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Financing Transactions, Line of Credit and Note Payable (Financing Transactions/Term Loan Facility) (Detail) (USD $)
1 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 6 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Jul. 24, 2012
May 16, 2012
Oct. 13, 2010
May 04, 2013
Jul. 28, 2012
Apr. 28, 2012
Feb. 02, 2013
Jan. 28, 2012
Jan. 29, 2011
Oct. 26, 2012
Term Loan Facility [Member]
Jul. 27, 2012
Term Loan Facility [Member]
May 16, 2012
Term Loan Facility [Member]
Feb. 02, 2013
Term Loan Facility [Member]
May 04, 2013
Term Loan Facility [Member]
Jan. 28, 2012
Term Loan Facility [Member]
May 31, 2013
Term Loan Facility [Member]
Subsequent Event [Member]
Aug. 03, 2013
Term Loan Facility [Member]
Subsequent Event [Member]
May 04, 2013
Term Loan Facility [Member]
Secured Debt [Member]
Feb. 02, 2013
Term Loan Facility [Member]
Secured Debt [Member]
May 04, 2013
Term Loan Facility [Member]
Federal Funds Effective Rate Plus [Member]
Feb. 02, 2013
Term Loan Facility [Member]
Federal Funds Effective Rate Plus [Member]
May 04, 2013
Term Loan Facility [Member]
Federal Funds Effective Rate Plus Margin [Member]
Feb. 02, 2013
Term Loan Facility [Member]
Federal Funds Effective Rate Plus Margin [Member]
May 04, 2013
Term Loan Facility [Member]
LIBOR-Based Rate [Member]
Feb. 02, 2013
Term Loan Facility [Member]
LIBOR-Based Rate [Member]
May 04, 2013
Term Loan Facility [Member]
Libor Plus Margin [Member]
Feb. 02, 2013
Term Loan Facility [Member]
Libor Plus Margin [Member]
Feb. 02, 2013
2012 Term Loans [Member]
May 04, 2013
2013 Term Loan [Member]
Feb. 02, 2013
2013 Term Loan [Member]
May 04, 2013
2014 Term Loan [Member]
Feb. 02, 2013
2014 Term Loan [Member]
May 04, 2013
After 2014 Term Loan [Member]
Feb. 02, 2013
After 2014 Term Loan [Member]
Debt Instrument [Line Items]                                                                    
Borrowing under term loan facility                       $ 100,000,000                                            
Convertible preferred stock, dividends   99,500,000 196,700,000       99,451,000   192,417,000     99,500,000                                            
Effective interest rate (percent)                                       0.50% 0.50% 3.25% 3.25% 1.00% 1.00% 4.25% 4.25%              
Interest rate (percent)                         2.00% 2.00%       5.25% 5.25%                              
Cash and cash equivalents                         10,000,000 10,000,000                                        
Consolidated leverage ratio, maximum                                                       3.25 2.75 2.75        
Consolidated leverage ratio, minimum                                                         2.50 2.50        
Leverage ratio on credit facility                                                             2.00 2.00 1.75 1.75
Term loan facility subject to repayment                     50,000,000   50,000,000                                          
Repayment of Term Loan Facility 65,300,000       65,300,000   65,500,000 0 0 300,000 65,300,000                                              
Interest expense 700,000           2,400,000       700,000             500,000                                
Term loan facility outstanding amount                                   34,500,000 34,500,000                              
Debt, current                         15,000,000                                          
Deferred financing costs                       2,700,000 800,000   38,000                                      
Write off of deferred debt issuance cost                     1,600,000   1,600,000       300,000                                  
Amortization of deferred financing costs       78,000   7,000 455,000 28,000 28,000       455,000                                          
Repayments of debt                               $ 15,000,000