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ACCOUNTING POLICIES (Details) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Senior Secured Notes 6.875 Percent [Member]
Dec. 31, 2013
Senior Secured Notes 6.875 Percent [Member]
Jun. 30, 2014
5.625% convertible senior subordinated notes [Member]
Dec. 31, 2013
5.625% convertible senior subordinated notes [Member]
Organization And Accounting Policies [Line Items]                
Debt Instrument, Interest Rate, Stated Percentage         6.875%   5.625%  
Senior Notes $ 400,000,000   $ 400,000,000   $ 400,000,000 $ 400,000,000    
Convertible Debt 60,200,000   60,200,000       60,161,000 60,161,000
Debt Instrument, Fair Value Disclosure $ 408,000,000   $ 408,000,000          
Common Stock, Dividends, Per Share, Declared $ 0.005 $ 0.005 $ 0.010 $ 0.010