Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION, Share-based Arrangements with Employees and Nonemployees (Details)

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STOCK-BASED COMPENSATION, Share-based Arrangements with Employees and Nonemployees (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Azoff Trust Note [Member]
   
Share-based arrangements with employees and nonemployees [Abstract]    
Interest rate on note issued (in hundredths) 3.00%  
Payable in monthly installments $ 0.8  
Corporate expenses related to Azoff Trust note 1.6 1.6
Market-based or performance-based awards [Member]
   
Share-based arrangements with employees and nonemployees [Abstract]    
Total unrecognized compensation cost $ 64.1  
Cost is expected to be recognized over a weighted average period (in years) 2.9