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ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]    
Foreign currency translation $ 11,627 $ 7,725
Actuarial gains related to defined benefit pension plans (5,066) 1,712
Net unrealized (losses) gains on investments (149) 11
Total accumulated other comprehensive income $ 6,412 $ 9,448