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Accumulated Other Comprehensive Income (Loss) (Tables)
 12 Months Ended
Dec. 31, 2012
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss)
The components of accumulated other comprehensive loss as of December 31 are as follows:
 
 
2012

2011

Currency translation
$
12,040

$
10,057

Pension liability
(166,479
)
(151,376
)
Postretirement benefits liability
(12,375
)
(9,045
)
Accumulated other comprehensive loss
$
(166,814
)
$
(150,364
)