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Debt And Financing (Details) (USD $)
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 12 Months Ended 0 Months Ended 0 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Carrying Amount [Member]
Dec. 31, 2012
Carrying Amount [Member]
Dec. 31, 2013
Fair Value [Member]
Dec. 31, 2012
Fair Value [Member]
Dec. 31, 2013
Amended And Restated Credit Agreement [Member]
Dec. 31, 2012
Amended And Restated Credit Agreement [Member]
Dec. 31, 2012
ABL facility - Term B [Member]
Dec. 31, 2013
ABL Facility [Member]
Dec. 31, 2013
A&R CDA [Member]
Dec. 31, 2012
A&R CDA [Member]
Dec. 31, 2013
Restructured Term Loan [Member]
Dec. 31, 2012
Restructured Term Loan [Member]
Jul. 22, 2011
Restructured Term Loan [Member]
Dec. 31, 2013
Restructured Term Loan [Member]
Carrying Amount [Member]
Dec. 31, 2012
Restructured Term Loan [Member]
Carrying Amount [Member]
Dec. 31, 2013
Restructured Term Loan [Member]
Fair Value [Member]
Dec. 31, 2012
Restructured Term Loan [Member]
Fair Value [Member]
Dec. 31, 2013
Restructured Term Loan [Member]
Amended And Restated Credit Agreement [Member]
Dec. 31, 2013
Line of Credit [Member]
Carrying Amount [Member]
Dec. 31, 2012
Line of Credit [Member]
Carrying Amount [Member]
Dec. 31, 2013
Line of Credit [Member]
Fair Value [Member]
Dec. 31, 2012
Line of Credit [Member]
Fair Value [Member]
Dec. 31, 2013
Line of Credit [Member]
ABL facility - Term A [Member]
Dec. 31, 2012
Line of Credit [Member]
ABL facility - Term A [Member]
Dec. 31, 2013
Line of Credit [Member]
ABL facility - Term B [Member]
Dec. 31, 2012
Line of Credit [Member]
ABL facility - Term B [Member]
Dec. 31, 2013
Senior Notes [Member]
Carrying Amount [Member]
Dec. 31, 2012
Senior Notes [Member]
Carrying Amount [Member]
Dec. 31, 2013
Senior Notes [Member]
Fair Value [Member]
Dec. 31, 2012
Senior Notes [Member]
Fair Value [Member]
Dec. 31, 2013
Senior Notes [Member]
Senior A Notes [Member]
Dec. 31, 2013
Senior Notes [Member]
Senior A Notes [Member]
Dec. 31, 2012
Senior Notes [Member]
Senior A Notes [Member]
Jul. 22, 2011
Senior Notes [Member]
Senior A Notes [Member]
Dec. 31, 2013
Senior Notes [Member]
Senior B Notes
Dec. 31, 2013
Senior Notes [Member]
Senior B Notes
Dec. 31, 2012
Senior Notes [Member]
Senior B Notes
Jul. 22, 2011
Senior Notes [Member]
Senior B Notes
Dec. 31, 2013
Senior Notes [Member]
Senior B Notes [Domain]
Dec. 31, 2012
Senior Notes [Member]
Senior B Notes [Domain]
Feb. 11, 2010
Senior Notes [Member]
Senior B Notes [Domain]
Dec. 31, 2013
Senior Notes [Member]
5.0% Contingent Convertible Senior Notes [Member]
Dec. 31, 2013
Senior Notes [Member]
5.0% and 3.375% Contingent Convertible Senior Notes [Member]
Dec. 31, 2012
Senior Notes [Member]
5.0% and 3.375% Contingent Convertible Senior Notes [Member]
Jul. 22, 2011
Letter of Credit [Member]
Dec. 31, 2013
Letter of Credit [Member]
Amended And Restated Credit Agreement [Member]
Dec. 31, 2013
Pension Contribution Deferral Obligation [Member]
Dec. 31, 2012
Pension Contribution Deferral Obligation [Member]
Dec. 31, 2013
Lease Financing Obligations [Member]
Dec. 31, 2012
Lease Financing Obligations [Member]
Dec. 31, 2013
Lease Financing Obligations [Member]
Carrying Amount [Member]
Dec. 31, 2012
Lease Financing Obligations [Member]
Carrying Amount [Member]
Dec. 31, 2013
Lease Financing Obligations [Member]
Fair Value [Member]
Dec. 31, 2012
Lease Financing Obligations [Member]
Fair Value [Member]
Dec. 31, 2013
Other Debt Obligations [Member]
Dec. 31, 2012
Other Debt Obligations [Member]
Dec. 31, 2013
Other Debt Obligations [Member]
Carrying Amount [Member]
Dec. 31, 2012
Other Debt Obligations [Member]
Carrying Amount [Member]
Dec. 31, 2013
Other Debt Obligations [Member]
Fair Value [Member]
Dec. 31, 2012
Other Debt Obligations [Member]
Fair Value [Member]
Dec. 31, 2013
Alternate Base Rate [Member]
Amended And Restated Credit Agreement [Member]
Dec. 31, 2013
Alternate Base Rate [Member]
Restructured Term Loan [Member]
Dec. 31, 2013
Alternate Base Rate [Member]
Restructured Term Loan [Member]
Amended And Restated Credit Agreement [Member]
Dec. 31, 2013
Higher of London Interbank Offer Rate or 3.50% [Member]
Restructured Term Loan [Member]
Amended And Restated Credit Agreement [Member]
Dec. 31, 2013
LIBOR Rate [Member]
Restructured Term Loan [Member]
Amended And Restated Credit Agreement [Member]
Dec. 31, 2013
LIBOR Rate [Member]
Line of Credit [Member]
Dec. 31, 2013
ABR Rate [Member]
Line of Credit [Member]
Dec. 31, 2013
Prime Rate [Member]
Line of Credit [Member]
Dec. 31, 2013
Federal Funds Rate [Member]
Line of Credit [Member]
Dec. 31, 2013
Reserve Adjusted LIBOR [Member]
LIBOR Rate [Member]
Line of Credit [Member]
Dec. 31, 2013
LIBOR Rate Advances [Member]
LIBOR Rate [Member]
Line of Credit [Member]
ABL facility - Term A [Member]
Dec. 31, 2013
LIBOR Rate Advances [Member]
LIBOR Rate [Member]
Line of Credit [Member]
ABL facility - Term B [Member]
Dec. 31, 2013
ABR Rate Advances [Member]
ABR Rate [Member]
Line of Credit [Member]
ABL facility - Term A [Member]
Dec. 31, 2013
ABR Rate Advances [Member]
ABR Rate [Member]
Line of Credit [Member]
ABL facility - Term B [Member]
Aug. 05, 2014
2014 Financing [Member]
Series A Note [Member]
Nov. 12, 2013
Credit Agreement Amendment [Member]
Dec. 31, 2013
Credit Agreement Amendment [Member]
Nov. 12, 2013
ABL Facility Credit Agreement [Member]
Dec. 31, 2013
ABL Facility Credit Agreement [Member]
Dec. 31, 2013
Subsequent Event [Member]
A&R CDA [Member]
Feb. 13, 2014
Subsequent Event [Member]
Senior Notes [Member]
Senior B Notes
Jan. 31, 2014
Subsequent Event [Member]
Senior Notes [Member]
Senior B Notes
Feb. 13, 2014
Subsequent Event [Member]
2014 Financing [Member]
ABL Facility [Member]
Jan. 31, 2014
Subsequent Event [Member]
2014 Financing [Member]
Series A Note [Member]
Debt Instrument [Line Items]                                                                                                                                                                              
Principal amount issued                               $ 307,400,000         $ 307,400,000         $ 175,000,000   $ 225,000,000                 $ 140,000,000.0       $ 100,000,000.0     $ 70,000,000                                                                                      
Capacity                                                   175,000,000 175,000,000 219,900,000.0 222,200,000.0                                     437,000,000 437,000,000                                                                 400,000,000          
