XML 30 R9.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Goodwill and Other Intangible Assets
6 Months Ended
Jun. 30, 2011
Goodwill and Other Intangible Assets [Abstract]  
Goodwill and Other Intangible Assets
4. Goodwill and Other Intangible Assets
The following is a summary of intangible assets at June 30, 2011 and December 31, 2010.
                                         
    Estimated     June 30, 2011     December 31, 2010  
    Life     Gross Carrying     Accumulated     Gross Carrying     Accumulated  
    (Years)     Amount     Amortization     Amount     Amortization  
Customer lists and contracts
    7—10     $ 467,151     $ 447,107     $ 466,412     $ 441,641  
Non-competition agreements
    3—15       63,496       61,414       63,493       60,955  
Site locations
    15       1,378,544       879,652       1,375,298       833,418  
Other
    5—15       13,608       13,089       13,608       13,074  
 
                               
 
            1,922,799       1,401,262     $ 1,918,811     $ 1,349,088  
Unamortizable intangible assets:
                                       
Goodwill
          $ 1,680,461     $ 253,635     $ 1,679,770     $ 253,635