Short-term and Long-term Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
SHORT-TERM DEBT
Total short-term debt	$ 500	$ 500
LONG-TERM DEBT
Senior Secured Notes due December 15, 2016	225,000	225,000
Convertible Notes Principal Amount	57,500	57,500
New Revolving Credit Facility due December 15, 2015	39,500	35,500
Other, primarily capital leases	1,400	244
Total long-term debt	323,400	318,244
Plus: derivative liability for conversion feature associated with convertible debt		26,440
Less: unamortized discount	(26,831)	(30,252)
Current portion of long-term debt	(415)	(192)
Total long-term portion	296,154	314,240
TOTAL SHORT-TERM AND LONG-TERM DEBT	297,069	314,932
Foreign
SHORT-TERM DEBT
Total short-term debt	$ 500	$ 500