PENSION PLANS - Additional Information (Details) $ in Thousands	6 Months Ended		12 Months Ended
	Jan. 27, 2018 USD ($) pension_plan	Jan. 28, 2017 USD ($)	Jul. 28, 2018 USD ($)
Defined Benefit Plan, Contributions by Employer	$ 510
Defined Benefit Plan, Actuarial Gain (Loss)		$ 629
Number of defined benefit pension plans | pension_plan	4
Scenario, Forecast [Member]
Estimated future employer contributions in current fiscal year			$ 3,500