Short-term and Long-term Debt (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
SHORT-TERM DEBT
Total short-term debt	$ 0	$ 500
LONG-TERM DEBT
Senior Secured Notes due December 15, 2016	210,000	225,000
Convertible Notes Principal Amount	57,500	57,500	57,500
New Revolving Credit Facility due December 15, 2015	0	39,500
Other, primarily capital leases	998	1,400
Total long-term debt	268,498	323,400
Less: unamortized discount	(22,502)	(26,831)
Current portion of long-term debt	(397)	(415)
Total long-term portion	245,599	296,154
TOTAL SHORT-TERM AND LONG-TERM DEBT	245,996	297,069
Foreign
SHORT-TERM DEBT
Total short-term debt	$ 0	$ 500