BENEFIT PLANS, (Net periodic benefit cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Components of net periodic benefit cost [Abstract]
Employer service cost	$ 340	$ 350	$ 210
Interest cost	1,598	1,566	1,692
Expected return on plan assets	(1,749)	(2,195)	(2,134)
Net loss amortization	897	774	399
Loss on pension settlement	0	748	0
Net pension cost	$ 1,086	$ 1,243	$ 167