Annual report pursuant to Section 13 and 15(d)

CUSTOMER CONTRACTS AND OTHER INTANGIBLE ASSETS (Details)

v2.4.0.6
CUSTOMER CONTRACTS AND OTHER INTANGIBLE ASSETS (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Other intangible assets      
Finite and infinite lived intangible assets, gross $ 29,178,000 $ 30,265,000  
Total amortization expense 22,400,000 20,400,000 21,300,000
Non-amortizable, indefinite lived intangible assets 14,400,000 14,400,000  
Customer contracts
      
CUSTOMER CONTRACTS AND OTHER INTANGIBLE ASSETS      
Useful life of intangible assets, minimum (in years) 8    
Useful life of intangible assets, maximum (in years) 20    
Finite-lived intangible assets      
Finite-lived intangible assets, gross 227,281,000 219,787,000  
Less: Accumulated amortization (118,933,000) (102,496,000)  
Finite-lived intangible assets, net 108,348,000 117,291,000  
Other intangible assets      
Less: Accumulated amortization (118,933,000) (102,496,000)  
Customer contracts | Foreign countries
      
Finite-lived intangible assets      
Finite-lived intangible assets, net 6,300,000 4,000,000  
Other intangible assets
      
Finite-lived intangible assets      
Less: Accumulated amortization (12,524,000) (11,494,000)  
Other intangible assets      
Finite and infinite lived intangible assets, gross 41,702,000 41,759,000  
Less: Accumulated amortization (12,524,000) (11,494,000)  
Finite and infinite lived intangible assets, net $ 29,178,000 $ 30,265,000  
Non-compete agreements
      
CUSTOMER CONTRACTS AND OTHER INTANGIBLE ASSETS      
Useful life of intangible assets, minimum (in years) 3    
Useful life of intangible assets, maximum (in years) 20    
Patents
      
CUSTOMER CONTRACTS AND OTHER INTANGIBLE ASSETS      
Average useful life of intangible assets (in years) 15