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STOCKHOLDERS' EQUITY (Details 3) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Unrecognized net periodic benefit costs:    
LOSS BEFORE INCOME TAXES $ (8,955) $ (23,303)
Tax benefit 3,762 9,908
NET LOSS (5,193) (13,395)
Unrecognized Net Periodic Benefit Costs | Amounts Reclassified from Accumulated Other Comprehensive Loss
    
Unrecognized net periodic benefit costs:    
Amortization of actuarial loss (577)  
Amortization of prior service credit 47  
Pension settlement expense (3,691)  
LOSS BEFORE INCOME TAXES (4,221)  
Tax benefit 1,642  
NET LOSS $ (2,579)