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LONG-TERM DEBT LIABILITIES - Senior Unsecured Debt (Details) - Dec. 31, 2011 - Senior Unsecured Debt - USD ($)
$ in Millions
Total
Debt Instrument [Line Items]  
Senior Notes $ 220.0
Net Proceeds 212.7
Debt Instrument Original Issue Discount 2.9
Deferred Finance Costs, Current, Net $ 6.1
Debt Instrument, Interest Rate, Stated Percentage 10.50%