Recent Accounting Pronouncements (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
May 04, 2019
May 05, 2018
Feb. 02, 2019
Adoption of ASU Consolidated Balance Sheet [Abstract]      
Right-of-use assets $ 224,870   $ 0
Lease liabilities 255,107    
Impairment of ROU 1,100    
Inventories, net 248,548   280,287
Other current assets 12,995   16,343
Accounts payable 105,834   107,315
Other accrued expenses 15,604   10,174
Net sales 343,295 $ 274,707  
Cost of goods sold 224,692 177,934  
Gross margin 118,603 96,773  
Store operating, selling and administrative expenses 74,038 61,904  
Income/(Loss) before provision for income taxes 37,296 28,564  
Provision for income taxes 9,439 7,055  
Net income (loss) $ 27,857 $ 21,509  
Diluted earnings/(loss) per share (in dollars per share) $ 1.50 $ 1.12  
Accounting Standards Update 2016-02 [Member]      
Adoption of ASU Consolidated Balance Sheet [Abstract]      
Right-of-use assets     234,000
Lease liabilities     265,600
Cumulative effect adjustment to opening retained earnings     2,080
Liability for unfavorable leases     2,000
Deferred rent     25,400
Impairment of ROU     $ 3,400