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INTEREST INCOME (EXPENSE), NET (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jul. 30, 2016
Aug. 01, 2015
Jul. 30, 2016
Aug. 01, 2015
Components of interest income (expense), net        
Interest income $ 364 $ 264 $ 681 $ 518
Less:        
Interest expense - credit facilities 15 18 29 39
Unused line fee 117 91 252 196
Amortization of deferred financing costs 68 88 136 176
Other interest and fees 42 0 48 20
Total interest expense 540 469 931 899
Interest (expense), net (176) (205) (250) (381)
interestrevolvingloan [Member]        
Less:        
Interest expense - credit facilities $ 298 $ 272 $ 466 $ 468