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SHAREHOLDERS' EQUITY (Details) (USD $)
0 Months Ended 12 Months Ended 12 Months Ended
Jul. 25, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2013
Accumulated Defined Benefit Plans Adjustment [Member]
Dec. 31, 2012
Accumulated Defined Benefit Plans Adjustment [Member]
Dec. 31, 2011
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Accumulated other comprehensive losses (AOCL)   $ 142,445,000 $ 221,082,000 $ 142,500,000 $ 221,100,000 $ 225,700,000
Amounts reclassified from AOCL       15,300,000 19,500,000 (300,000)
Disclosure of Repurchase of Equity [Abstract]            
Stock repurchase program, authorized amount 150,000,000          
Remaining authorized repurchase amount   $ 25,000,000