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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
Accumulated Other Comprehensive Loss      
Balance at the beginning of the period $ (10,069) $ (7,648) $ (19,599)
Activity, net of tax (497) (2,421) 11,951
Balance at the end of the period (10,566) (10,069) (7,648)
Foreign Currency Translation Adjustments
      
Accumulated Other Comprehensive Loss      
Balance at the beginning of the period (10,191) (7,794) (19,749)
Activity, net of tax (522) (2,397) 11,955
Balance at the end of the period (10,713) (10,191) (7,794)
Net Unrealized Gains (Losses) On Available-For-Sale Securities
      
Accumulated Other Comprehensive Loss      
Balance at the beginning of the period 122 146 150
Activity, net of tax 25 (24) (4)
Balance at the end of the period $ 147 $ 122 $ 146