Fair Values of Financial Instruments (Text Block)

12 Months Ended

Dec. 31, 2011

Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]

Fair Values of Financial Instruments [Text Block]

Fair Values of Financial Instruments

The fair values at December 31, 2011 and 2010 do not reflect subsequent changes in the economy, interest rates, tax rates, and other variables that may affect the determination of fair value.

	December 31, 2011				December 31, 2010
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Assets			(in thousands)
Cash and cash equivalents	$	133,086	$	133,086	$	169,477	$	169,477
Foreign exchange forwards	241		241		63		63
Liabilities
2011 credit facility
USD denominated term loan	$	292,502	$	296,856	$	—	$	—
Multicurrency revolving line of credit	160,000		163,269		—		—
2007 credit facility
USD denominated term loan	—		—		218,642		219,462
EUR denominated term loan	—		—		174,031		174,684
Convertible senior subordinated notes	—		—		218,268		236,461
Interest rate swaps	—		—		6,820		6,820
Foreign exchange forwards	222		222		457		457

The following methods and assumptions were used in estimating fair values:

Cash and cash equivalents: Due to the liquid nature of these instruments, the carrying value approximates fair value.

2011 Credit Facility - term loan and multicurrency revolving line of credit: The term loan and revolver, which we entered into on August 5, 2011, are not traded publicly. The fair value is calculated using a discounted cash flow model with significant inputs that are corroborated by observable market data, including estimates of incremental borrowing rates for debt with similar terms, maturities, and credit profiles. Refer to Note 6 for a further discussion of our debt.

2007 Credit Facility - term loans: On August 8, 2011, we repaid the remaining balance on our 2007 credit facility using proceeds from our 2011 credit facility. At December 31, 2010, the fair value was based on quoted prices from recent trades of the term loans. Refer to Note 6 for a further discussion of our debt.

Convertible senior subordinated notes: During 2011, the convertible notes were repurchased and redeemed using a combination of cash on hand and borrowings under our credit facilities. At December 31, 2010, the fair value was based on quoted prices from recent broker trades of the convertible notes. Refer to Note 6 for a further discussion of our debt.

Derivatives: Refer to Note 7 for a description of our methods and assumptions in determining the fair value of our derivatives, which were determined using fair value measurements of significant other observable inputs (Level 2).