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CREDIT ARRANGEMENT (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Credit Agreement [Member]
      
Line of Credit Facility [Line Items]      
Current borrowing capacity   $ 50.0  
Original borrowing capacity     60.0
Maturity date   Sep. 01, 2016 Dec. 22, 2011
Sale leaseback transactions or real estate sales as covenant 100.0    
Current borrowing base 54.8    
Reduction in borrowing base due to deficit in fixed charges coverage ratio test 6.2    
Number of trailing months to compute fixed charges coverage ratio 12 months    
Net availability 43.8    
Letter of Credit [Member]
      
Line of Credit Facility [Line Items]      
Current borrowing capacity   20.0  
Outstanding letters of credit $ 0