Basis spread on variable rate                                                                                                                                   6.00% 7.00%             7.50% 10.25% 6.50% 9.25%                    
Description of variable rate basis                                                                                                                               alternate base rate           ABR Rate prime rate federal funds rate LIBOR                            
Variable rate basis, option two, minimum variable rate basis                                                                                                                                       3.50%         1.50%                            
Variable rate basis, option one, minimum variable rate basis, spread over LIBOR                                                                                                                                   1.00%     1.00%                                    
Stated interest rate, minimum                                                                                           5.00% 5.00%     3.25% 3.00% 10.00% 10.00%                                                                    
Stated interest rate, floor                                                                                           3.375% 3.375%     18.25% 18.00% 18.20% 18.20%                                                                    
Stated interest rate                           10.00% 10.00%           10.00%         8.50% [1] 8.50% [1] 11.25% 11.25%         10.00% 10.00% 10.00%   10.00% 10.00% 10.00%   6.00% 6.00%                                                                                        
Commitment fee percentage                                                   7.50%                                             8.00%                                                                            
Commitment fee percentage of average daily unused capacity                                                                                                 8.00%                                                                            
Fronting fee percentage                                                                                                 1.00%                                                                            
Restricted amounts held in escrow-long term               600,000 12,400,000                                                                                                                                                            
Credit Facility, Number of Days Restructuring Transactions to be Realizable                                                                                                                                                             90 days                
Net Cash Proceeds Received from Asset Sales Threshold                                                                                                                                                             12,500,000.0                
Borrowing Base                                                   156,500,000.0 147,600,000.0 219,900,000.0 222,200,000.0                                                                                                         376,400,000          
Availability                                                   51,500,000.0 42,600,000.0 0 0                                                                                                                    
Borrowing base percent of net eligible receivables                                                   85.00%                                                                                                                          
Borrowing base percent of credit facility cash collaterized                                                   100.00%                                                                                                                          
Escrow deposit                     90,000,000                                                                                                                                                        
Credit Facility, Interest Rate Payable, Basis Points Increase                                                                                                                                                             5000.00%     5000.00%          
Amendment Fee Payment to Each Consenting Lender as Percent of Outstanding Exposure                                                                                                                                                               1.00% 1.00%            
Repayments of debt                                         9,300,000                                                                                                                                    
Aggregate principal amount 1,361,300,000 1,381,000,000                   124,200,000 125,800,000 298,100,000 298,700,000                     105,000,000 [1] 105,000,000 [1] 219,900,000 222,200,000         177,800,000 177,800,000 161,200,000   69,200,000 69,200,000 91,500,000   69,400,000 69,400,000   200,000             297,500,000 306,900,000         200,000 300,000                                                        
Debt Instrument, Convertible, Number of Equity Instruments                                                                   5,600,000 5,600,000     4,200,000 4,200,000                                                                                                
Aggregate principal amount of Series B Notes surrendered for conversion                                                                             50,900,000                                                                                                
Aggregate principal amount, subsequent month                                                                           1,200,000 1,200,000                                                                                                
Number of shares notes are convertible into, subsequent month                                                                           75,900 75,900                                                                                                
Aggregate principal converted                                                                             29,100,000                                                                                         50,600,000      
Conversion price, future period                                                                   $ 34.0059 $ 34.0059     $ 18.5334 $ 18.5334                                                                                           $ 15.00    
