Debt Short-term and Long-term Debt (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Short-term Debt [Abstract]
Short-term debt	$ 500	$ 500
Long-term Debt, Unclassified [Abstract]
Senior Secured Notes Principal Amount	225,000	225,000
Convertible Notes Principal Amount	57,500	57,500
Revolving Credit Facility Principal Amount	8,250	39,500
Other, primarily capital leases	1,299	1,400
Total long-term debt	292,049	323,400
Less: unamortized discount	(25,889)	(26,831)
Less: current portion	(399)	(415)
Total long-term portion	265,761	296,154
TOTAL SHORT-TERM AND LONG-TERM DEBT	266,660	297,069
Foreign [Member]
Short-term Debt [Abstract]
Short-term debt	$ 500	$ 500