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Long-Term Debt - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 26 Months Ended 6 Months Ended 26 Months Ended 6 Months Ended 1 Months Ended 1 Months Ended 26 Months Ended 6 Months Ended
Aug. 04, 2013
Person
Aug. 04, 2013
Minimum
Aug. 04, 2013
Minimum
Aug. 04, 2013
Maximum
Aug. 04, 2013
Maximum
Aug. 04, 2013
Senior Notes
May 14, 2013
Subsequent Event
Second Amendment
May 14, 2013
Subsequent Event
Second Amendment
Scenario 1
May 14, 2013
Subsequent Event
Second Amendment
Scenario 1
Minimum
May 14, 2013
Subsequent Event
Second Amendment
Scenario 2
May 14, 2013
Subsequent Event
Second Amendment
Scenario 2
Maximum
Aug. 04, 2013
Federal Funds Effective Rate plus
Aug. 04, 2013
Term Loan
Aug. 04, 2013
Revolving credit facility
Aug. 04, 2013
Letter of credit sub-facility
Aug. 04, 2013
Sub-facility
Aug. 04, 2013
Swingline sub-facility
Line of Credit Facility [Line Items]                                  
Senior secured credit facility                         $ 150,000 $ 50,000 $ 20,000 $ 1,000 $ 5,000
Maturity Date           Jun. 01, 2018             Jun. 01, 2016 Jun. 01, 2015      
Proceeds from term loan facility 148,500                                
Debt issuance discount cost 1,500                                
Letters of credit outstanding 5,670                                
Credit facility, current borrowing                         145,125 0      
Credit facility, current borrowing, net of discount                         144,452        
Interest Rate                         4.50%        
Senior secured credit facility, variable interest rate and interest rate in addition to base rate     2.50%   4.50%             0.50%          
Letters of credit issued, minimum 12,000                                
Letters of credit outstanding, maximum 12,000                                
Reduction in term loan margin               0.75%   0.25%              
Leverage ratio       400.00% 400.00%       275.00%   275.00%            
Reduction in LIBOR floor rate             0.25%                    
Fixed charge coverage ratio   115.00% 115.00%                            
Required fixed charge coverage ratio   130.00%                              
Required leverage ratio       325.00%                          
Number of creditors for senior secured credit facility 24                                
Percentage of term loan held by Oak Hill Advisors, L.P. 9.97%                                
Term loan held by Oak Hill Advisors, L.P. 14,469                                
Interest Rate           11.00%                      
Frequency of interest payments - Senior Notes           Semi-annually                      
Redemption price of notes as percentage of principal amount   100.00%   105.50%                          
Redemption date of notes Jun. 01, 2014                                
Senior notes 200,000                                
Senior notes fair value $ 219,500                                
Consolidated coverage ratio 2.00