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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
Nov. 01, 2015
Feb. 01, 2015
Nov. 02, 2014
Feb. 02, 2014
Variable Interest Entity [Line Items]        
Cash $ 209 $ 7,881 $ 352 $ 7,500
Other receivables 576 74    
Property and equipment, net 21,554 16,880    
Other assets, net 329 316    
Total assets 103,225 70,949    
Noncontrolling interest in VIE 1,723 1,480    
Total liabilities and shareholders' equity 103,225 70,949    
Variable Interest Entity, Primary Beneficiary [Member] | SRV [Member]        
Variable Interest Entity [Line Items]        
Cash 144 61    
Other receivables 8 6    
Property and equipment, net 2,841 2,852    
Other assets, net 12 2    
Total assets 3,005 2,921    
Line of credit   600    
Other current liabilities 546 24    
Long-term debt 736 817    
Noncontrolling interest in VIE 1,723 1,480    
Total liabilities and shareholders' equity $ 3,005 $ 2,921