Derivative Instruments and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2011

Derivative Instruments and Hedging Activities [Abstract]

Fair value of derivative instruments in the Balance Sheet

The following table sets forth the fair values of our derivative instruments and where they are recorded within our Consolidated Balance Sheet:

		Fair Value as of December 31,
Liability Derivatives	Balance Sheet Location	2011			2010
Derivatives designated as hedging instruments:
Interest rate swaps	Other long-term liabilities	$	(9,039	)	$	(6,666	)

Summary of cash flow hedges

Cash Flow Hedges

Derivatives in Cash Flow Hedging Relationships	Amount of Gain or (Loss) Recognized in OCI on Derivatives, net of tax (Effective Portion)
	Year Ended December 31,
	2011			2010
Interest rate swaps	$	(1,484	)	$	(2,264	)

Changes in fair value of foreign exchange contracts

We did not have any significant foreign exchange derivative instruments outstanding as of December 31, 2011 or 2010.

Derivatives Not Designated as Hedging Instruments	Location of Gain or (Loss) Recognized in	Amount of Gain or (Loss) Recognized in Income on Derivatives
	Income on	Year Ended December 31,
	Derivatives	2011			2010			2009
Foreign exchange derivative instruments	Other, net	$	(484	)	$	(772	)	$	(4,932	)