Fair Values of Financial Instruments Schedule of Fair Values Of Financial Instruments by Balance Sheet Grouping (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Values Of Financial Instruments by Balance Sheet Grouping [Table Text Block]

	June 30, 2013				December 31, 2012
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
			(in thousands)
Assets
Cash and cash equivalents	$	103,662	$	103,662	$	136,411	$	136,411
Foreign exchange forwards	122		122		146		146
Liabilities
Credit facility
USD denominated term loan	$	270,000	$	268,219	$	277,500	$	275,365
Multicurrency revolving line of credit	140,000		138,930		140,000		138,751
Interest rate swaps	1,482		1,482		2,725		2,725
Foreign exchange forwards	108		108		114		114