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RESTRUCTURING ACTIVITIES AND ASSET IMPAIRMENTS (Details) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Jul. 28, 2018	Apr. 28, 2018	Jan. 27, 2018	Apr. 29, 2017	Apr. 28, 2018	Apr. 29, 2017	Jul. 29, 2017
Restructuring Costs Recorded in Fiscal 2016
Restructuring and asset impairment					$ 3,370	$ 711
Goodwill impairment					7,872	0
Restructuring Costs [Abstract]
Restructuring and asset impairment expenses		$ 151		$ 3,946	11,393	$ 3,946
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
2017 Cost Saving and Efficiency Initiatives [Member]
Restructuring Cost Liability as of April 28, 2018
Restructuring Charges							$ 6,864
Payments for Restructuring					(5,988)
Restructuring Reserve		876			876
Restructuring Reserve, Accrual Adjustment		151	$ (182)
Employee Severance [Member] | 2017 Cost Saving and Efficiency Initiatives [Member]
Restructuring Cost Liability as of April 28, 2018
Restructuring Charges							6,606
Payments for Restructuring					(5,730)
Restructuring Reserve		876			876
Employee Severance [Member] | Earth Origins Market
Restructuring Cost Liability as of April 28, 2018
Restructuring Charges					245
Payments for Restructuring					(17)
Restructuring Reserve		228			228
Facility Closing [Member] | 2017 Cost Saving and Efficiency Initiatives [Member]
Restructuring Cost Liability as of April 28, 2018
Restructuring Charges							$ 258
Payments for Restructuring					(258)
Restructuring Reserve		$ 0			$ 0
Maximum
Restructuring Cost Liability as of April 28, 2018
Restructuring Charges	$ 1,400

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