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Variable Interest Entities (Amounts Included in Condensed Consolidated Balance Sheets as a Result of consolidation of SRV) (Details) - USD ($)
$ in Thousands
Jan. 31, 2016
Feb. 01, 2015
Feb. 02, 2014
Feb. 03, 2013
Variable Interest Entity [Line Items]        
Cash $ 37,873 $ 7,881 $ 7,500 $ 242
Other receivables 76 74    
Property and equipment, net 21,529 16,880    
Other assets, net 299 316    
Total assets 120,620 70,949    
Noncontrolling interest in VIE 1,681 1,480    
Total liabilities and shareholders' equity 120,620 70,949    
SRV [Member]        
Variable Interest Entity [Line Items]        
Cash 92 61    
Other receivables 9 6    
Property and equipment, net 2,823 2,852    
Other assets, net 11 2    
Total assets 2,935 2,921    
Line of credit   600    
Other current liabilities 527 24    
Long-term debt 727 817    
Noncontrolling interest in VIE 1,681 1,480    
Total liabilities and shareholders' equity $ 2,935 $ 2,921