| 
           LONG-LIVED ASSETS (Narrative) (Details) (USD $) 
        In Thousands, unless otherwise specified  | 
        3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
| 
           Jun. 30, 2013 
         | 
        
           Jun. 30, 2012 
         | 
        
           Jun. 30, 2013 
         | 
        
           Jun. 30, 2012 
         | 
      |
| Segment Reporting Information [Line Items] | ||||
| Gain (loss) on disposal of operating assets | $ 30,199 | $ (93) | $ 33,796 | $ 195 | 
| 
           Concerts [Member] 
         | 
        ||||
| Segment Reporting Information [Line Items] | ||||
| Gain (loss) on disposal of operating assets | 31,332 | (1) | 34,462 | 469 | 
| 
           New York Amphitheater [Member] | Concerts [Member] 
         | 
        ||||
| Segment Reporting Information [Line Items] | ||||
| Gain (loss) on disposal of operating assets | $ 9,400 | $ 12,600 | ||