RESTRUCTURING ACTIVITIES AND ASSET IMPAIRMENTS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended			12 Months Ended
	Jan. 27, 2018	Jan. 28, 2017	Jul. 28, 2018	Jan. 27, 2018	Jan. 28, 2017	Jul. 29, 2017
Restructuring Costs Recorded in Fiscal 2016
Restructuring and asset impairment				$ 3,370	$ 0
Goodwill impairment				7,872	0
Restructuring Costs [Abstract]
Restructuring and asset impairment expenses	$ 11,242	$ 0		11,242	$ 0
2017 Cost Saving and Efficiency Initiatives [Member]
Restructuring Cost Liability as of January 27, 2018
Restructuring Charges						$ 6,864
Payments for Restructuring				(5,686)
Restructuring Reserve	1,178			1,178
Restructuring Reserve, Accrual Adjustment	182
Earth Origins Market [Member]
Restructuring Costs Recorded in Fiscal 2016
Restructuring and asset impairment	3,300
Restructuring Costs [Abstract]
Restructuring and asset impairment expenses	11,400
Restructuring Cost Liability as of January 27, 2018
Restructuring Charges	200
Employee Severance [Member] | 2017 Cost Saving and Efficiency Initiatives [Member]
Restructuring Cost Liability as of January 27, 2018
Restructuring Charges						6,606
Payments for Restructuring				(5,428)
Restructuring Reserve	1,178			1,178
Facility Closing [Member] | 2017 Cost Saving and Efficiency Initiatives [Member]
Restructuring Cost Liability as of January 27, 2018
Restructuring Charges						$ 258
Payments for Restructuring				(258)
Restructuring Reserve	$ 0			$ 0
Maximum
Restructuring Cost Liability as of January 27, 2018
Restructuring Charges			$ 2,600