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Revenue Recognition (Tables)
 3 Months Ended
Apr. 30, 2018
Revenue Recognition [Abstract]  
Schedule of impact of adopting ASC 606 on Condensed Consolidated Balance Sheet
    April 30, 2018
(In thousands)		  
    As Reported     Without Adoption of
ASC 606		     Impact of Adoption of
ASC 606		  
Assets                        
Accounts receivable, net   $ 429,146       282,902       146,244  
Inventories     463,463       502,819       (39,356 )
Prepaid expenses and other current assets     102,072       62,859       39,213  
Deferred income tax assets, net     27,982       11,438       16,544  
                         
Liabilities                        
Accrued expenses   $ 86,058       82,648       3,410  
Customer refund liabilities     214,693       -       214,693  
                         
Equity                        
Retained earnings     630,633       686,091       (55,458 )
Schedule of impact of adopting ASC 606 on Condensed Consolidated Statements of Income (Loss) and Comprehensive Income (Loss)
    For the three months ended April 30, 2018
(In thousands)		  
    As Reported     Without Adoption of
ASC 606		     Impact of Adoption of
ASC 606		  
Net sales   $ 611,743       619,341       (7,598 )
Cost of goods sold     377,216       376,163       1,053
Selling general and administrative expenses     202,071       208,723       (6,652 )
Income tax expense     3,120       3,389       (269 )
Net income     9,885       11,615       (1,730 )
                         
Earnings per share                        
Basic     0.20       0.24       (0.04 )
Diluted     0.20       0.23       (0.03 )