Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2012

Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]

Fair Value, by Balance Sheet Grouping [Table Text Block]

The following table provides the estimated fair values of the Company’s other financial instruments, based on quoted market prices or significant other observable inputs.

	As of
	December 31, 2012						December 31, 2011
(in thousands)	Carrying Value			Fair Value			Carrying Value			Fair Value
3.50% convertible debentures, unsecured, due 2025	$	(3,586	)	$	(3,579	)	$	(165,173	)	$	(170,581	)
Foreign currency derivative contracts	35			35			(78		)	(78		)
Embedded derivative in foreign lease	—			—			(141		)	(141		)