.

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- Definition

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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