LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Tender Offers (Details)	3 Months Ended		9 Months Ended			1 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended			12 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Apr. 30, 2012 T W Loan 2013 Convert Note tranche [Member] USD ($)	Sep. 30, 2011 Repurchase of 2013 Convertible Notes [Member] [Member] USD ($)	Sep. 30, 2012 Repurchase of 2013 Convertible Notes [Member] [Member] USD ($)	Sep. 30, 2012 2014 Floating Rate Notes [Member] USD ($)	Sep. 30, 2011 2014 Floating Rate Notes [Member] USD ($)	Sep. 30, 2012 2014 Floating Rate Notes [Member] USD ($)	Sep. 30, 2012 2014 Floating Rate Notes [Member] EUR (€)	Sep. 30, 2011 2014 Floating Rate Notes [Member] USD ($)	Dec. 31, 2010 2014 Floating Rate Notes [Member] USD ($)	Dec. 31, 2010 2014 Floating Rate Notes [Member] EUR (€)	May 16, 2007 2014 Floating Rate Notes [Member] USD ($)	Apr. 30, 2012 T W Loan 2016 Fixed Rate Note tranche [Member] T W Loan 2014 Floating Rate Note tranche [Member] USD ($)
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 129,700,000										$ 150,000,000	$ 170,000,000
Extinguishment of Debt, Amount						49,500,000	109,000,000			75,800,000	60,500,000		2,800,000	2,000,000
Early Repayment of Senior Debt			180,087,000	73,560,000		47,400,000	109,000,000			71,100,000	56,700,000		2,300,000	1,600,000
(Loss) / gain on extinguishment	0	(924,000)	448,000	(25,904,000)			(3,763,000)	0	0	4,211,000		0
Unamortized debt costs included in (loss) / gain on extinguishment			897,000				370,000			527,000
Adjustment to additional paid-in capital			$ 868,000				$ 868,000			$ 0