Annual report pursuant to Section 13 and 15(d)

ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Details)

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ACCUMULATED OTHER COMPREHENSIVE INCOME/(LOSS) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Components of accumulated other comprehensive income (loss)      
Balance at the beginning of the period $ (48,090) $ (32,490)  
Change during the period      
Before-tax amount (14,323) (25,622)  
Tax benefit/(expense) 5,446 10,022  
Other comprehensive loss (8,877) (15,600) (363)
Balance at the end of the period (56,967) (48,090) (32,490)
Pension Liability Adjustment
      
Components of accumulated other comprehensive income (loss)      
Balance at the beginning of the period (52,969) (38,077)  
Change during the period      
Before-tax amount (15,385) (24,497)  
Tax benefit/(expense) 5,852 9,605  
Other comprehensive loss (9,533) (14,892)  
Balance at the end of the period (62,502) (52,969)  
Foreign Currency Translation
      
Components of accumulated other comprehensive income (loss)      
Balance at the beginning of the period 4,879 5,587  
Change during the period      
Before-tax amount 1,062 (1,125)  
Tax benefit/(expense) (406) 417  
Other comprehensive loss 656 (708)  
Balance at the end of the period $ 5,535 $ 4,879