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LONG-TERM DEBT AND OTHER FINANCING ARRANGEMENTS Convertible Notes (Details) (USD $)
3 Months Ended
Mar. 31, 2014
Mar. 31, 2014
2015 Convertible Notes [Member]
Dec. 31, 2013
2015 Convertible Notes [Member]
Feb. 18, 2011
2015 Convertible Notes [Member]
Mar. 31, 2014
2015 Convertible Notes [Member]
Class A Common Stock [Member]
Debt Instrument [Line Items]          
Debt Instrument, Interest Rate, Stated Percentage       5.00%  
Debt Instrument, Face Amount   $ 261,034,000 $ 261,034,000    
Debt Instrument, Convertible, Number of Equity Instruments         20
Debt Instrument Convertible Principle Amount         $ 1,000
Debt Instrument, Convertible, Conversion Price         $ 50.00
Beneficial Ownership Interest Total Voting Power Percentage 35.00% 50.00%      
Debt Instrument, Convertible, Effective Interest Rate   10.00%