Conversion rate                                                                   0.0294067 29.4067     0.0539567 53.9567     0.0003101                                                                                          
Number of votes                                                                   0.1089 0.1089     0.0594 0.0594                                                                                                
Debt redemption percentage                                                                   100.00% 100.00%                                                                                                        
Repayment of long-term debt 9,200,000 25,600,000 46,700,000                                                                                                                                                     89,600,000               326,000,000 90,900,000
Conversion price                                                                           $ 16.0056 $ 16.0056                                                                                                
Conversion ratio                                                                           0.0624781 0.0624781                                                                                                
Number of shares converted per thousand                                                                           62.4781 62.4781                                                                                                
Issuance of equity upon conversion of 6% convertible senior notes                                                                           1,929,000 1,929,000                                                                                                
Common stock available for future issuances                                                                                   17,600                                                                                          
Common shares available for future issuance, as of February 15, 2013                                                                                   17,616                                                                                          
Alternative base rate spread over federal funds effective rate                                                                                                                                 0.50%             0.50%                              
Contribution rate of subsidiaries to funds 25.00%                                                                                                                                                                            
Proceeds from lease financing activities 0                                                                                                                                                                            
Premium/(Discount), Debt 2,100,000 (5,600,000)                   (200,000) (400,000) 37,700,000 67,600,000                     (2,100,000) [1] (4,800,000) [1] (3,900,000) (8,500,000)         (17,800,000) (17,800,000) (27,800,000)   (10,500,000) (10,500,000) (25,400,000)   (1,100,000) (6,300,000)   0             0 0           0                                                        
Long-term debt 1,363,400,000 1,375,400,000                   124,000,000 125,400,000 335,800,000 366,300,000                     102,900,000 [1] 100,200,000 [1] 216,000,000 213,700,000         160,000,000 160,000,000 133,400,000   58,700,000 58,700,000 66,100,000   68,300,000 63,100,000   200,000             297,500,000 306,900,000           300,000                                               124,000,000        
Current maturities (8,600,000) (9,100,000)               (2,300,000)                                                                     (200,000)   (300,000)         (8,400,000) (6,500,000)                                                                    
Debt Instrument, Unamortized Discount (Premium), Net, Current Maturities                                                                                                       0           0                                                          
Par value, excluding current maturities 1,352,700,000 1,371,900,000                                                                                                                                                                          
Debt Instrument, Unamortized Discount (Premium), Net, Noncurrent Maturities (2,100,000)                                                                                                                                                                            
Effective Interest Rate                       7.30% 7.10% 0.00% 0.00%                     15.80% [1] 15.80% [1] 15.00% 15.00%         18.30% 18.30% 18.30%   25.60% 25.60% 25.60%   15.50% 15.50%                 11.90% 11.90%                                                                    
Debt interest expense                                                                             15,200,000                                                                                                
Make whole premium                                                                           6,600,000 6,600,000                                                                                                
Accelerated amortization of the discount                                                                             8,600,000                                                                                                
Fair value of long term debt       1,363,400,000 1,375,400,000 1,318,400,000 1,011,200,000                   335,800,000 366,300,000 289,200,000 197,500,000   318,900,000 313,900,000 326,100,000 325,800,000         218,700,000 199,500,000 225,800,000 81,500,000                                         297,500,000 306,900,000 297,500,000 306,900,000     192,500,000 188,800,000 179,800,000 99,500,000                                                
Long-term Debt, Excluding Current Maturities $ 1,354,800,000 $ 1,366,300,000                                                                                                                                                                          
[1] The effective interest rate on the Term A Facility is calculated based upon the capacity of the facility and not the par value.