Financing Arrangements (Tables)

3 Months Ended

Mar. 31, 2013

Financing Arrangements

Schedule of Liability and Equity Components of Convertible Debt

	March 31,		December 31,
(in thousands)	2013		2012
Carrying value of the equity component	$	19,519	$	19,519
Principal amount and carrying value of the liability component	18,472		18,472