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Level 4 Asset-Based Revolving Credit Facilities (Details) (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Aug. 14, 2013
Dec. 31, 2012
Line of Credit Facility [Line Items]        
Senior secured asset-based revolving credit facility, maximum borrowing capacity $ 350,000,000 $ 350,000,000 $ 300,000,000  
Treasury Stock, Value, Acquired, Cost Method   100,000,000    
Senior secured asset-based revolving credit facility, current availability 274,700,000 274,700,000    
Aggregate liquidity 431,700,000 431,700,000    
Line of Credit Facility, Dividend Restrictions The Revolving Credit Facility generally permits dividends only if certain conditions are met, including complying with either (i) pro forma Excess Availability (as defined in the Revolving Credit Facility) equal to or exceeding 25% of the aggregate Revolver Commitments (as defined in the Revolving Credit Facility) or (ii) (x) pro forma Excess Availability equal to or exceeding 15% of the aggregate Revolver Commitment and (y) a fixed-charge coverage ratio of 1:1 on a pro forma basis.      
Letters of credit outstanding 10,200,000 10,200,000   10,000,000
Maximum borrowings under Revolving Credit Facility 75,000,000      
Minimum [Member]
        
Line of Credit Facility [Line Items]        
Senior secured asset-based revolving credit facility, commitment fee rate   0.25%    
Maximum [Member]
        
Line of Credit Facility [Line Items]        
Senior secured asset-based revolving credit facility, commitment fee rate   0.375%    
Asset-based revolving credit facility [Member]
        
Line of Credit Facility [Line Items]        
Revolving Credit Facility, Covenant Description The Revolving Credit Facility also contains a requirement that we meet a 1:1 fixed-charge coverage ratio (FCCR) if Availability falls below 10% of the aggregate lending commitments (or $35 million).      
Line of Credit Facility, Amount Outstanding $ 25,000,000 $ 25,000,000   $ 25,000,000
Asset-based revolving credit facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
        
Line of Credit Facility [Line Items]        
Senior secured asset-based revolving credit facility, variable interest rate 1.50% 1.50%    
Asset-based revolving credit facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
        
Line of Credit Facility [Line Items]        
Senior secured asset-based revolving credit facility, variable interest rate 2.00% 2.00%    
Asset-based revolving credit facility [Member] | Base Rate [Member] | Minimum [Member]
        
Line of Credit Facility [Line Items]        
Senior secured asset-based revolving credit facility, variable interest rate 0.50% 0.50%    
Asset-based revolving credit facility [Member] | Base Rate [Member] | Maximum [Member]
        
Line of Credit Facility [Line Items]        
Senior secured asset-based revolving credit facility, variable interest rate 1.00% 1.00%