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Reportable Segment Information - (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Aug. 01, 2015
Aug. 02, 2014
Aug. 01, 2015
Aug. 02, 2014
Jan. 31, 2015
Segment Reporting Information [Line Items]          
Total revenues $ 251,269 $ 246,058 $ 535,168 $ 530,791  
Depreciation 5,554 5,424 10,928 10,875  
Interest and other income 834 1,099 1,402 1,841  
Total Assets 623,404 580,111 623,404 580,111 $ 608,278
Capital expenditures 6,823 9,851 11,402 13,967  
Income Before Taxes 24,955 24,764 72,944 72,937  
ReportableSegmentsMemberRetail [Member]          
Segment Reporting Information [Line Items]          
Total revenues 249,919 244,622 532,412 527,879  
Depreciation 5,541 5,412 10,903 10,850  
Interest and other income 834 1,099 1,402 1,841  
Total Assets 554,375 513,174 554,375 513,174  
Capital expenditures 6,823 9,851 11,402 13,967  
Income Before Taxes 24,479 24,188 71,997 71,879  
ReportableSegmentsMemberCredit [Member]          
Segment Reporting Information [Line Items]          
Total revenues 1,350 1,436 2,756 2,912  
Depreciation 13 12 25 25  
Interest and other income 0 0 0 0  
Total Assets 69,029 66,937 69,029 66,937  
Capital expenditures 0 0 0 0  
Income Before Taxes $ 476 $ 576 $ 947 $ 1,058