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OTHER COMMITMENTS AND CONTINGENCIES (Details 3) - USD ($)
$ in Thousands
12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Commitments and Contingencies Disclosure [Abstract]      
Service cost $ 40 $ 46 $ 25
Interest cost 21 19 17
Amortization of prior service cost (13) (13) (13)
Amortization of unrecognized prior service costs (56) (51) (66)
Net periodic postretirement benefit cost $ (8) $ 1 $ (37)